Merge tags 'acpi-6.2-rc1' and 'irq-core-2022-12-10' into loongarch-next

LoongArch architecture changes for 6.2 depend on the acpi and irqchip changes to work, so merge them to create a base.
2026-05-05 13:29:17 -04:00 · 2022-12-13 19:19:41 +08:00
parent 830b3c68c1 bee74dcbd3 6132a490f9
commit 1a34e7f2fc
192 changed files with 4694 additions and 2305 deletions
--- a/Documentation/PCI/msi-howto.rst
+++ b/Documentation/PCI/msi-howto.rst
@@ -285,3 +285,13 @@ to bridges between the PCI root and the device, MSIs are disabled.
 It is also worth checking the device driver to see whether it supports MSIs.
 For example, it may contain calls to pci_alloc_irq_vectors() with the
 PCI_IRQ_MSI or PCI_IRQ_MSIX flags.
+
+
+List of device drivers MSI(-X) APIs
+===================================
+
+The PCI/MSI subystem has a dedicated C file for its exported device driver
+APIs — `drivers/pci/msi/api.c`. The following functions are exported:
+
+.. kernel-doc:: drivers/pci/msi/api.c
+   :export:
--- a/Documentation/devicetree/bindings/interrupt-controller/loongarch,cpu-interrupt-controller.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/loongarch,cpu-interrupt-controller.yaml
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/loongarch,cpu-interrupt-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LoongArch CPU Interrupt Controller
+
+maintainers:
+  - Liu Peibao <liupeibao@loongson.cn>
+
+properties:
+  compatible:
+    const: loongarch,cpu-interrupt-controller
+
+  '#interrupt-cells':
+    const: 1
+
+  interrupt-controller: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - '#interrupt-cells'
+  - interrupt-controller
+
+examples:
+  - |
+    interrupt-controller {
+      compatible = "loongarch,cpu-interrupt-controller";
+      #interrupt-cells = <1>;
+      interrupt-controller;
+    };
--- a/Documentation/devicetree/bindings/interrupt-controller/mediatek,cirq.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/mediatek,cirq.txt
@@ -1,33 +0,0 @@
-* Mediatek 27xx cirq
-
-In Mediatek SOCs, the CIRQ is a low power interrupt controller designed to
-work outside MCUSYS which comprises with Cortex-Ax cores,CCI and GIC.
-The external interrupts (outside MCUSYS) will feed through CIRQ and connect
-to GIC in MCUSYS. When CIRQ is enabled, it will record the edge-sensitive
-interrupts and generate a pulse signal to parent interrupt controller when
-flush command is executed. With CIRQ, MCUSYS can be completely turned off
-to improve the system power consumption without losing interrupts.
-
-Required properties:
- compatible: should be one of
-  - "mediatek,mt2701-cirq" for mt2701 CIRQ
-  - "mediatek,mt8135-cirq" for mt8135 CIRQ
-  - "mediatek,mt8173-cirq" for mt8173 CIRQ
-  and "mediatek,cirq" as a fallback.
- interrupt-controller : Identifies the node as an interrupt controller.
- #interrupt-cells : Use the same format as specified by GIC in arm,gic.txt.
- reg: Physical base address of the cirq registers and length of memory
-  mapped region.
- mediatek,ext-irq-range: Identifies external irq number range in different
-  SOCs.
-
-Example:
-	cirq: interrupt-controller@10204000 {
-		compatible = "mediatek,mt2701-cirq",
-			     "mediatek,mtk-cirq";
-		interrupt-controller;
-		#interrupt-cells = <3>;
-		interrupt-parent = <&sysirq>;
-		reg = <0 0x10204000 0 0x400>;
-		mediatek,ext-irq-start = <32 200>;
-	};
--- a/Documentation/devicetree/bindings/interrupt-controller/mediatek,mtk-cirq.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/mediatek,mtk-cirq.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/mediatek,mtk-cirq.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek System Interrupt Controller
+
+maintainers:
+  - Youlin Pei <youlin.pei@mediatek.com>
+
+description:
+  In MediaTek SoCs, the CIRQ is a low power interrupt controller designed to
+  work outside of MCUSYS which comprises with Cortex-Ax cores, CCI and GIC.
+  The external interrupts (outside MCUSYS) will feed through CIRQ and connect
+  to GIC in MCUSYS. When CIRQ is enabled, it will record the edge-sensitive
+  interrupts and generate a pulse signal to parent interrupt controller when
+  flush command is executed. With CIRQ, MCUSYS can be completely turned off
+  to improve the system power consumption without losing interrupts.
+
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - mediatek,mt2701-cirq
+          - mediatek,mt8135-cirq
+          - mediatek,mt8173-cirq
+          - mediatek,mt8192-cirq
+      - const: mediatek,mtk-cirq
+
+  reg:
+    maxItems: 1
+
+  '#interrupt-cells':
+    const: 3
+
+  interrupt-controller: true
+
+  mediatek,ext-irq-range:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      - description: First CIRQ interrupt
+      - description: Last CIRQ interrupt
+    description:
+      Identifies the range of external interrupts in different SoCs
+
+required:
+  - compatible
+  - reg
+  - '#interrupt-cells'
+  - interrupt-controller
+  - mediatek,ext-irq-range
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    cirq: interrupt-controller@10204000 {
+        compatible = "mediatek,mt2701-cirq", "mediatek,mtk-cirq";
+        reg = <0x10204000 0x400>;
+        #interrupt-cells = <3>;
+        interrupt-controller;
+        interrupt-parent = <&sysirq>;
+        mediatek,ext-irq-range = <32 200>;
+    };
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -13,6 +13,7 @@
 #define pr_fmt(fmt) "ACPI: " fmt

 #include <linux/acpi.h>
+#include <linux/arm-smccc.h>
 #include <linux/cpumask.h>
 #include <linux/efi.h>
 #include <linux/efi-bgrt.h>
@@ -411,3 +412,108 @@ void arch_reserve_mem_area(acpi_physical_address addr, size_t size)
 {
 	memblock_mark_nomap(addr, size);
 }
+
+#ifdef CONFIG_ACPI_FFH
+/*
+ * Implements ARM64 specific callbacks to support ACPI FFH Operation Region as
+ * specified in https://developer.arm.com/docs/den0048/latest
+ */
+struct acpi_ffh_data {
+	struct acpi_ffh_info info;
+	void (*invoke_ffh_fn)(unsigned long a0, unsigned long a1,
+			      unsigned long a2, unsigned long a3,
+			      unsigned long a4, unsigned long a5,
+			      unsigned long a6, unsigned long a7,
+			      struct arm_smccc_res *args,
+			      struct arm_smccc_quirk *res);
+	void (*invoke_ffh64_fn)(const struct arm_smccc_1_2_regs *args,
+				struct arm_smccc_1_2_regs *res);
+};
+
+int acpi_ffh_address_space_arch_setup(void *handler_ctxt, void **region_ctxt)
+{
+	enum arm_smccc_conduit conduit;
+	struct acpi_ffh_data *ffh_ctxt;
+
+	ffh_ctxt = kzalloc(sizeof(*ffh_ctxt), GFP_KERNEL);
+	if (!ffh_ctxt)
+		return -ENOMEM;
+
+	if (arm_smccc_get_version() < ARM_SMCCC_VERSION_1_2)
+		return -EOPNOTSUPP;
+
+	conduit = arm_smccc_1_1_get_conduit();
+	if (conduit == SMCCC_CONDUIT_NONE) {
+		pr_err("%s: invalid SMCCC conduit\n", __func__);
+		return -EOPNOTSUPP;
+	}
+
+	if (conduit == SMCCC_CONDUIT_SMC) {
+		ffh_ctxt->invoke_ffh_fn = __arm_smccc_smc;
+		ffh_ctxt->invoke_ffh64_fn = arm_smccc_1_2_smc;
+	} else {
+		ffh_ctxt->invoke_ffh_fn = __arm_smccc_hvc;
+		ffh_ctxt->invoke_ffh64_fn = arm_smccc_1_2_hvc;
+	}
+
+	memcpy(ffh_ctxt, handler_ctxt, sizeof(ffh_ctxt->info));
+
+	*region_ctxt = ffh_ctxt;
+	return AE_OK;
+}
+
+static bool acpi_ffh_smccc_owner_allowed(u32 fid)
+{
+	int owner = ARM_SMCCC_OWNER_NUM(fid);
+
+	if (owner == ARM_SMCCC_OWNER_STANDARD ||
+	    owner == ARM_SMCCC_OWNER_SIP || owner == ARM_SMCCC_OWNER_OEM)
+		return true;
+
+	return false;
+}
+
+int acpi_ffh_address_space_arch_handler(acpi_integer *value, void *region_context)
+{
+	int ret = 0;
+	struct acpi_ffh_data *ffh_ctxt = region_context;
+
+	if (ffh_ctxt->info.offset == 0) {
+		/* SMC/HVC 32bit call */
+		struct arm_smccc_res res;
+		u32 a[8] = { 0 }, *ptr = (u32 *)value;
+
+		if (!ARM_SMCCC_IS_FAST_CALL(*ptr) || ARM_SMCCC_IS_64(*ptr) ||
+		    !acpi_ffh_smccc_owner_allowed(*ptr) ||
+		    ffh_ctxt->info.length > 32) {
+			ret = AE_ERROR;
+		} else {
+			int idx, len = ffh_ctxt->info.length >> 2;
+
+			for (idx = 0; idx < len; idx++)
+				a[idx] = *(ptr + idx);
+
+			ffh_ctxt->invoke_ffh_fn(a[0], a[1], a[2], a[3], a[4],
+						a[5], a[6], a[7], &res, NULL);
+			memcpy(value, &res, sizeof(res));
+		}
+
+	} else if (ffh_ctxt->info.offset == 1) {
+		/* SMC/HVC 64bit call */
+		struct arm_smccc_1_2_regs *r = (struct arm_smccc_1_2_regs *)value;
+
+		if (!ARM_SMCCC_IS_FAST_CALL(r->a0) || !ARM_SMCCC_IS_64(r->a0) ||
+		    !acpi_ffh_smccc_owner_allowed(r->a0) ||
+		    ffh_ctxt->info.length > sizeof(*r)) {
+			ret = AE_ERROR;
+		} else {
+			ffh_ctxt->invoke_ffh64_fn(r, r);
+			memcpy(value, r, ffh_ctxt->info.length);
+		}
+	} else {
+		ret = AE_ERROR;
+	}
+
+	return ret;
+}
+#endif /* CONFIG_ACPI_FFH */
--- a/arch/ia64/hp/common/aml_nfw.c
+++ b/arch/ia64/hp/common/aml_nfw.c
@@ -187,9 +187,9 @@ static int aml_nfw_add(struct acpi_device *device)
 	return aml_nfw_add_global_handler();
 }

-static int aml_nfw_remove(struct acpi_device *device)
+static void aml_nfw_remove(struct acpi_device *device)
 {
-	return aml_nfw_remove_global_handler();
+	aml_nfw_remove_global_handler();
 }

 static const struct acpi_device_id aml_nfw_ids[] = {
--- a/arch/loongarch/include/asm/acpi.h
+++ b/arch/loongarch/include/asm/acpi.h
@@ -31,148 +31,6 @@ static inline bool acpi_has_cpu_in_madt(void)

 extern struct list_head acpi_wakeup_device_list;

-/*
- * Temporary definitions until the core ACPICA code gets updated (see
- * 1656837932-18257-1-git-send-email-lvjianmin@loongson.cn and its
- * follow-ups for the "rationale").
- *
- * Once the "legal reasons" are cleared and that the code is merged,
- * this can be dropped entierely.
- */
-#if (ACPI_CA_VERSION == 0x20220331 && !defined(LOONGARCH_ACPICA_EXT))
-
-#define LOONGARCH_ACPICA_EXT	1
-
-#define	ACPI_MADT_TYPE_CORE_PIC		17
-#define	ACPI_MADT_TYPE_LIO_PIC		18
-#define	ACPI_MADT_TYPE_HT_PIC		19
-#define	ACPI_MADT_TYPE_EIO_PIC		20
-#define	ACPI_MADT_TYPE_MSI_PIC		21
-#define	ACPI_MADT_TYPE_BIO_PIC		22
-#define	ACPI_MADT_TYPE_LPC_PIC		23
-
-/* Values for Version field above */
-
-enum acpi_madt_core_pic_version {
-	ACPI_MADT_CORE_PIC_VERSION_NONE = 0,
-	ACPI_MADT_CORE_PIC_VERSION_V1 = 1,
-	ACPI_MADT_CORE_PIC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
-};
-
-enum acpi_madt_lio_pic_version {
-	ACPI_MADT_LIO_PIC_VERSION_NONE = 0,
-	ACPI_MADT_LIO_PIC_VERSION_V1 = 1,
-	ACPI_MADT_LIO_PIC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
-};
-
-enum acpi_madt_eio_pic_version {
-	ACPI_MADT_EIO_PIC_VERSION_NONE = 0,
-	ACPI_MADT_EIO_PIC_VERSION_V1 = 1,
-	ACPI_MADT_EIO_PIC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
-};
-
-enum acpi_madt_ht_pic_version {
-	ACPI_MADT_HT_PIC_VERSION_NONE = 0,
-	ACPI_MADT_HT_PIC_VERSION_V1 = 1,
-	ACPI_MADT_HT_PIC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
-};
-
-enum acpi_madt_bio_pic_version {
-	ACPI_MADT_BIO_PIC_VERSION_NONE = 0,
-	ACPI_MADT_BIO_PIC_VERSION_V1 = 1,
-	ACPI_MADT_BIO_PIC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
-};
-
-enum acpi_madt_msi_pic_version {
-	ACPI_MADT_MSI_PIC_VERSION_NONE = 0,
-	ACPI_MADT_MSI_PIC_VERSION_V1 = 1,
-	ACPI_MADT_MSI_PIC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
-};
-
-enum acpi_madt_lpc_pic_version {
-	ACPI_MADT_LPC_PIC_VERSION_NONE = 0,
-	ACPI_MADT_LPC_PIC_VERSION_V1 = 1,
-	ACPI_MADT_LPC_PIC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
-};
-
-#pragma pack(1)
-
-/* Core Interrupt Controller */
-
-struct acpi_madt_core_pic {
-	struct acpi_subtable_header header;
-	u8 version;
-	u32 processor_id;
-	u32 core_id;
-	u32 flags;
-};
-
-/* Legacy I/O Interrupt Controller */
-
-struct acpi_madt_lio_pic {
-	struct acpi_subtable_header header;
-	u8 version;
-	u64 address;
-	u16 size;
-	u8 cascade[2];
-	u32 cascade_map[2];
-};
-
-/* Extend I/O Interrupt Controller */
-
-struct acpi_madt_eio_pic {
-	struct acpi_subtable_header header;
-	u8 version;
-	u8 cascade;
-	u8 node;
-	u64 node_map;
-};
-
-/* HT Interrupt Controller */
-
-struct acpi_madt_ht_pic {
-	struct acpi_subtable_header header;
-	u8 version;
-	u64 address;
-	u16 size;
-	u8 cascade[8];
-};
-
-/* Bridge I/O Interrupt Controller */
-
-struct acpi_madt_bio_pic {
-	struct acpi_subtable_header header;
-	u8 version;
-	u64 address;
-	u16 size;
-	u16 id;
-	u16 gsi_base;
-};
-
-/* MSI Interrupt Controller */
-
-struct acpi_madt_msi_pic {
-	struct acpi_subtable_header header;
-	u8 version;
-	u64 msg_address;
-	u32 start;
-	u32 count;
-};
-
-/* LPC Interrupt Controller */
-
-struct acpi_madt_lpc_pic {
-	struct acpi_subtable_header header;
-	u8 version;
-	u64 address;
-	u16 size;
-	u8 cascade;
-};
-
-#pragma pack()
-
-#endif
-
 #endif /* !CONFIG_ACPI */

 #define ACPI_TABLE_UPGRADE_MAX_PHYS ARCH_LOW_ADDRESS_LIMIT
--- a/arch/loongarch/include/asm/irq.h
+++ b/arch/loongarch/include/asm/irq.h
@@ -93,7 +93,7 @@ int liointc_acpi_init(struct irq_domain *parent,
 int eiointc_acpi_init(struct irq_domain *parent,
 					struct acpi_madt_eio_pic *acpi_eiointc);

-struct irq_domain *htvec_acpi_init(struct irq_domain *parent,
+int htvec_acpi_init(struct irq_domain *parent,
 					struct acpi_madt_ht_pic *acpi_htvec);
 int pch_lpc_acpi_init(struct irq_domain *parent,
 					struct acpi_madt_lpc_pic *acpi_pchlpc);
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -447,21 +447,18 @@ static void pseries_msi_ops_msi_free(struct irq_domain *domain,
 * RTAS can not disable one MSI at a time. It's all or nothing. Do it
 * at the end after all IRQs have been freed.
 */
-static void pseries_msi_domain_free_irqs(struct irq_domain *domain,
-					 struct device *dev)
+static void pseries_msi_post_free(struct irq_domain *domain, struct device *dev)
 {
 	if (WARN_ON_ONCE(!dev_is_pci(dev)))
 		return;

-	__msi_domain_free_irqs(domain, dev);
-
 	rtas_disable_msi(to_pci_dev(dev));
 }

 static struct msi_domain_ops pseries_pci_msi_domain_ops = {
 	.msi_prepare	= pseries_msi_ops_prepare,
 	.msi_free	= pseries_msi_ops_msi_free,
-	.domain_free_irqs = pseries_msi_domain_free_irqs,
+	.msi_post_free	= pseries_msi_post_free,
 };

 static void pseries_msi_shutdown(struct irq_data *d)
--- a/arch/um/drivers/Kconfig
+++ b/arch/um/drivers/Kconfig
@@ -381,7 +381,6 @@ config UML_PCI_OVER_VIRTIO
 	select UML_IOMEM_EMULATION
 	select UML_DMA_EMULATION
 	select PCI_MSI
-	select PCI_MSI_IRQ_DOMAIN
 	select PCI_LOCKLESS_CONFIG

 config UML_PCI_OVER_VIRTIO_DEVICE_ID
--- a/arch/um/include/asm/pci.h
+++ b/arch/um/include/asm/pci.h
@@ -7,7 +7,7 @@
 /* Generic PCI */
 #include <asm-generic/pci.h>

-#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
+#ifdef CONFIG_PCI_MSI
 /*
 * This is a bit of an annoying hack, and it assumes we only have
 * the virt-pci (if anything). Which is true, but still.
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1109,7 +1109,6 @@ config X86_LOCAL_APIC
 	def_bool y
 	depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_APIC || PCI_MSI
 	select IRQ_DOMAIN_HIERARCHY
-	select PCI_MSI_IRQ_DOMAIN if PCI_MSI

 config X86_IO_APIC
 	def_bool y
--- a/arch/x86/include/asm/hyperv_timer.h
+++ b/arch/x86/include/asm/hyperv_timer.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_HYPERV_TIMER_H
+#define _ASM_X86_HYPERV_TIMER_H
+
+#include <asm/msr.h>
+
+#define hv_get_raw_timer() rdtsc_ordered()
+
+#endif
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -44,10 +44,6 @@ extern int irq_remapping_reenable(int);
 extern int irq_remap_enable_fault_handling(void);
 extern void panic_if_irq_remap(const char *msg);

-/* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */
-extern struct irq_domain *
-arch_create_remap_msi_irq_domain(struct irq_domain *par, const char *n, int id);
-
 /* Get parent irqdomain for interrupt remapping irqdomain */
 static inline struct irq_domain *arch_get_ir_parent_domain(void)
 {
--- a/arch/x86/include/asm/irqdomain.h
+++ b/arch/x86/include/asm/irqdomain.h
@@ -7,9 +7,7 @@

 #ifdef CONFIG_X86_LOCAL_APIC
 enum {
-	/* Allocate contiguous CPU vectors */
-	X86_IRQ_ALLOC_CONTIGUOUS_VECTORS		= 0x1,
-	X86_IRQ_ALLOC_LEGACY				= 0x2,
+	X86_IRQ_ALLOC_LEGACY				= 0x1,
 };

 extern int x86_fwspec_is_ioapic(struct irq_fwspec *fwspec);
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -19,8 +19,6 @@ typedef int (*hyperv_fill_flush_list_func)(
 		struct hv_guest_mapping_flush_list *flush,
 		void *data);

-#define hv_get_raw_timer() rdtsc_ordered()
-
 void hyperv_vector_handler(struct pt_regs *regs);

 #if IS_ENABLED(CONFIG_HYPERV)
--- a/arch/x86/include/asm/msi.h
+++ b/arch/x86/include/asm/msi.h
@@ -62,4 +62,10 @@ typedef struct x86_msi_addr_hi {
 struct msi_msg;
 u32 x86_msi_msg_get_destid(struct msi_msg *msg, bool extid);

+#define X86_VECTOR_MSI_FLAGS_SUPPORTED					\
+	(MSI_GENERIC_FLAGS_MASK | MSI_FLAG_PCI_MSIX | MSI_FLAG_PCI_MSIX_ALLOC_DYN)
+
+#define X86_VECTOR_MSI_FLAGS_REQUIRED					\
+	(MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS)
+
 #endif /* _ASM_X86_MSI_H */
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -21,7 +21,7 @@ struct pci_sysdata {
 #ifdef CONFIG_X86_64
 	void		*iommu;		/* IOMMU private data */
 #endif
-#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
+#ifdef CONFIG_PCI_MSI
 	void		*fwnode;	/* IRQ domain for MSI assignment */
 #endif
 #if IS_ENABLED(CONFIG_VMD)
@@ -52,7 +52,7 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 }
 #endif

-#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
+#ifdef CONFIG_PCI_MSI
 static inline void *_pci_root_bus_fwnode(struct pci_bus *bus)
 {
 	return to_pci_sysdata(bus)->fwnode;
@@ -92,6 +92,7 @@ void pcibios_scan_root(int bus);
 struct irq_routing_table *pcibios_get_irq_routing_table(void);
 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);

+bool pci_dev_has_default_msi_parent_domain(struct pci_dev *dev);

 #define HAVE_PCI_MMAP
 #define arch_can_pci_mmap_wc()	pat_enabled()
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -142,70 +142,139 @@ msi_set_affinity(struct irq_data *irqd, const struct cpumask *mask, bool force)
 	return ret;
 }

-/*
- * IRQ Chip for MSI PCI/PCI-X/PCI-Express Devices,
- * which implement the MSI or MSI-X Capability Structure.
+/**
+ * pci_dev_has_default_msi_parent_domain - Check whether the device has the default
+ *					   MSI parent domain associated
+ * @dev:	Pointer to the PCI device
 */
-static struct irq_chip pci_msi_controller = {
-	.name			= "PCI-MSI",
-	.irq_unmask		= pci_msi_unmask_irq,
-	.irq_mask		= pci_msi_mask_irq,
-	.irq_ack		= irq_chip_ack_parent,
-	.irq_retrigger		= irq_chip_retrigger_hierarchy,
-	.irq_set_affinity	= msi_set_affinity,
-	.flags			= IRQCHIP_SKIP_SET_WAKE |
-				  IRQCHIP_AFFINITY_PRE_STARTUP,
-};
-
-int pci_msi_prepare(struct irq_domain *domain, struct device *dev, int nvec,
-		    msi_alloc_info_t *arg)
+bool pci_dev_has_default_msi_parent_domain(struct pci_dev *dev)
 {
-	init_irq_alloc_info(arg, NULL);
-	if (to_pci_dev(dev)->msix_enabled) {
-		arg->type = X86_IRQ_ALLOC_TYPE_PCI_MSIX;
-	} else {
-		arg->type = X86_IRQ_ALLOC_TYPE_PCI_MSI;
-		arg->flags |= X86_IRQ_ALLOC_CONTIGUOUS_VECTORS;
+	struct irq_domain *domain = dev_get_msi_domain(&dev->dev);
+
+	if (!domain)
+		domain = dev_get_msi_domain(&dev->bus->dev);
+	if (!domain)
+		return false;
+
+	return domain == x86_vector_domain;
+}
+
+/**
+ * x86_msi_prepare - Setup of msi_alloc_info_t for allocations
+ * @domain:	The domain for which this setup happens
+ * @dev:	The device for which interrupts are allocated
+ * @nvec:	The number of vectors to allocate
+ * @alloc:	The allocation info structure to initialize
+ *
+ * This function is to be used for all types of MSI domains above the x86
+ * vector domain and any intermediates. It is always invoked from the
+ * top level interrupt domain. The domain specific allocation
+ * functionality is determined via the @domain's bus token which allows to
+ * map the X86 specific allocation type.
+ */
+static int x86_msi_prepare(struct irq_domain *domain, struct device *dev,
+			   int nvec, msi_alloc_info_t *alloc)
+{
+	struct msi_domain_info *info = domain->host_data;
+
+	init_irq_alloc_info(alloc, NULL);
+
+	switch (info->bus_token) {
+	case DOMAIN_BUS_PCI_DEVICE_MSI:
+		alloc->type = X86_IRQ_ALLOC_TYPE_PCI_MSI;
+		return 0;
+	case DOMAIN_BUS_PCI_DEVICE_MSIX:
+	case DOMAIN_BUS_PCI_DEVICE_IMS:
+		alloc->type = X86_IRQ_ALLOC_TYPE_PCI_MSIX;
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+/**
+ * x86_init_dev_msi_info - Domain info setup for MSI domains
+ * @dev:		The device for which the domain should be created
+ * @domain:		The (root) domain providing this callback
+ * @real_parent:	The real parent domain of the to initialize domain
+ * @info:		The domain info for the to initialize domain
+ *
+ * This function is to be used for all types of MSI domains above the x86
+ * vector domain and any intermediates. The domain specific functionality
+ * is determined via the @real_parent.
+ */
+static bool x86_init_dev_msi_info(struct device *dev, struct irq_domain *domain,
+				  struct irq_domain *real_parent, struct msi_domain_info *info)
+{
+	const struct msi_parent_ops *pops = real_parent->msi_parent_ops;
+
+	/* MSI parent domain specific settings */
+	switch (real_parent->bus_token) {
+	case DOMAIN_BUS_ANY:
+		/* Only the vector domain can have the ANY token */
+		if (WARN_ON_ONCE(domain != real_parent))
+			return false;
+		info->chip->irq_set_affinity = msi_set_affinity;
+		/* See msi_set_affinity() for the gory details */
+		info->flags |= MSI_FLAG_NOMASK_QUIRK;
+		break;
+	case DOMAIN_BUS_DMAR:
+	case DOMAIN_BUS_AMDVI:
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		return false;
 	}

-	return 0;
+	/* Is the target supported? */
+	switch(info->bus_token) {
+	case DOMAIN_BUS_PCI_DEVICE_MSI:
+	case DOMAIN_BUS_PCI_DEVICE_MSIX:
+		break;
+	case DOMAIN_BUS_PCI_DEVICE_IMS:
+		if (!(pops->supported_flags & MSI_FLAG_PCI_IMS))
+			return false;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		return false;
+	}
+
+	/*
+	 * Mask out the domain specific MSI feature flags which are not
+	 * supported by the real parent.
+	 */
+	info->flags			&= pops->supported_flags;
+	/* Enforce the required flags */
+	info->flags			|= X86_VECTOR_MSI_FLAGS_REQUIRED;
+
+	/* This is always invoked from the top level MSI domain! */
+	info->ops->msi_prepare		= x86_msi_prepare;
+
+	info->chip->irq_ack		= irq_chip_ack_parent;
+	info->chip->irq_retrigger	= irq_chip_retrigger_hierarchy;
+	info->chip->flags		|= IRQCHIP_SKIP_SET_WAKE |
+					   IRQCHIP_AFFINITY_PRE_STARTUP;
+
+	info->handler			= handle_edge_irq;
+	info->handler_name		= "edge";
+
+	return true;
 }
-EXPORT_SYMBOL_GPL(pci_msi_prepare);

-static struct msi_domain_ops pci_msi_domain_ops = {
-	.msi_prepare	= pci_msi_prepare,
-};
-
-static struct msi_domain_info pci_msi_domain_info = {
-	.flags		= MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
-			  MSI_FLAG_PCI_MSIX,
-	.ops		= &pci_msi_domain_ops,
-	.chip		= &pci_msi_controller,
-	.handler	= handle_edge_irq,
-	.handler_name	= "edge",
+static const struct msi_parent_ops x86_vector_msi_parent_ops = {
+	.supported_flags	= X86_VECTOR_MSI_FLAGS_SUPPORTED,
+	.init_dev_msi_info	= x86_init_dev_msi_info,
 };

 struct irq_domain * __init native_create_pci_msi_domain(void)
 {
-	struct fwnode_handle *fn;
-	struct irq_domain *d;
-
 	if (disable_apic)
 		return NULL;

-	fn = irq_domain_alloc_named_fwnode("PCI-MSI");
-	if (!fn)
-		return NULL;
-
-	d = pci_msi_create_irq_domain(fn, &pci_msi_domain_info,
-				      x86_vector_domain);
-	if (!d) {
-		irq_domain_free_fwnode(fn);
-		pr_warn("Failed to initialize PCI-MSI irqdomain.\n");
-	} else {
-		d->flags |= IRQ_DOMAIN_MSI_NOMASK_QUIRK;
-	}
-	return d;
+	x86_vector_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
+	x86_vector_domain->msi_parent_ops = &x86_vector_msi_parent_ops;
+	return x86_vector_domain;
 }

 void __init x86_create_pci_msi_domain(void)
@@ -213,41 +282,19 @@ void __init x86_create_pci_msi_domain(void)
 	x86_pci_msi_default_domain = x86_init.irqs.create_pci_msi_domain();
 }

-#ifdef CONFIG_IRQ_REMAP
-static struct irq_chip pci_msi_ir_controller = {
-	.name			= "IR-PCI-MSI",
-	.irq_unmask		= pci_msi_unmask_irq,
-	.irq_mask		= pci_msi_mask_irq,
-	.irq_ack		= irq_chip_ack_parent,
-	.irq_retrigger		= irq_chip_retrigger_hierarchy,
-	.flags			= IRQCHIP_SKIP_SET_WAKE |
-				  IRQCHIP_AFFINITY_PRE_STARTUP,
-};
-
-static struct msi_domain_info pci_msi_ir_domain_info = {
-	.flags		= MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
-			  MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX,
-	.ops		= &pci_msi_domain_ops,
-	.chip		= &pci_msi_ir_controller,
-	.handler	= handle_edge_irq,
-	.handler_name	= "edge",
-};
-
-struct irq_domain *arch_create_remap_msi_irq_domain(struct irq_domain *parent,
-						    const char *name, int id)
+/* Keep around for hyperV */
+int pci_msi_prepare(struct irq_domain *domain, struct device *dev, int nvec,
+		    msi_alloc_info_t *arg)
 {
-	struct fwnode_handle *fn;
-	struct irq_domain *d;
+	init_irq_alloc_info(arg, NULL);

-	fn = irq_domain_alloc_named_id_fwnode(name, id);
-	if (!fn)
-		return NULL;
-	d = pci_msi_create_irq_domain(fn, &pci_msi_ir_domain_info, parent);
-	if (!d)
-		irq_domain_free_fwnode(fn);
-	return d;
+	if (to_pci_dev(dev)->msix_enabled)
+		arg->type = X86_IRQ_ALLOC_TYPE_PCI_MSIX;
+	else
+		arg->type = X86_IRQ_ALLOC_TYPE_PCI_MSI;
+	return 0;
 }
-#endif
+EXPORT_SYMBOL_GPL(pci_msi_prepare);

 #ifdef CONFIG_DMAR_TABLE
 /*
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -539,10 +539,6 @@ static int x86_vector_alloc_irqs(struct irq_domain *domain, unsigned int virq,
 	if (disable_apic)
 		return -ENXIO;

-	/* Currently vector allocator can't guarantee contiguous allocations */
-	if ((info->flags & X86_IRQ_ALLOC_CONTIGUOUS_VECTORS) && nr_irqs > 1)
-		return -ENOSYS;
-
 	/*
 	 * Catch any attempt to touch the cascade interrupt on a PIC
 	 * equipped system.
--- a/arch/x86/platform/olpc/olpc-xo15-sci.c
+++ b/arch/x86/platform/olpc/olpc-xo15-sci.c
@@ -183,13 +183,12 @@ static int xo15_sci_add(struct acpi_device *device)
 	return r;
 }

-static int xo15_sci_remove(struct acpi_device *device)
+static void xo15_sci_remove(struct acpi_device *device)
 {
 	acpi_disable_gpe(NULL, xo15_sci_gpe);
 	acpi_remove_gpe_handler(NULL, xo15_sci_gpe, xo15_sci_gpe_handler);
 	cancel_work_sync(&sci_work);
 	sysfs_remove_file(&device->dev.kobj, &lid_wake_on_close_attr.attr);
-	return 0;
 }

 #ifdef CONFIG_PM_SLEEP
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -564,6 +564,16 @@ config ACPI_PCC
 	  Enable this feature if you want to set up and install the PCC Address
 	  Space handler to handle PCC OpRegion in the firmware.

+config ACPI_FFH
+	bool "ACPI FFH Address Space"
+	default n
+	help
+	  The FFH(Fixed Function Hardware) Address Space also referred as FFH
+	  Operation Region allows to define platform specific opregion.
+
+	  Enable this feature if you want to set up and install the FFH Address
+	  Space handler to handle FFH OpRegion in the firmware.
+
 source "drivers/acpi/pmic/Kconfig"

 config ACPI_VIOT
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -68,6 +68,7 @@ acpi-$(CONFIG_ACPI_GENERIC_GSI) += irq.o
 acpi-$(CONFIG_ACPI_WATCHDOG)	+= acpi_watchdog.o
 acpi-$(CONFIG_ACPI_PRMT)	+= prmt.o
 acpi-$(CONFIG_ACPI_PCC)		+= acpi_pcc.o
+acpi-$(CONFIG_ACPI_FFH)		+= acpi_ffh.o

 # Address translation
 acpi-$(CONFIG_ACPI_ADXL)	+= acpi_adxl.o
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -33,7 +33,7 @@ MODULE_DESCRIPTION("ACPI AC Adapter Driver");
 MODULE_LICENSE("GPL");

 static int acpi_ac_add(struct acpi_device *device);
-static int acpi_ac_remove(struct acpi_device *device);
+static void acpi_ac_remove(struct acpi_device *device);
 static void acpi_ac_notify(struct acpi_device *device, u32 event);

 static const struct acpi_device_id ac_device_ids[] = {
@@ -288,12 +288,12 @@ static int acpi_ac_resume(struct device *dev)
 #define acpi_ac_resume NULL
 #endif

-static int acpi_ac_remove(struct acpi_device *device)
+static void acpi_ac_remove(struct acpi_device *device)
 {
 	struct acpi_ac *ac = NULL;

 	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
+		return;

 	ac = acpi_driver_data(device);

@@ -301,8 +301,6 @@ static int acpi_ac_remove(struct acpi_device *device)
 	unregister_acpi_notifier(&ac->battery_nb);

 	kfree(ac);
-
-	return 0;
 }

 static int __init acpi_ac_init(void)
--- a/drivers/acpi/acpi_ffh.c
+++ b/drivers/acpi/acpi_ffh.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Author: Sudeep Holla <sudeep.holla@arm.com>
+ * Copyright 2022 Arm Limited
+ */
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/completion.h>
+#include <linux/idr.h>
+#include <linux/io.h>
+
+#include <linux/arm-smccc.h>
+
+static struct acpi_ffh_info ffh_ctx;
+
+int __weak acpi_ffh_address_space_arch_setup(void *handler_ctxt,
+					     void **region_ctxt)
+{
+	return -EOPNOTSUPP;
+}
+
+int __weak acpi_ffh_address_space_arch_handler(acpi_integer *value,
+					       void *region_context)
+{
+	return -EOPNOTSUPP;
+}
+
+static acpi_status
+acpi_ffh_address_space_setup(acpi_handle region_handle, u32 function,
+			     void *handler_context,  void **region_context)
+{
+	return acpi_ffh_address_space_arch_setup(handler_context,
+						 region_context);
+}
+
+static acpi_status
+acpi_ffh_address_space_handler(u32 function, acpi_physical_address addr,
+			       u32 bits, acpi_integer *value,
+			       void *handler_context, void *region_context)
+{
+	return acpi_ffh_address_space_arch_handler(value, region_context);
+}
+
+void __init acpi_init_ffh(void)
+{
+	acpi_status status;
+
+	status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
+						    ACPI_ADR_SPACE_FIXED_HARDWARE,
+						    &acpi_ffh_address_space_handler,
+						    &acpi_ffh_address_space_setup,
+						    &ffh_ctx);
+	if (ACPI_FAILURE(status))
+		pr_alert("OperationRegion handler could not be installed\n");
+}
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -287,7 +287,7 @@ static ssize_t rrtime_store(struct device *dev,
 static ssize_t rrtime_show(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%d\n", round_robin_time);
+	return sysfs_emit(buf, "%d\n", round_robin_time);
 }
 static DEVICE_ATTR_RW(rrtime);

@@ -309,7 +309,7 @@ static ssize_t idlepct_store(struct device *dev,
 static ssize_t idlepct_show(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%d\n", idle_pct);
+	return sysfs_emit(buf, "%d\n", idle_pct);
 }
 static DEVICE_ATTR_RW(idlepct);

@@ -449,7 +449,7 @@ static int acpi_pad_add(struct acpi_device *device)
 	return 0;
 }

-static int acpi_pad_remove(struct acpi_device *device)
+static void acpi_pad_remove(struct acpi_device *device)
 {
 	mutex_lock(&isolated_cpus_lock);
 	acpi_pad_idle_cpus(0);
@@ -458,7 +458,6 @@ static int acpi_pad_remove(struct acpi_device *device)
 	acpi_remove_notify_handler(device->handle,
 		ACPI_DEVICE_NOTIFY, acpi_pad_notify);
 	acpi_pad_remove_sysfs(device);
-	return 0;
 }

 static const struct acpi_device_id pad_device_ids[] = {
--- a/drivers/acpi/acpi_pcc.c
+++ b/drivers/acpi/acpi_pcc.c
@@ -53,6 +53,7 @@ acpi_pcc_address_space_setup(acpi_handle region_handle, u32 function,
 	struct pcc_data *data;
 	struct acpi_pcc_info *ctx = handler_context;
 	struct pcc_mbox_chan *pcc_chan;
+	static acpi_status ret;

 	data = kzalloc(sizeof(*data), GFP_KERNEL);
 	if (!data)
@@ -69,23 +70,35 @@ acpi_pcc_address_space_setup(acpi_handle region_handle, u32 function,
 	if (IS_ERR(data->pcc_chan)) {
 		pr_err("Failed to find PCC channel for subspace %d\n",
 		       ctx->subspace_id);
-		kfree(data);
-		return AE_NOT_FOUND;
+		ret = AE_NOT_FOUND;
+		goto err_free_data;
 	}

 	pcc_chan = data->pcc_chan;
+	if (!pcc_chan->mchan->mbox->txdone_irq) {
+		pr_err("This channel-%d does not support interrupt.\n",
+		       ctx->subspace_id);
+		ret = AE_SUPPORT;
+		goto err_free_channel;
+	}
 	data->pcc_comm_addr = acpi_os_ioremap(pcc_chan->shmem_base_addr,
 					      pcc_chan->shmem_size);
 	if (!data->pcc_comm_addr) {
 		pr_err("Failed to ioremap PCC comm region mem for %d\n",
 		       ctx->subspace_id);
-		pcc_mbox_free_channel(data->pcc_chan);
-		kfree(data);
-		return AE_NO_MEMORY;
+		ret = AE_NO_MEMORY;
+		goto err_free_channel;
 	}

 	*region_context = data;
 	return AE_OK;
+
+err_free_channel:
+	pcc_mbox_free_channel(data->pcc_chan);
+err_free_data:
+	kfree(data);
+
+	return ret;
 }

 static acpi_status
@@ -106,19 +119,17 @@ acpi_pcc_address_space_handler(u32 function, acpi_physical_address addr,
 	if (ret < 0)
 		return AE_ERROR;

-	if (data->pcc_chan->mchan->mbox->txdone_irq) {
-		/*
-		 * pcc_chan->latency is just a Nominal value. In reality the remote
-		 * processor could be much slower to reply. So add an arbitrary
-		 * amount of wait on top of Nominal.
-		 */
-		usecs_lat = PCC_CMD_WAIT_RETRIES_NUM * data->pcc_chan->latency;
-		ret = wait_for_completion_timeout(&data->done,
-						  usecs_to_jiffies(usecs_lat));
-		if (ret == 0) {
-			pr_err("PCC command executed timeout!\n");
-			return AE_TIME;
-		}
+	/*
+	 * pcc_chan->latency is just a Nominal value. In reality the remote
+	 * processor could be much slower to reply. So add an arbitrary
+	 * amount of wait on top of Nominal.
+	 */
+	usecs_lat = PCC_CMD_WAIT_RETRIES_NUM * data->pcc_chan->latency;
+	ret = wait_for_completion_timeout(&data->done,
+						usecs_to_jiffies(usecs_lat));
+	if (ret == 0) {
+		pr_err("PCC command executed timeout!\n");
+		return AE_TIME;
 	}

 	mbox_chan_txdone(data->pcc_chan->mchan, ret);
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -86,7 +86,7 @@ static DEFINE_MUTEX(register_count_mutex);
 static DEFINE_MUTEX(video_list_lock);
 static LIST_HEAD(video_bus_head);
 static int acpi_video_bus_add(struct acpi_device *device);
-static int acpi_video_bus_remove(struct acpi_device *device);
+static void acpi_video_bus_remove(struct acpi_device *device);
 static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
 static void acpi_video_bus_register_backlight_work(struct work_struct *ignored);
 static DECLARE_DELAYED_WORK(video_bus_register_backlight_work,
@@ -2067,13 +2067,13 @@ static int acpi_video_bus_add(struct acpi_device *device)
 	return error;
 }

-static int acpi_video_bus_remove(struct acpi_device *device)
+static void acpi_video_bus_remove(struct acpi_device *device)
 {
 	struct acpi_video_bus *video = NULL;


 	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
+		return;

 	video = acpi_driver_data(device);

@@ -2087,8 +2087,6 @@ static int acpi_video_bus_remove(struct acpi_device *device)

 	kfree(video->attached_array);
 	kfree(video);
-
-	return 0;
 }

 static void acpi_video_bus_register_backlight_work(struct work_struct *ignored)
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -155,6 +155,7 @@ acpi-y +=		\
 	utalloc.o	\
 	utascii.o	\
 	utbuffer.o	\
+	utcksum.o	\
 	utcopy.o	\
 	utexcep.o	\
 	utdebug.o	\
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -24,6 +24,7 @@ ACPI_GLOBAL(struct acpi_table_list, acpi_gbl_root_table_list);

 ACPI_GLOBAL(struct acpi_table_header *, acpi_gbl_DSDT);
 ACPI_GLOBAL(struct acpi_table_header, acpi_gbl_original_dsdt_header);
+ACPI_INIT_GLOBAL(char *, acpi_gbl_CDAT, NULL);
 ACPI_INIT_GLOBAL(u32, acpi_gbl_dsdt_index, ACPI_INVALID_TABLE_INDEX);
 ACPI_INIT_GLOBAL(u32, acpi_gbl_facs_index, ACPI_INVALID_TABLE_INDEX);
 ACPI_INIT_GLOBAL(u32, acpi_gbl_xfacs_index, ACPI_INVALID_TABLE_INDEX);
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -124,11 +124,6 @@ void
 acpi_tb_print_table_header(acpi_physical_address address,
 			   struct acpi_table_header *header);

-u8 acpi_tb_checksum(u8 *buffer, u32 length);
-
-acpi_status
-acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length);
-
 void acpi_tb_check_dsdt_header(void);

 struct acpi_table_header *acpi_tb_copy_dsdt(u32 table_index);
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -158,6 +158,19 @@ u8 acpi_ut_valid_name_char(char character, u32 position);

 void acpi_ut_check_and_repair_ascii(u8 *name, char *repaired_name, u32 count);

+/*
+ * utcksum - Checksum utilities
+ */
+u8 acpi_ut_generate_checksum(void *table, u32 length, u8 original_checksum);
+
+u8 acpi_ut_checksum(u8 *buffer, u32 length);
+
+acpi_status
+acpi_ut_verify_cdat_checksum(struct acpi_table_cdat *cdat_table, u32 length);
+
+acpi_status
+acpi_ut_verify_checksum(struct acpi_table_header *table, u32 length);
+
 /*
 * utnonansi - Non-ANSI C library functions
 */
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -517,7 +517,7 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
 	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
 	if (!info) {
 		status = AE_NO_MEMORY;
-		goto cleanup;
+		goto pop_walk_state;
 	}

 	info->parameters = &this_walk_state->operands[0];
@@ -529,7 +529,7 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,

 	ACPI_FREE(info);
 	if (ACPI_FAILURE(status)) {
-		goto cleanup;
+		goto pop_walk_state;
 	}

 	next_walk_state->method_nesting_depth =
@@ -575,6 +575,12 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,

 	return_ACPI_STATUS(status);

+pop_walk_state:
+
+	/* On error, pop the walk state to be deleted from thread */
+
+	acpi_ds_pop_walk_state(thread);
+
 cleanup:

 	/* On error, we must terminate the method properly */
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -142,6 +142,9 @@ static acpi_status acpi_ev_fixed_event_initialize(void)
 			status =
 			    acpi_write_bit_register(acpi_gbl_fixed_event_info
 						    [i].enable_register_id,
+						    (i ==
+						     ACPI_EVENT_PCIE_WAKE) ?
+						    ACPI_ENABLE_EVENT :
 						    ACPI_DISABLE_EVENT);
 			if (ACPI_FAILURE(status)) {
 				return (status);
@@ -185,6 +188,11 @@ u32 acpi_ev_fixed_event_detect(void)
 		return (int_status);
 	}

+	if (fixed_enable & ACPI_BITMASK_PCIEXP_WAKE_DISABLE)
+		fixed_enable &= ~ACPI_BITMASK_PCIEXP_WAKE_DISABLE;
+	else
+		fixed_enable |= ACPI_BITMASK_PCIEXP_WAKE_DISABLE;
+
 	ACPI_DEBUG_PRINT((ACPI_DB_INTERRUPTS,
 			  "Fixed Event Block: Enable %08X Status %08X\n",
 			  fixed_enable, fixed_status));
@@ -250,6 +258,9 @@ static u32 acpi_ev_fixed_event_dispatch(u32 event)
 	if (!acpi_gbl_fixed_event_handlers[event].handler) {
 		(void)acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
 					      enable_register_id,
+					      (event ==
+					       ACPI_EVENT_PCIE_WAKE) ?
+					      ACPI_ENABLE_EVENT :
 					      ACPI_DISABLE_EVENT);

 		ACPI_ERROR((AE_INFO,
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -172,6 +172,15 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
 			ctx->subspace_id = (u8)region_obj->region.address;
 		}

+		if (region_obj->region.space_id ==
+		    ACPI_ADR_SPACE_FIXED_HARDWARE) {
+			struct acpi_ffh_info *ctx =
+			    handler_desc->address_space.context;
+
+			ctx->length = region_obj->region.length;
+			ctx->offset = region_obj->region.address;
+		}
+
 		/*
 		 * We must exit the interpreter because the region setup will
 		 * potentially execute control methods (for example, the _REG method
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -295,8 +295,8 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
 						 target));
 	}
 	if (target->common.type != ACPI_TYPE_INTEGER) {
-		ACPI_EXCEPTION((AE_INFO, AE_TYPE,
-				"Type not integer: %X\n", target->common.type));
+		ACPI_ERROR((AE_INFO, "Type not integer: %X",
+			    target->common.type));
 		return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 	}

--- a/drivers/acpi/acpica/exfield.c
+++ b/drivers/acpi/acpica/exfield.c
@@ -141,7 +141,9 @@ acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state,
 		    || obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_IPMI
 		    || obj_desc->field.region_obj->region.space_id ==
-		    ACPI_ADR_SPACE_PLATFORM_RT)) {
+		    ACPI_ADR_SPACE_PLATFORM_RT
+		    || obj_desc->field.region_obj->region.space_id ==
+		    ACPI_ADR_SPACE_FIXED_HARDWARE)) {

 		/* SMBus, GSBus, IPMI serial */

@@ -305,7 +307,9 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
 		    || obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_IPMI
 		    || obj_desc->field.region_obj->region.space_id ==
-		    ACPI_ADR_SPACE_PLATFORM_RT)) {
+		    ACPI_ADR_SPACE_PLATFORM_RT
+		    || obj_desc->field.region_obj->region.space_id ==
+		    ACPI_ADR_SPACE_FIXED_HARDWARE)) {

 		/* SMBus, GSBus, IPMI serial */

--- a/drivers/acpi/acpica/exserial.c
+++ b/drivers/acpi/acpica/exserial.c
@@ -323,6 +323,12 @@ acpi_ex_write_serial_bus(union acpi_operand_object *source_desc,
 		function = ACPI_WRITE;
 		break;

+	case ACPI_ADR_SPACE_FIXED_HARDWARE:
+
+		buffer_length = ACPI_FFH_INPUT_BUFFER_SIZE;
+		function = ACPI_WRITE;
+		break;
+
 	default:
 		return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
 	}
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -311,6 +311,20 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state)
 				    [ACPI_EVENT_SLEEP_BUTTON].
 				    status_register_id, ACPI_CLEAR_STATUS);

+	/* Enable pcie wake event if support */
+	if ((acpi_gbl_FADT.flags & ACPI_FADT_PCI_EXPRESS_WAKE)) {
+		(void)
+		    acpi_write_bit_register(acpi_gbl_fixed_event_info
+					    [ACPI_EVENT_PCIE_WAKE].
+					    enable_register_id,
+					    ACPI_DISABLE_EVENT);
+		(void)
+		    acpi_write_bit_register(acpi_gbl_fixed_event_info
+					    [ACPI_EVENT_PCIE_WAKE].
+					    status_register_id,
+					    ACPI_CLEAR_STATUS);
+	}
+
 	acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
 	return_ACPI_STATUS(status);
 }
--- a/drivers/acpi/acpica/tbdata.c
+++ b/drivers/acpi/acpica/tbdata.c
@@ -522,7 +522,7 @@ acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc,
 		/* Verify the checksum */

 		status =
-		    acpi_tb_verify_checksum(table_desc->pointer,
+		    acpi_ut_verify_checksum(table_desc->pointer,
 					    table_desc->length);
 		if (ACPI_FAILURE(status)) {
 			ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -298,7 +298,7 @@ void acpi_tb_parse_fadt(void)
 	 * Validate the FADT checksum before we copy the table. Ignore
 	 * checksum error as we want to try to get the DSDT and FACS.
 	 */
-	(void)acpi_tb_verify_checksum(table, length);
+	(void)acpi_ut_verify_checksum(table, length);

 	/* Create a local copy of the FADT in common ACPI 2.0+ format */

--- a/drivers/acpi/acpica/tbprint.c
+++ b/drivers/acpi/acpica/tbprint.c
@@ -10,6 +10,7 @@
 #include <acpi/acpi.h>
 #include "accommon.h"
 #include "actables.h"
+#include "acutils.h"

 #define _COMPONENT          ACPI_TABLES
 ACPI_MODULE_NAME("tbprint")
@@ -39,7 +40,7 @@ static void acpi_tb_fix_string(char *string, acpi_size length)
 {

 	while (length && *string) {
-		if (!isprint((int)*string)) {
+		if (!isprint((int)(u8)*string)) {
 			*string = '?';
 		}

@@ -135,77 +136,3 @@ acpi_tb_print_table_header(acpi_physical_address address,
 			   local_header.asl_compiler_revision));
 	}
 }
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_tb_validate_checksum
- *
- * PARAMETERS:  table               - ACPI table to verify
- *              length              - Length of entire table
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
- *              exception on bad checksum.
- *
- ******************************************************************************/
-
-acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)
-{
-	u8 checksum;
-
-	/*
-	 * FACS/S3PT:
-	 * They are the odd tables, have no standard ACPI header and no checksum
-	 */
-
-	if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_S3PT) ||
-	    ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_FACS)) {
-		return (AE_OK);
-	}
-
-	/* Compute the checksum on the table */
-
-	checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);
-
-	/* Checksum ok? (should be zero) */
-
-	if (checksum) {
-		ACPI_BIOS_WARNING((AE_INFO,
-				   "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
-				   "should be 0x%2.2X",
-				   table->signature, table->checksum,
-				   (u8)(table->checksum - checksum)));
-
-#if (ACPI_CHECKSUM_ABORT)
-		return (AE_BAD_CHECKSUM);
-#endif
-	}
-
-	return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_tb_checksum
- *
- * PARAMETERS:  buffer          - Pointer to memory region to be checked
- *              length          - Length of this memory region
- *
- * RETURN:      Checksum (u8)
- *
- * DESCRIPTION: Calculates circular checksum of memory region.
- *
- ******************************************************************************/
-
-u8 acpi_tb_checksum(u8 *buffer, u32 length)
-{
-	u8 sum = 0;
-	u8 *end = buffer + length;
-
-	while (buffer < end) {
-		sum = (u8)(sum + *(buffer++));
-	}
-
-	return (sum);
-}
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -299,7 +299,7 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address)

 	/* Validate the root table checksum */

-	status = acpi_tb_verify_checksum(table, length);
+	status = acpi_ut_verify_checksum(table, length);
 	if (ACPI_FAILURE(status)) {
 		acpi_os_unmap_memory(table, length);
 		return_ACPI_STATUS(status);
--- a/drivers/acpi/acpica/tbxfroot.c
+++ b/drivers/acpi/acpica/tbxfroot.c
@@ -74,14 +74,14 @@ acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)

 	/* Check the standard checksum */

-	if (acpi_tb_checksum((u8 *) rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
+	if (acpi_ut_checksum((u8 *)rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
 		return (AE_BAD_CHECKSUM);
 	}

 	/* Check extended checksum if table version >= 2 */

 	if ((rsdp->revision >= 2) &&
-	    (acpi_tb_checksum((u8 *) rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) {
+	    (acpi_ut_checksum((u8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) {
 		return (AE_BAD_CHECKSUM);
 	}

@@ -114,6 +114,7 @@ acpi_find_root_pointer(acpi_physical_address *table_address)
 	u8 *table_ptr;
 	u8 *mem_rover;
 	u32 physical_address;
+	u32 ebda_window_size;

 	ACPI_FUNCTION_TRACE(acpi_find_root_pointer);

@@ -139,26 +140,37 @@ acpi_find_root_pointer(acpi_physical_address *table_address)

 	/* EBDA present? */

-	if (physical_address > 0x400) {
+	/*
+	 * Check that the EBDA pointer from memory is sane and does not point
+	 * above valid low memory
+	 */
+	if (physical_address > 0x400 && physical_address < 0xA0000) {
 		/*
-		 * 1b) Search EBDA paragraphs (EBDA is required to be a
-		 *     minimum of 1K length)
+		 * Calculate the scan window size
+		 * The EBDA is not guaranteed to be larger than a ki_b and in case
+		 * that it is smaller, the scanning function would leave the low
+		 * memory and continue to the VGA range.
+		 */
+		ebda_window_size = ACPI_MIN(ACPI_EBDA_WINDOW_SIZE,
+					    0xA0000 - physical_address);
+
+		/*
+		 * 1b) Search EBDA paragraphs
 		 */
 		table_ptr = acpi_os_map_memory((acpi_physical_address)
 					       physical_address,
-					       ACPI_EBDA_WINDOW_SIZE);
+					       ebda_window_size);
 		if (!table_ptr) {
 			ACPI_ERROR((AE_INFO,
 				    "Could not map memory at 0x%8.8X for length %u",
-				    physical_address, ACPI_EBDA_WINDOW_SIZE));
+				    physical_address, ebda_window_size));

 			return_ACPI_STATUS(AE_NO_MEMORY);
 		}

 		mem_rover =
-		    acpi_tb_scan_memory_for_rsdp(table_ptr,
-						 ACPI_EBDA_WINDOW_SIZE);
-		acpi_os_unmap_memory(table_ptr, ACPI_EBDA_WINDOW_SIZE);
+		    acpi_tb_scan_memory_for_rsdp(table_ptr, ebda_window_size);
+		acpi_os_unmap_memory(table_ptr, ebda_window_size);

 		if (mem_rover) {

--- a/drivers/acpi/acpica/utcksum.c
+++ b/drivers/acpi/acpica/utcksum.c
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: utcksum - Support generating table checksums
+ *
+ * Copyright (C) 2000 - 2022, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acutils.h"
+
+/* This module used for application-level code only */
+
+#define _COMPONENT          ACPI_CA_DISASSEMBLER
+ACPI_MODULE_NAME("utcksum")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_verify_checksum
+ *
+ * PARAMETERS:  table               - ACPI table to verify
+ *              length              - Length of entire table
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
+ *              exception on bad checksum.
+ *              Note: We don't have to check for a CDAT here, since CDAT is
+ *              not in the RSDT/XSDT, and the CDAT table is never installed
+ *              via ACPICA.
+ *
+ ******************************************************************************/
+acpi_status acpi_ut_verify_checksum(struct acpi_table_header *table, u32 length)
+{
+	u8 checksum;
+
+	/*
+	 * FACS/S3PT:
+	 * They are the odd tables, have no standard ACPI header and no checksum
+	 */
+	if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_S3PT) ||
+	    ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_FACS)) {
+		return (AE_OK);
+	}
+
+	/* Compute the checksum on the table */
+
+	length = table->length;
+	checksum =
+	    acpi_ut_generate_checksum(ACPI_CAST_PTR(u8, table), length,
+				      table->checksum);
+
+	/* Computed checksum matches table? */
+
+	if (checksum != table->checksum) {
+		ACPI_BIOS_WARNING((AE_INFO,
+				   "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
+				   "should be 0x%2.2X",
+				   table->signature, table->checksum,
+				   table->checksum - checksum));
+
+#if (ACPI_CHECKSUM_ABORT)
+		return (AE_BAD_CHECKSUM);
+#endif
+	}
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_verify_cdat_checksum
+ *
+ * PARAMETERS:  table               - CDAT ACPI table to verify
+ *              length              - Length of entire table
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Verifies that the CDAT table checksums to zero. Optionally
+ *              returns an exception on bad checksum.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_verify_cdat_checksum(struct acpi_table_cdat *cdat_table, u32 length)
+{
+	u8 checksum;
+
+	/* Compute the checksum on the table */
+
+	checksum = acpi_ut_generate_checksum(ACPI_CAST_PTR(u8, cdat_table),
+					     cdat_table->length,
+					     cdat_table->checksum);
+
+	/* Computed checksum matches table? */
+
+	if (checksum != cdat_table->checksum) {
+		ACPI_BIOS_WARNING((AE_INFO,
+				   "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
+				   "should be 0x%2.2X",
+				   acpi_gbl_CDAT, cdat_table->checksum,
+				   checksum));
+
+#if (ACPI_CHECKSUM_ABORT)
+		return (AE_BAD_CHECKSUM);
+#endif
+	}
+
+	cdat_table->checksum = checksum;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_generate_checksum
+ *
+ * PARAMETERS:  table               - Pointer to table to be checksummed
+ *              length              - Length of the table
+ *              original_checksum   - Value of the checksum field
+ *
+ * RETURN:      8 bit checksum of buffer
+ *
+ * DESCRIPTION: Computes an 8 bit checksum of the table.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_generate_checksum(void *table, u32 length, u8 original_checksum)
+{
+	u8 checksum;
+
+	/* Sum the entire table as-is */
+
+	checksum = acpi_ut_checksum((u8 *)table, length);
+
+	/* Subtract off the existing checksum value in the table */
+
+	checksum = (u8)(checksum - original_checksum);
+
+	/* Compute and return the final checksum */
+
+	checksum = (u8)(0 - checksum);
+	return (checksum);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_checksum
+ *
+ * PARAMETERS:  buffer          - Pointer to memory region to be checked
+ *              length          - Length of this memory region
+ *
+ * RETURN:      Checksum (u8)
+ *
+ * DESCRIPTION: Calculates circular checksum of memory region.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_checksum(u8 *buffer, u32 length)
+{
+	u8 sum = 0;
+	u8 *end = buffer + length;
+
+	while (buffer < end) {
+		sum = (u8)(sum + *(buffer++));
+	}
+
+	return (sum);
+}
--- a/drivers/acpi/acpica/utcopy.c
+++ b/drivers/acpi/acpica/utcopy.c
@@ -916,13 +916,6 @@ acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj,
 	status = acpi_ut_walk_package_tree(source_obj, dest_obj,
 					   acpi_ut_copy_ielement_to_ielement,
 					   walk_state);
-	if (ACPI_FAILURE(status)) {
-
-		/* On failure, delete the destination package object */
-
-		acpi_ut_remove_reference(dest_obj);
-	}
-
 	return_ACPI_STATUS(status);
 }

--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -186,6 +186,10 @@ struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] =
 					ACPI_BITREG_RT_CLOCK_ENABLE,
 					ACPI_BITMASK_RT_CLOCK_STATUS,
 					ACPI_BITMASK_RT_CLOCK_ENABLE},
+	/* ACPI_EVENT_PCIE_WAKE     */ {ACPI_BITREG_PCIEXP_WAKE_STATUS,
+					ACPI_BITREG_PCIEXP_WAKE_DISABLE,
+					ACPI_BITMASK_PCIEXP_WAKE_STATUS,
+					ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 };
 #endif				/* !ACPI_REDUCED_HARDWARE */

--- a/drivers/acpi/acpica/utstring.c
+++ b/drivers/acpi/acpica/utstring.c
@@ -145,7 +145,7 @@ void acpi_ut_repair_name(char *name)
 		return;
 	}

-	ACPI_COPY_NAMESEG(&original_name, name);
+	ACPI_COPY_NAMESEG(&original_name, &name[0]);

 	/* Check each character in the name */

@@ -156,10 +156,10 @@ void acpi_ut_repair_name(char *name)

 		/*
 		 * Replace a bad character with something printable, yet technically
-		 * still invalid. This prevents any collisions with existing "good"
+		 * "odd". This prevents any collisions with existing "good"
 		 * names in the namespace.
 		 */
-		name[i] = '*';
+		name[i] = '_';
 		found_bad_char = TRUE;
 	}

@@ -169,8 +169,8 @@ void acpi_ut_repair_name(char *name)

 		if (!acpi_gbl_enable_interpreter_slack) {
 			ACPI_WARNING((AE_INFO,
-				      "Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
-				      original_name, name));
+				      "Invalid character(s) in name (0x%.8X) %p, repaired: [%4.4s]",
+				      original_name, name, &name[0]));
 		} else {
 			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 					  "Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
--- a/drivers/acpi/apei/apei-base.c
+++ b/drivers/acpi/apei/apei-base.c
@@ -25,9 +25,9 @@
 #include <linux/slab.h>
 #include <linux/io.h>
 #include <linux/kref.h>
-#include <linux/rculist.h>
 #include <linux/interrupt.h>
 #include <linux/debugfs.h>
+#include <acpi/apei.h>
 #include <asm/unaligned.h>

 #include "apei-internal.h"
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -358,6 +358,7 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
 	 */
 	if ((param_extension || acpi5) && (type & MEM_ERROR_MASK) && param2) {
 		struct apei_resources addr_resources;
+
 		apei_resources_init(&addr_resources);
 		trigger_param_region = einj_get_trigger_parameter_region(
 			trigger_tab, param1, param2);
@@ -432,11 +433,11 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
 			}
 			v5param->flags = vendor_flags;
 		} else if (flags) {
-				v5param->flags = flags;
-				v5param->memory_address = param1;
-				v5param->memory_address_range = param2;
-				v5param->apicid = param3;
-				v5param->pcie_sbdf = param4;
+			v5param->flags = flags;
+			v5param->memory_address = param1;
+			v5param->memory_address_range = param2;
+			v5param->apicid = param3;
+			v5param->pcie_sbdf = param4;
 		} else {
 			switch (type) {
 			case ACPI_EINJ_PROCESSOR_CORRECTABLE:
@@ -466,6 +467,7 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
 			return rc;
 		if (einj_param) {
 			struct einj_parameter *v4param = einj_param;
+
 			v4param->param1 = param1;
 			v4param->param2 = param2;
 		}
@@ -569,6 +571,20 @@ static u64 error_param2;
 static u64 error_param3;
 static u64 error_param4;
 static struct dentry *einj_debug_dir;
+static const char * const einj_error_type_string[] = {
+	"0x00000001\tProcessor Correctable\n",
+	"0x00000002\tProcessor Uncorrectable non-fatal\n",
+	"0x00000004\tProcessor Uncorrectable fatal\n",
+	"0x00000008\tMemory Correctable\n",
+	"0x00000010\tMemory Uncorrectable non-fatal\n",
+	"0x00000020\tMemory Uncorrectable fatal\n",
+	"0x00000040\tPCI Express Correctable\n",
+	"0x00000080\tPCI Express Uncorrectable non-fatal\n",
+	"0x00000100\tPCI Express Uncorrectable fatal\n",
+	"0x00000200\tPlatform Correctable\n",
+	"0x00000400\tPlatform Uncorrectable non-fatal\n",
+	"0x00000800\tPlatform Uncorrectable fatal\n",
+};

 static int available_error_type_show(struct seq_file *m, void *v)
 {
@@ -578,30 +594,9 @@ static int available_error_type_show(struct seq_file *m, void *v)
 	rc = einj_get_available_error_type(&available_error_type);
 	if (rc)
 		return rc;
-	if (available_error_type & 0x0001)
-		seq_printf(m, "0x00000001\tProcessor Correctable\n");
-	if (available_error_type & 0x0002)
-		seq_printf(m, "0x00000002\tProcessor Uncorrectable non-fatal\n");
-	if (available_error_type & 0x0004)
-		seq_printf(m, "0x00000004\tProcessor Uncorrectable fatal\n");
-	if (available_error_type & 0x0008)
-		seq_printf(m, "0x00000008\tMemory Correctable\n");
-	if (available_error_type & 0x0010)
-		seq_printf(m, "0x00000010\tMemory Uncorrectable non-fatal\n");
-	if (available_error_type & 0x0020)
-		seq_printf(m, "0x00000020\tMemory Uncorrectable fatal\n");
-	if (available_error_type & 0x0040)
-		seq_printf(m, "0x00000040\tPCI Express Correctable\n");
-	if (available_error_type & 0x0080)
-		seq_printf(m, "0x00000080\tPCI Express Uncorrectable non-fatal\n");
-	if (available_error_type & 0x0100)
-		seq_printf(m, "0x00000100\tPCI Express Uncorrectable fatal\n");
-	if (available_error_type & 0x0200)
-		seq_printf(m, "0x00000200\tPlatform Correctable\n");
-	if (available_error_type & 0x0400)
-		seq_printf(m, "0x00000400\tPlatform Uncorrectable non-fatal\n");
-	if (available_error_type & 0x0800)
-		seq_printf(m, "0x00000800\tPlatform Uncorrectable fatal\n");
+	for (int pos = 0; pos < ARRAY_SIZE(einj_error_type_string); pos++)
+		if (available_error_type & BIT(pos))
+			seq_puts(m, einj_error_type_string[pos]);

 	return 0;
 }
@@ -689,8 +684,7 @@ static int __init einj_init(void)
 	if (status == AE_NOT_FOUND) {
 		pr_warn("EINJ table not found.\n");
 		return -ENODEV;
-	}
-	else if (ACPI_FAILURE(status)) {
+	} else if (ACPI_FAILURE(status)) {
 		pr_err("Failed to get EINJ table: %s\n",
 				acpi_format_exception(status));
 		return -EINVAL;
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -138,7 +138,7 @@ struct ghes_vendor_record_entry {
 static struct gen_pool *ghes_estatus_pool;
 static unsigned long ghes_estatus_pool_size_request;

-static struct ghes_estatus_cache *ghes_estatus_caches[GHES_ESTATUS_CACHES_SIZE];
+static struct ghes_estatus_cache __rcu *ghes_estatus_caches[GHES_ESTATUS_CACHES_SIZE];
 static atomic_t ghes_estatus_cache_alloced;

 static int ghes_panic_timeout __read_mostly = 30;
@@ -773,48 +773,42 @@ static struct ghes_estatus_cache *ghes_estatus_cache_alloc(
 	return cache;
 }

-static void ghes_estatus_cache_free(struct ghes_estatus_cache *cache)
+static void ghes_estatus_cache_rcu_free(struct rcu_head *head)
 {
+	struct ghes_estatus_cache *cache;
 	u32 len;

+	cache = container_of(head, struct ghes_estatus_cache, rcu);
 	len = cper_estatus_len(GHES_ESTATUS_FROM_CACHE(cache));
 	len = GHES_ESTATUS_CACHE_LEN(len);
 	gen_pool_free(ghes_estatus_pool, (unsigned long)cache, len);
 	atomic_dec(&ghes_estatus_cache_alloced);
 }

-static void ghes_estatus_cache_rcu_free(struct rcu_head *head)
+static void
+ghes_estatus_cache_add(struct acpi_hest_generic *generic,
+		       struct acpi_hest_generic_status *estatus)
 {
-	struct ghes_estatus_cache *cache;
-
-	cache = container_of(head, struct ghes_estatus_cache, rcu);
-	ghes_estatus_cache_free(cache);
-}
-
-static void ghes_estatus_cache_add(
-	struct acpi_hest_generic *generic,
-	struct acpi_hest_generic_status *estatus)
-{
-	int i, slot = -1, count;
 	unsigned long long now, duration, period, max_period = 0;
-	struct ghes_estatus_cache *cache, *slot_cache = NULL, *new_cache;
+	struct ghes_estatus_cache *cache, *new_cache;
+	struct ghes_estatus_cache __rcu *victim;
+	int i, slot = -1, count;

 	new_cache = ghes_estatus_cache_alloc(generic, estatus);
-	if (new_cache == NULL)
+	if (!new_cache)
 		return;
+
 	rcu_read_lock();
 	now = sched_clock();
 	for (i = 0; i < GHES_ESTATUS_CACHES_SIZE; i++) {
 		cache = rcu_dereference(ghes_estatus_caches[i]);
 		if (cache == NULL) {
 			slot = i;
-			slot_cache = NULL;
 			break;
 		}
 		duration = now - cache->time_in;
 		if (duration >= GHES_ESTATUS_IN_CACHE_MAX_NSEC) {
 			slot = i;
-			slot_cache = cache;
 			break;
 		}
 		count = atomic_read(&cache->count);
@@ -823,18 +817,30 @@ static void ghes_estatus_cache_add(
 		if (period > max_period) {
 			max_period = period;
 			slot = i;
-			slot_cache = cache;
 		}
 	}
-	/* new_cache must be put into array after its contents are written */
-	smp_wmb();
-	if (slot != -1 && cmpxchg(ghes_estatus_caches + slot,
-				  slot_cache, new_cache) == slot_cache) {
-		if (slot_cache)
-			call_rcu(&slot_cache->rcu, ghes_estatus_cache_rcu_free);
-	} else
-		ghes_estatus_cache_free(new_cache);
 	rcu_read_unlock();
+
+	if (slot != -1) {
+		/*
+		 * Use release semantics to ensure that ghes_estatus_cached()
+		 * running on another CPU will see the updated cache fields if
+		 * it can see the new value of the pointer.
+		 */
+		victim = xchg_release(&ghes_estatus_caches[slot],
+				      RCU_INITIALIZER(new_cache));
+
+		/*
+		 * At this point, victim may point to a cached item different
+		 * from the one based on which we selected the slot. Instead of
+		 * going to the loop again to pick another slot, let's just
+		 * drop the other item anyway: this may cause a false cache
+		 * miss later on, but that won't cause any problems.
+		 */
+		if (victim)
+			call_rcu(&unrcu_pointer(victim)->rcu,
+				 ghes_estatus_cache_rcu_free);
+	}
 }

 static void __ghes_panic(struct ghes *ghes,
@@ -1444,8 +1450,6 @@ static int ghes_remove(struct platform_device *ghes_dev)

 	kfree(ghes);

-	platform_set_drvdata(ghes_dev, NULL);
-
 	return 0;
 }

--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -696,7 +696,8 @@ static void __battery_hook_unregister(struct acpi_battery_hook *hook, int lock)
 	if (lock)
 		mutex_lock(&hook_mutex);
 	list_for_each_entry(battery, &acpi_battery_list, list) {
-		hook->remove_battery(battery->bat);
+		if (!hook->remove_battery(battery->bat))
+			power_supply_changed(battery->bat);
 	}
 	list_del(&hook->list);
 	if (lock)
@@ -735,6 +736,8 @@ void battery_hook_register(struct acpi_battery_hook *hook)
 			__battery_hook_unregister(hook, 0);
 			goto end;
 		}
+
+		power_supply_changed(battery->bat);
 	}
 	pr_info("new extension: %s\n", hook->name);
 end:
@@ -1208,12 +1211,12 @@ static int acpi_battery_add(struct acpi_device *device)
 	return result;
 }

-static int acpi_battery_remove(struct acpi_device *device)
+static void acpi_battery_remove(struct acpi_device *device)
 {
 	struct acpi_battery *battery = NULL;

 	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
+		return;
 	device_init_wakeup(&device->dev, 0);
 	battery = acpi_driver_data(device);
 	unregister_pm_notifier(&battery->pm_nb);
@@ -1221,7 +1224,6 @@ static int acpi_battery_remove(struct acpi_device *device)
 	mutex_destroy(&battery->lock);
 	mutex_destroy(&battery->sysfs_lock);
 	kfree(battery);
-	return 0;
 }

 #ifdef CONFIG_PM_SLEEP
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -323,6 +323,8 @@ static void acpi_bus_osc_negotiate_platform_control(void)
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
 	if (IS_ENABLED(CONFIG_ACPI_PRMT))
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PRM_SUPPORT;
+	if (IS_ENABLED(CONFIG_ACPI_FFH))
+		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_FFH_OPR_SUPPORT;

 #ifdef CONFIG_ARM64
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GENERIC_INITIATOR_SUPPORT;
@@ -1408,6 +1410,7 @@ static int __init acpi_init(void)
 		disable_acpi();
 		return result;
 	}
+	acpi_init_ffh();

 	pci_mmcfg_late_init();
 	acpi_iort_init();
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -125,7 +125,7 @@ static const struct dmi_system_id dmi_lid_quirks[] = {
 };

 static int acpi_button_add(struct acpi_device *device);
-static int acpi_button_remove(struct acpi_device *device);
+static void acpi_button_remove(struct acpi_device *device);
 static void acpi_button_notify(struct acpi_device *device, u32 event);

 #ifdef CONFIG_PM_SLEEP
@@ -580,14 +580,13 @@ static int acpi_button_add(struct acpi_device *device)
 	return error;
 }

-static int acpi_button_remove(struct acpi_device *device)
+static void acpi_button_remove(struct acpi_device *device)
 {
 	struct acpi_button *button = acpi_driver_data(device);

 	acpi_button_remove_fs(device);
 	input_unregister_device(button->input);
 	kfree(button);
-	return 0;
 }

 static int param_set_lid_init_state(const char *val,
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -148,7 +148,7 @@ __ATTR(_name, 0444, show_##_name, NULL)
 		if (ret)						\
 			return ret;					\
 									\
-		return scnprintf(buf, PAGE_SIZE, "%llu\n",		\
+		return sysfs_emit(buf, "%llu\n",		\
 				(u64)st_name.member_name);		\
 	}								\
 	define_one_cppc_ro(member_name)
@@ -174,7 +174,7 @@ static ssize_t show_feedback_ctrs(struct kobject *kobj,
 	if (ret)
 		return ret;

-	return scnprintf(buf, PAGE_SIZE, "ref:%llu del:%llu\n",
+	return sysfs_emit(buf, "ref:%llu del:%llu\n",
 			fb_ctrs.reference, fb_ctrs.delivered);
 }
 define_one_cppc_ro(feedback_ctrs);
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1663,12 +1663,12 @@ static int acpi_ec_add(struct acpi_device *device)
 	return ret;
 }

-static int acpi_ec_remove(struct acpi_device *device)
+static void acpi_ec_remove(struct acpi_device *device)
 {
 	struct acpi_ec *ec;

 	if (!device)
-		return -EINVAL;
+		return;

 	ec = acpi_driver_data(device);
 	release_region(ec->data_addr, 1);
@@ -1678,7 +1678,6 @@ static int acpi_ec_remove(struct acpi_device *device)
 		ec_remove_handlers(ec);
 		acpi_ec_free(ec);
 	}
-	return 0;
 }

 static acpi_status
@@ -1875,6 +1874,16 @@ static const struct dmi_system_id ec_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion Gaming Laptop 15-cx0xxx"),
 		},
 	},
+	{
+		/*
+		 * HP Pavilion Gaming Laptop 15-cx0041ur
+		 */
+		.callback = ec_honor_dsdt_gpe,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "HP 15-cx0041ur"),
+		},
+	},
 	{
 		/*
 		 * Samsung hardware
--- a/drivers/acpi/fan_attr.c
+++ b/drivers/acpi/fan_attr.c
@@ -27,24 +27,24 @@ static ssize_t show_state(struct device *dev, struct device_attribute *attr, cha
 		count = scnprintf(buf, PAGE_SIZE, "%lld:", fps->control);

 	if (fps->trip_point == 0xFFFFFFFF || fps->trip_point > 9)
-		count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:");
+		count += sysfs_emit_at(buf, count, "not-defined:");
 	else
-		count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->trip_point);
+		count += sysfs_emit_at(buf, count, "%lld:", fps->trip_point);

 	if (fps->speed == 0xFFFFFFFF)
-		count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:");
+		count += sysfs_emit_at(buf, count, "not-defined:");
 	else
-		count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->speed);
+		count += sysfs_emit_at(buf, count, "%lld:", fps->speed);

 	if (fps->noise_level == 0xFFFFFFFF)
-		count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:");
+		count += sysfs_emit_at(buf, count, "not-defined:");
 	else
-		count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->noise_level * 100);
+		count += sysfs_emit_at(buf, count, "%lld:", fps->noise_level * 100);

 	if (fps->power == 0xFFFFFFFF)
-		count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined\n");
+		count += sysfs_emit_at(buf, count, "not-defined\n");
 	else
-		count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld\n", fps->power);
+		count += sysfs_emit_at(buf, count, "%lld\n", fps->power);

 	return count;
 }
--- a/drivers/acpi/fan_core.c
+++ b/drivers/acpi/fan_core.c
@@ -236,6 +236,7 @@ static int acpi_fan_get_fif(struct acpi_device *device)
 	if (ACPI_FAILURE(status)) {
 		dev_err(&device->dev, "Invalid _FIF element\n");
 		status = -EINVAL;
+		goto err;
 	}

 	fan->fif.revision = fields[0];
--- a/drivers/acpi/hed.c
+++ b/drivers/acpi/hed.c
@@ -56,10 +56,9 @@ static int acpi_hed_add(struct acpi_device *device)
 	return 0;
 }

-static int acpi_hed_remove(struct acpi_device *device)
+static void acpi_hed_remove(struct acpi_device *device)
 {
 	hed_handle = NULL;
-	return 0;
 }

 static struct acpi_driver acpi_hed_driver = {
--- a/drivers/acpi/irq.c
+++ b/drivers/acpi/irq.c
@@ -94,6 +94,7 @@ EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
 /**
 * acpi_get_irq_source_fwhandle() - Retrieve fwhandle from IRQ resource source.
 * @source: acpi_resource_source to use for the lookup.
+ * @gsi: GSI IRQ number
 *
 * Description:
 * Retrieve the fwhandle of the device referenced by the given IRQ resource
@@ -297,8 +298,8 @@ EXPORT_SYMBOL_GPL(acpi_irq_get);
 /**
 * acpi_set_irq_model - Setup the GSI irqdomain information
 * @model: the value assigned to acpi_irq_model
- * @fwnode: the irq_domain identifier for mapping and looking up
- *          GSI interrupts
+ * @fn: a dispatcher function that will return the domain fwnode
+ *	for a given GSI
 */
 void __init acpi_set_irq_model(enum acpi_irq_model_id model,
 			       struct fwnode_handle *(*fn)(u32))
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -3371,10 +3371,9 @@ static int acpi_nfit_add(struct acpi_device *adev)
 	return devm_add_action_or_reset(dev, acpi_nfit_shutdown, acpi_desc);
 }

-static int acpi_nfit_remove(struct acpi_device *adev)
+static void acpi_nfit_remove(struct acpi_device *adev)
 {
 	/* see acpi_nfit_unregister */
-	return 0;
 }

 static void acpi_nfit_update_notify(struct device *dev, acpi_handle handle)
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -387,13 +387,15 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
 	u8 pin;
 	int triggering = ACPI_LEVEL_SENSITIVE;
 	/*
-	 * On ARM systems with the GIC interrupt model, level interrupts
+	 * On ARM systems with the GIC interrupt model, or LoongArch
+	 * systems with the LPIC interrupt model, level interrupts
 	 * are always polarity high by specification; PCI legacy
 	 * IRQs lines are inverted before reaching the interrupt
 	 * controller and must therefore be considered active high
 	 * as default.
 	 */
-	int polarity = acpi_irq_model == ACPI_IRQ_MODEL_GIC ?
+	int polarity = acpi_irq_model == ACPI_IRQ_MODEL_GIC ||
+		       acpi_irq_model == ACPI_IRQ_MODEL_LPIC ?
 				      ACPI_ACTIVE_HIGH : ACPI_ACTIVE_LOW;
 	char *link = NULL;
 	char link_desc[16];
--- a/drivers/acpi/pfr_telemetry.c
+++ b/drivers/acpi/pfr_telemetry.c
@@ -144,7 +144,7 @@ static int get_pfrt_log_data_info(struct pfrt_log_data_info *data_info,
 	ret = 0;

 free_acpi_buffer:
-	kfree(out_obj);
+	ACPI_FREE(out_obj);

 	return ret;
 }
@@ -180,7 +180,7 @@ static int set_pfrt_log_level(int level, struct pfrt_log_device *pfrt_log_dev)
 		ret = -EBUSY;
 	}

-	kfree(out_obj);
+	ACPI_FREE(out_obj);

 	return ret;
 }
@@ -218,7 +218,7 @@ static int get_pfrt_log_level(struct pfrt_log_device *pfrt_log_dev)
 	ret = obj->integer.value;

 free_acpi_buffer:
-	kfree(out_obj);
+	ACPI_FREE(out_obj);

 	return ret;
 }
--- a/drivers/acpi/pfr_update.c
+++ b/drivers/acpi/pfr_update.c
@@ -178,7 +178,7 @@ static int query_capability(struct pfru_update_cap_info *cap_hdr,
 	ret = 0;

 free_acpi_buffer:
-	kfree(out_obj);
+	ACPI_FREE(out_obj);

 	return ret;
 }
@@ -224,7 +224,7 @@ static int query_buffer(struct pfru_com_buf_info *info,
 	ret = 0;

 free_acpi_buffer:
-	kfree(out_obj);
+	ACPI_FREE(out_obj);

 	return ret;
 }
@@ -385,7 +385,7 @@ static int start_update(int action, struct pfru_device *pfru_dev)
 	ret = 0;

 free_acpi_buffer:
-	kfree(out_obj);
+	ACPI_FREE(out_obj);

 	return ret;
 }
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -967,7 +967,7 @@ struct acpi_device *acpi_add_power_resource(acpi_handle handle)
 	if (acpi_power_get_state(resource, &state_dummy))
 		__acpi_power_on(resource);

-	pr_info("%s [%s]\n", acpi_device_name(device), acpi_device_bid(device));
+	acpi_handle_info(handle, "New power resource\n");

 	result = acpi_tie_acpi_dev(device);
 	if (result)
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -324,7 +324,7 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
 	 * the erratum), but this is known to disrupt certain ISA
 	 * devices thus we take the conservative approach.
 	 */
-	else if (errata.piix4.fdma) {
+	if (errata.piix4.fdma) {
 		acpi_handle_debug(pr->handle,
 				  "C3 not supported on PIIX4 with Type-F DMA\n");
 		return;
@@ -384,8 +384,6 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
 	 * handle BM_RLD is to set it and leave it set.
 	 */
 	acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, 1);
-
-	return;
 }

 static int acpi_cst_latency_cmp(const void *a, const void *b)
@@ -459,7 +457,7 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)

 	lapic_timer_propagate_broadcast(pr);

-	return (working);
+	return working;
 }

 static int acpi_processor_get_cstate_info(struct acpi_processor *pr)
@@ -1134,6 +1132,9 @@ static int acpi_processor_get_lpi_info(struct acpi_processor *pr)
 	status = acpi_get_parent(handle, &pr_ahandle);
 	while (ACPI_SUCCESS(status)) {
 		d = acpi_fetch_acpi_dev(pr_ahandle);
+		if (!d)
+			break;
+
 		handle = pr_ahandle;

 		if (strcmp(acpi_device_hid(d), ACPI_PROCESSOR_CONTAINER_HID))
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -142,6 +142,7 @@ int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
 	pr = per_cpu(processors, cpu);
 	if (!pr || !pr->performance || !pr->performance->state_count)
 		return -ENODEV;
+
 	*limit = pr->performance->states[pr->performance_platform_limit].
 		core_frequency * 1000;
 	return 0;
@@ -201,8 +202,7 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)
 	}

 	pct = (union acpi_object *)buffer.pointer;
-	if (!pct || (pct->type != ACPI_TYPE_PACKAGE)
-	    || (pct->package.count != 2)) {
+	if (!pct || pct->type != ACPI_TYPE_PACKAGE || pct->package.count != 2) {
 		pr_err("Invalid _PCT data\n");
 		result = -EFAULT;
 		goto end;
@@ -214,9 +214,8 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)

 	obj = pct->package.elements[0];

-	if ((obj.type != ACPI_TYPE_BUFFER)
-	    || (obj.buffer.length < sizeof(struct acpi_pct_register))
-	    || (obj.buffer.pointer == NULL)) {
+	if (!obj.buffer.pointer || obj.type != ACPI_TYPE_BUFFER ||
+	    obj.buffer.length < sizeof(struct acpi_pct_register)) {
 		pr_err("Invalid _PCT data (control_register)\n");
 		result = -EFAULT;
 		goto end;
@@ -230,9 +229,8 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)

 	obj = pct->package.elements[1];

-	if ((obj.type != ACPI_TYPE_BUFFER)
-	    || (obj.buffer.length < sizeof(struct acpi_pct_register))
-	    || (obj.buffer.pointer == NULL)) {
+	if (!obj.buffer.pointer || obj.type != ACPI_TYPE_BUFFER ||
+	    obj.buffer.length < sizeof(struct acpi_pct_register)) {
 		pr_err("Invalid _PCT data (status_register)\n");
 		result = -EFAULT;
 		goto end;
@@ -260,8 +258,8 @@ static void amd_fixup_frequency(struct acpi_processor_px *px, int i)
 	if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
 		return;

-	if ((boot_cpu_data.x86 == 0x10 && boot_cpu_data.x86_model < 10)
-	    || boot_cpu_data.x86 == 0x11) {
+	if ((boot_cpu_data.x86 == 0x10 && boot_cpu_data.x86_model < 10) ||
+	    boot_cpu_data.x86 == 0x11) {
 		rdmsr(MSR_AMD_PSTATE_DEF_BASE + index, lo, hi);
 		/*
 		 * MSR C001_0064+:
@@ -300,7 +298,7 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
 	}

 	pss = buffer.pointer;
-	if (!pss || (pss->type != ACPI_TYPE_PACKAGE)) {
+	if (!pss || pss->type != ACPI_TYPE_PACKAGE) {
 		pr_err("Invalid _PSS data\n");
 		result = -EFAULT;
 		goto end;
@@ -353,8 +351,7 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
 		 * Check that ACPI's u64 MHz will be valid as u32 KHz in cpufreq
 		 */
 		if (!px->core_frequency ||
-		    ((u32)(px->core_frequency * 1000) !=
-		     (px->core_frequency * 1000))) {
+		    (u32)(px->core_frequency * 1000) != px->core_frequency * 1000) {
 			pr_err(FW_BUG
 			       "Invalid BIOS _PSS frequency found for processor %d: 0x%llx MHz\n",
 			       pr->id, px->core_frequency);
@@ -456,7 +453,7 @@ int acpi_processor_pstate_control(void)
 int acpi_processor_notify_smm(struct module *calling_module)
 {
 	static int is_done;
-	int result;
+	int result = 0;

 	if (!acpi_processor_cpufreq_init)
 		return -EBUSY;
@@ -464,42 +461,41 @@ int acpi_processor_notify_smm(struct module *calling_module)
 	if (!try_module_get(calling_module))
 		return -EINVAL;

-	/* is_done is set to negative if an error occurred,
-	 * and to postitive if _no_ error occurred, but SMM
-	 * was already notified. This avoids double notification
-	 * which might lead to unexpected results...
+	/*
+	 * is_done is set to negative if an error occurs and to 1 if no error
+	 * occurrs, but SMM has been notified already. This avoids repeated
+	 * notification which might lead to unexpected results.
 	 */
-	if (is_done > 0) {
-		module_put(calling_module);
-		return 0;
-	} else if (is_done < 0) {
-		module_put(calling_module);
-		return is_done;
-	}
+	if (is_done != 0) {
+		if (is_done < 0)
+			result = is_done;

-	is_done = -EIO;
+		goto out_put;
+	}

 	result = acpi_processor_pstate_control();
-	if (!result) {
-		pr_debug("No SMI port or pstate_control\n");
-		module_put(calling_module);
-		return 0;
-	}
-	if (result < 0) {
-		module_put(calling_module);
-		return result;
+	if (result <= 0) {
+		if (result) {
+			is_done = result;
+		} else {
+			pr_debug("No SMI port or pstate_control\n");
+			is_done = 1;
+		}
+		goto out_put;
 	}

-	/* Success. If there's no _PPC, we need to fear nothing, so
-	 * we can allow the cpufreq driver to be rmmod'ed. */
 	is_done = 1;
+	/*
+	 * Success. If there _PPC, unloading the cpufreq driver would be risky,
+	 * so disallow it in that case.
+	 */
+	if (acpi_processor_ppc_in_use)
+		return 0;

-	if (!acpi_processor_ppc_in_use)
-		module_put(calling_module);
-
-	return 0;
+out_put:
+	module_put(calling_module);
+	return result;
 }
-
 EXPORT_SYMBOL(acpi_processor_notify_smm);

 int acpi_processor_get_psd(acpi_handle handle, struct acpi_psd_package *pdomain)
@@ -517,7 +513,7 @@ int acpi_processor_get_psd(acpi_handle handle, struct acpi_psd_package *pdomain)
 	}

 	psd = buffer.pointer;
-	if (!psd || (psd->type != ACPI_TYPE_PACKAGE)) {
+	if (!psd || psd->type != ACPI_TYPE_PACKAGE) {
 		pr_err("Invalid _PSD data\n");
 		result = -EFAULT;
 		goto end;
@@ -532,8 +528,7 @@ int acpi_processor_get_psd(acpi_handle handle, struct acpi_psd_package *pdomain)
 	state.length = sizeof(struct acpi_psd_package);
 	state.pointer = pdomain;

-	status = acpi_extract_package(&(psd->package.elements[0]),
-		&format, &state);
+	status = acpi_extract_package(&(psd->package.elements[0]), &format, &state);
 	if (ACPI_FAILURE(status)) {
 		pr_err("Invalid _PSD data\n");
 		result = -EFAULT;
@@ -716,9 +711,8 @@ int acpi_processor_preregister_performance(
 }
 EXPORT_SYMBOL(acpi_processor_preregister_performance);

-int
-acpi_processor_register_performance(struct acpi_processor_performance
-				    *performance, unsigned int cpu)
+int acpi_processor_register_performance(struct acpi_processor_performance
+					*performance, unsigned int cpu)
 {
 	struct acpi_processor *pr;

@@ -751,7 +745,6 @@ acpi_processor_register_performance(struct acpi_processor_performance
 	mutex_unlock(&performance_mutex);
 	return 0;
 }
-
 EXPORT_SYMBOL(acpi_processor_register_performance);

 void acpi_processor_unregister_performance(unsigned int cpu)
@@ -761,18 +754,15 @@ void acpi_processor_unregister_performance(unsigned int cpu)
 	mutex_lock(&performance_mutex);

 	pr = per_cpu(processors, cpu);
-	if (!pr) {
-		mutex_unlock(&performance_mutex);
-		return;
-	}
+	if (!pr)
+		goto unlock;

 	if (pr->performance)
 		kfree(pr->performance->states);
+
 	pr->performance = NULL;

+unlock:
 	mutex_unlock(&performance_mutex);
-
-	return;
 }
-
 EXPORT_SYMBOL(acpi_processor_unregister_performance);
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -50,7 +50,7 @@ static int __acpi_processor_set_throttling(struct acpi_processor *pr,

 static int acpi_processor_update_tsd_coord(void)
 {
-	int count, count_target;
+	int count_target;
 	int retval = 0;
 	unsigned int i, j;
 	cpumask_var_t covered_cpus;
@@ -107,7 +107,6 @@ static int acpi_processor_update_tsd_coord(void)

 		/* Validate the Domain info */
 		count_target = pdomain->num_processors;
-		count = 1;

 		for_each_possible_cpu(j) {
 			if (i == j)
@@ -140,7 +139,6 @@ static int acpi_processor_update_tsd_coord(void)

 			cpumask_set_cpu(j, covered_cpus);
 			cpumask_set_cpu(j, pthrottling->shared_cpu_map);
-			count++;
 		}
 		for_each_possible_cpu(j) {
 			if (i == j)
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -96,7 +96,7 @@ struct acpi_sbs {

 #define to_acpi_sbs(x) power_supply_get_drvdata(x)

-static int acpi_sbs_remove(struct acpi_device *device);
+static void acpi_sbs_remove(struct acpi_device *device);
 static int acpi_battery_get_state(struct acpi_battery *battery);

 static inline int battery_scale(int log)
@@ -664,16 +664,16 @@ static int acpi_sbs_add(struct acpi_device *device)
 	return result;
 }

-static int acpi_sbs_remove(struct acpi_device *device)
+static void acpi_sbs_remove(struct acpi_device *device)
 {
 	struct acpi_sbs *sbs;
 	int id;

 	if (!device)
-		return -EINVAL;
+		return;
 	sbs = acpi_driver_data(device);
 	if (!sbs)
-		return -EINVAL;
+		return;
 	mutex_lock(&sbs->lock);
 	acpi_smbus_unregister_callback(sbs->hc);
 	for (id = 0; id < MAX_SBS_BAT; ++id)
@@ -682,7 +682,6 @@ static int acpi_sbs_remove(struct acpi_device *device)
 	mutex_unlock(&sbs->lock);
 	mutex_destroy(&sbs->lock);
 	kfree(sbs);
-	return 0;
 }

 #ifdef CONFIG_PM_SLEEP
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -30,7 +30,7 @@ struct acpi_smb_hc {
 };

 static int acpi_smbus_hc_add(struct acpi_device *device);
-static int acpi_smbus_hc_remove(struct acpi_device *device);
+static void acpi_smbus_hc_remove(struct acpi_device *device);

 static const struct acpi_device_id sbs_device_ids[] = {
 	{"ACPI0001", 0},
@@ -280,19 +280,18 @@ static int acpi_smbus_hc_add(struct acpi_device *device)

 extern void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit);

-static int acpi_smbus_hc_remove(struct acpi_device *device)
+static void acpi_smbus_hc_remove(struct acpi_device *device)
 {
 	struct acpi_smb_hc *hc;

 	if (!device)
-		return -EINVAL;
+		return;

 	hc = acpi_driver_data(device);
 	acpi_ec_remove_query_handler(hc->ec, hc->query_bit);
 	acpi_os_wait_events_complete();
 	kfree(hc);
 	device->driver_data = NULL;
-	return 0;
 }

 module_acpi_driver(acpi_smb_hc_driver);
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -30,7 +30,7 @@ extern struct acpi_device *acpi_root;
 #define ACPI_BUS_HID			"LNXSYBUS"
 #define ACPI_BUS_DEVICE_NAME		"System Bus"

-#define INVALID_ACPI_HANDLE	((acpi_handle)empty_zero_page)
+#define INVALID_ACPI_HANDLE	((acpi_handle)ZERO_PAGE(0))

 static const char *dummy_hid = "device";

--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -9,6 +9,7 @@
 #include <linux/bitmap.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/kstrtox.h>
 #include <linux/moduleparam.h>

 #include "internal.h"
@@ -197,7 +198,7 @@ static int param_set_trace_method_name(const char *val,

 static int param_get_trace_method_name(char *buffer, const struct kernel_param *kp)
 {
-	return scnprintf(buffer, PAGE_SIZE, "%s\n", acpi_gbl_trace_method_name);
+	return sysfs_emit(buffer, "%s\n", acpi_gbl_trace_method_name);
 }

 static const struct kernel_param_ops param_ops_trace_method = {
@@ -992,7 +993,7 @@ static ssize_t force_remove_store(struct kobject *kobj,
 	bool val;
 	int ret;

-	ret = strtobool(buf, &val);
+	ret = kstrtobool(buf, &val);
 	if (ret < 0)
 		return ret;

--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -210,6 +210,16 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
 		}
 		break;

+	case ACPI_MADT_TYPE_CORE_PIC:
+		{
+			struct acpi_madt_core_pic *p = (struct acpi_madt_core_pic *)header;
+
+			pr_debug("CORE PIC (processor_id[0x%02x] core_id[0x%02x] %s)\n",
+				 p->processor_id, p->core_id,
+				 (p->flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
+		}
+		break;
+
 	default:
 		pr_warn("Found unsupported MADT entry (type = 0x%x)\n",
 			header->type);
@@ -838,12 +848,11 @@ acpi_status acpi_os_table_override(struct acpi_table_header *existing_table,
 /*
 * acpi_locate_initial_tables()
 *
- * find RSDP, find and checksum SDT/XSDT.
- * checksum all tables, print SDT/XSDT
+ * Get the RSDP, then find and checksum all the ACPI tables.
 *
- * result: sdt_entry[] is initialized
+ * result: initial_tables[] is initialized, and points to
+ * a list of ACPI tables.
 */
-
 int __init acpi_locate_initial_tables(void)
 {
 	acpi_status status;
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -74,7 +74,7 @@ MODULE_PARM_DESC(psv, "Disable or override all passive trip points.");
 static struct workqueue_struct *acpi_thermal_pm_queue;

 static int acpi_thermal_add(struct acpi_device *device);
-static int acpi_thermal_remove(struct acpi_device *device);
+static void acpi_thermal_remove(struct acpi_device *device);
 static void acpi_thermal_notify(struct acpi_device *device, u32 event);

 static const struct acpi_device_id  thermal_device_ids[] = {
@@ -291,7 +291,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 					  "Found critical threshold [%lu]\n",
 					  tz->trips.critical.temperature);
 		}
-		if (tz->trips.critical.flags.valid == 1) {
+		if (tz->trips.critical.flags.valid) {
 			if (crt == -1) {
 				tz->trips.critical.flags.valid = 0;
 			} else if (crt > 0) {
@@ -1059,19 +1059,18 @@ static int acpi_thermal_add(struct acpi_device *device)
 	return result;
 }

-static int acpi_thermal_remove(struct acpi_device *device)
+static void acpi_thermal_remove(struct acpi_device *device)
 {
 	struct acpi_thermal *tz;

 	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
+		return;

 	flush_workqueue(acpi_thermal_pm_queue);
 	tz = acpi_driver_data(device);

 	acpi_thermal_unregister_thermal_zone(tz);
 	kfree(tz);
-	return 0;
 }

 #ifdef CONFIG_PM_SLEEP
--- a/drivers/acpi/tiny-power-button.c
+++ b/drivers/acpi/tiny-power-button.c
@@ -19,11 +19,15 @@ static const struct acpi_device_id tiny_power_button_device_ids[] = {
 };
 MODULE_DEVICE_TABLE(acpi, tiny_power_button_device_ids);

-static int acpi_noop_add_remove(struct acpi_device *device)
+static int acpi_noop_add(struct acpi_device *device)
 {
 	return 0;
 }

+static void acpi_noop_remove(struct acpi_device *device)
+{
+}
+
 static void acpi_tiny_power_button_notify(struct acpi_device *device, u32 event)
 {
 	kill_cad_pid(power_signal, 1);
@@ -34,8 +38,8 @@ static struct acpi_driver acpi_tiny_power_button_driver = {
 	.class = "tiny-power-button",
 	.ids = tiny_power_button_device_ids,
 	.ops = {
-		.add = acpi_noop_add_remove,
-		.remove = acpi_noop_add_remove,
+		.add = acpi_noop_add,
+		.remove = acpi_noop_remove,
 		.notify = acpi_tiny_power_button_notify,
 	},
 };
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -132,6 +132,10 @@ static int video_detect_force_none(const struct dmi_system_id *d)
 }

 static const struct dmi_system_id video_detect_dmi_table[] = {
+	/*
+	 * Models which should use the vendor backlight interface,
+	 * because of broken ACPI video backlight control.
+	 */
 	{
 	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1128309 */
 	 .callback = video_detect_force_vendor,
@@ -166,6 +170,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		},
 	},
 	{
+	 /* https://bugs.launchpad.net/bugs/1000146 */
 	 .callback = video_detect_force_vendor,
 	 /* Asus X101CH */
 	 .matches = {
@@ -190,6 +195,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		},
 	},
 	{
+	 /* https://bugs.launchpad.net/bugs/1000146 */
 	 .callback = video_detect_force_vendor,
 	 /* Asus 1015CX */
 	 .matches = {
@@ -197,14 +203,6 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
 		},
 	},
-	{
-	 .callback = video_detect_force_vendor,
-	 /* GIGABYTE GB-BXBT-2807 */
-	 .matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"),
-		},
-	},
 	{
 	 .callback = video_detect_force_vendor,
 	 /* Samsung N150/N210/N220 */
@@ -232,14 +230,6 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
 		},
 	},
-	{
-	 .callback = video_detect_force_vendor,
-	 /* Sony VPCEH3U1E */
-	 .matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
-		},
-	},
 	{
 	 .callback = video_detect_force_vendor,
 	 /* Xiaomi Mi Pad 2 */
@@ -249,6 +239,19 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		},
 	},

+	/*
+	 * Models which should use the vendor backlight interface,
+	 * because of broken native backlight control.
+	 */
+	{
+	 .callback = video_detect_force_vendor,
+	 /* Sony Vaio PCG-FRV35 */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"),
+		},
+	},
+
 	/*
 	 * Toshiba models with Transflective display, these need to use
 	 * the toshiba_acpi vendor driver for proper Transflective handling.
@@ -400,8 +403,8 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
 		},
 	},
-	/* https://bugs.launchpad.net/bugs/1894667 */
 	{
+	 /* https://bugs.launchpad.net/bugs/1894667 */
 	 .callback = video_detect_force_video,
 	 /* HP 635 Notebook */
 	 .matches = {
@@ -609,6 +612,23 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_BOARD_NAME, "N250P"),
 		},
 	},
+	{
+	 /* https://bugzilla.kernel.org/show_bug.cgi?id=202401 */
+	 .callback = video_detect_force_native,
+	 /* Sony Vaio VPCEH3U1E */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
+		},
+	},
+	{
+	 .callback = video_detect_force_native,
+	 /* Sony Vaio VPCY11S1E */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "VPCY11S1E"),
+		},
+	},

 	/*
 	 * These Toshibas have a broken acpi-video interface for brightness
@@ -671,6 +691,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"),
 		},
 	},
+	{
+	 .callback = video_detect_force_none,
+	 /* GIGABYTE GB-BXBT-2807 */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"),
+		},
+	},
 	{
 	 .callback = video_detect_force_none,
 	 /* MSI MS-7721 */
@@ -687,6 +715,16 @@ static bool google_cros_ec_present(void)
 	return acpi_dev_found("GOOG0004") || acpi_dev_found("GOOG000C");
 }

+/*
+ * Windows 8 and newer no longer use the ACPI video interface, so it often
+ * does not work. So on win8+ systems prefer native brightness control.
+ * Chromebooks should always prefer native backlight control.
+ */
+static bool prefer_native_over_acpi_video(void)
+{
+	return acpi_osi_is_win8() || google_cros_ec_present();
+}
+
 /*
 * Determine which type of backlight interface to use on this system,
 * First check cmdline, then dmi quirks, then do autodetect.
@@ -732,28 +770,16 @@ static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native)
 	if (apple_gmux_present())
 		return acpi_backlight_apple_gmux;

-	/* Chromebooks should always prefer native backlight control. */
-	if (google_cros_ec_present() && native_available)
+	/* Use ACPI video if available, except when native should be preferred. */
+	if ((video_caps & ACPI_VIDEO_BACKLIGHT) &&
+	     !(native_available && prefer_native_over_acpi_video()))
+		return acpi_backlight_video;
+
+	/* Use native if available */
+	if (native_available)
 		return acpi_backlight_native;

-	/* On systems with ACPI video use either native or ACPI video. */
-	if (video_caps & ACPI_VIDEO_BACKLIGHT) {
-		/*
-		 * Windows 8 and newer no longer use the ACPI video interface,
-		 * so it often does not work. If the ACPI tables are written
-		 * for win8 and native brightness ctl is available, use that.
-		 *
-		 * The native check deliberately is inside the if acpi-video
-		 * block on older devices without acpi-video support native
-		 * is usually not the best choice.
-		 */
-		if (acpi_osi_is_win8() && native_available)
-			return acpi_backlight_native;
-		else
-			return acpi_backlight_video;
-	}
-
-	/* No ACPI video (old hw), use vendor specific fw methods. */
+	/* No ACPI video/native (old hw), use vendor specific fw methods. */
 	return acpi_backlight_vendor;
 }

@@ -765,18 +791,6 @@ EXPORT_SYMBOL(acpi_video_get_backlight_type);

 bool acpi_video_backlight_use_native(void)
 {
-	/*
-	 * Call __acpi_video_get_backlight_type() to let it know that
-	 * a native backlight is available.
-	 */
-	__acpi_video_get_backlight_type(true);
-
-	/*
-	 * For now just always return true. There is a whole bunch of laptop
-	 * models where (video_caps & ACPI_VIDEO_BACKLIGHT) is false causing
-	 * __acpi_video_get_backlight_type() to return vendor, while these
-	 * models only have a native backlight control.
-	 */
-	return true;
+	return __acpi_video_get_backlight_type(true) == acpi_backlight_native;
 }
 EXPORT_SYMBOL(acpi_video_backlight_use_native);
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -308,7 +308,7 @@ static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = {
 					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
 	},
 	{
-		/* Lenovo Yoga Tablet 1050F/L */
+		/* Lenovo Yoga Tablet 2 1050F/L */
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
@@ -319,6 +319,27 @@ static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = {
 		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
 					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
 	},
+	{
+		/* Lenovo Yoga Tab 3 Pro X90F */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
+		},
+		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
+					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
+	},
+	{
+		/* Medion Lifetab S10346 */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+			/* Way too generic, also match on BIOS data */
+			DMI_MATCH(DMI_BIOS_DATE, "10/22/2015"),
+		},
+		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
+					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
+	},
 	{
 		/* Nextbook Ares 8 */
 		.matches = {
@@ -348,6 +369,7 @@ static const struct acpi_device_id i2c_acpi_known_good_ids[] = {
 	{ "10EC5640", 0 }, /* RealTek ALC5640 audio codec */
 	{ "INT33F4", 0 },  /* X-Powers AXP288 PMIC */
 	{ "INT33FD", 0 },  /* Intel Crystal Cove PMIC */
+	{ "INT34D3", 0 },  /* Intel Whiskey Cove PMIC */
 	{ "NPCE69A", 0 },  /* Asus Transformer keyboard dock */
 	{}
 };
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -22,7 +22,7 @@ obj-$(CONFIG_REGMAP)	+= regmap/
 obj-$(CONFIG_SOC_BUS) += soc.o
 obj-$(CONFIG_PINCTRL) += pinctrl.o
 obj-$(CONFIG_DEV_COREDUMP) += devcoredump.o
-obj-$(CONFIG_GENERIC_MSI_IRQ_DOMAIN) += platform-msi.o
+obj-$(CONFIG_GENERIC_MSI_IRQ) += platform-msi.o
 obj-$(CONFIG_GENERIC_ARCH_TOPOLOGY) += arch_topology.o
 obj-$(CONFIG_GENERIC_ARCH_NUMA) += arch_numa.o
 obj-$(CONFIG_ACPI) += physical_location.o
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -213,7 +213,7 @@ int platform_msi_domain_alloc_irqs(struct device *dev, unsigned int nvec,
 	if (err)
 		return err;

-	err = msi_domain_alloc_irqs(dev->msi.domain, dev, nvec);
+	err = msi_domain_alloc_irqs_range(dev, MSI_DEFAULT_DOMAIN, 0, nvec - 1);
 	if (err)
 		platform_msi_free_priv_data(dev);

@@ -227,7 +227,7 @@ EXPORT_SYMBOL_GPL(platform_msi_domain_alloc_irqs);
 */
 void platform_msi_domain_free_irqs(struct device *dev)
 {
-	msi_domain_free_irqs(dev->msi.domain, dev);
+	msi_domain_free_irqs_all(dev, MSI_DEFAULT_DOMAIN);
 	platform_msi_free_priv_data(dev);
 }
 EXPORT_SYMBOL_GPL(platform_msi_domain_free_irqs);
@@ -325,7 +325,7 @@ void platform_msi_device_domain_free(struct irq_domain *domain, unsigned int vir

 	msi_lock_descs(data->dev);
 	irq_domain_free_irqs_common(domain, virq, nr_irqs);
-	msi_free_msi_descs_range(data->dev, MSI_DESC_ALL, virq, virq + nr_irqs - 1);
+	msi_free_msi_descs_range(data->dev, virq, virq + nr_irqs - 1);
 	msi_unlock_descs(data->dev);
 }

--- a/drivers/bus/fsl-mc/Kconfig
+++ b/drivers/bus/fsl-mc/Kconfig
@@ -8,7 +8,7 @@
 config FSL_MC_BUS
 	bool "QorIQ DPAA2 fsl-mc bus driver"
 	depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86_LOCAL_APIC || PPC)))
-	select GENERIC_MSI_IRQ_DOMAIN
+	select GENERIC_MSI_IRQ
 	help
 	  Driver to enable the bus infrastructure for the QorIQ DPAA2
 	  architecture.  The fsl-mc bus driver handles discovery of
--- a/drivers/bus/fsl-mc/dprc-driver.c
+++ b/drivers/bus/fsl-mc/dprc-driver.c
@@ -11,7 +11,6 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
-#include <linux/msi.h>
 #include <linux/fsl/mc.h>

 #include "fsl-mc-private.h"
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -17,7 +17,6 @@
 #include <linux/slab.h>
 #include <linux/limits.h>
 #include <linux/bitops.h>
-#include <linux/msi.h>
 #include <linux/dma-mapping.h>
 #include <linux/acpi.h>
 #include <linux/iommu.h>
--- a/drivers/bus/fsl-mc/fsl-mc-msi.c
+++ b/drivers/bus/fsl-mc/fsl-mc-msi.c
@@ -213,21 +213,8 @@ struct irq_domain *fsl_mc_find_msi_domain(struct device *dev)

 int fsl_mc_msi_domain_alloc_irqs(struct device *dev,  unsigned int irq_count)
 {
-	struct irq_domain *msi_domain;
-	int error;
+	int error = msi_setup_device_data(dev);

-	msi_domain = dev_get_msi_domain(dev);
-	if (!msi_domain)
-		return -EINVAL;
-
-	error = msi_setup_device_data(dev);
-	if (error)
-		return error;
-
-	msi_lock_descs(dev);
-	if (msi_first_desc(dev, MSI_DESC_ALL))
-		error = -EINVAL;
-	msi_unlock_descs(dev);
 	if (error)
 		return error;

@@ -235,7 +222,7 @@ int fsl_mc_msi_domain_alloc_irqs(struct device *dev,  unsigned int irq_count)
 	 * NOTE: Calling this function will trigger the invocation of the
 	 * its_fsl_mc_msi_prepare() callback
 	 */
-	error = msi_domain_alloc_irqs(msi_domain, dev, irq_count);
+	error = msi_domain_alloc_irqs_range(dev, MSI_DEFAULT_DOMAIN, 0, irq_count - 1);

 	if (error)
 		dev_err(dev, "Failed to allocate IRQs\n");
@@ -244,11 +231,5 @@ int fsl_mc_msi_domain_alloc_irqs(struct device *dev,  unsigned int irq_count)

 void fsl_mc_msi_domain_free_irqs(struct device *dev)
 {
-	struct irq_domain *msi_domain;
-
-	msi_domain = dev_get_msi_domain(dev);
-	if (!msi_domain)
-		return;
-
-	msi_domain_free_irqs(msi_domain, dev);
+	msi_domain_free_irqs_all(dev, MSI_DEFAULT_DOMAIN);
 }
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -1123,10 +1123,9 @@ static int sonypi_acpi_add(struct acpi_device *device)
 	return 0;
 }

-static int sonypi_acpi_remove(struct acpi_device *device)
+static void sonypi_acpi_remove(struct acpi_device *device)
 {
 	sonypi_acpi_device = NULL;
-	return 0;
 }

 static const struct acpi_device_id sonypi_device_ids[] = {
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -713,14 +713,12 @@ static int crb_acpi_add(struct acpi_device *device)
 	return tpm_chip_register(chip);
 }

-static int crb_acpi_remove(struct acpi_device *device)
+static void crb_acpi_remove(struct acpi_device *device)
 {
 	struct device *dev = &device->dev;
 	struct tpm_chip *chip = dev_get_drvdata(dev);

 	tpm_chip_unregister(chip);
-
-	return 0;
 }

 static const struct dev_pm_ops crb_pm = {
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -462,7 +462,7 @@ config MV_XOR_V2
 	select DMA_ENGINE
 	select DMA_ENGINE_RAID
 	select ASYNC_TX_ENABLE_CHANNEL_SWITCH
-	select GENERIC_MSI_IRQ_DOMAIN
+	select GENERIC_MSI_IRQ
 	help
 	  Enable support for the Marvell version 2 XOR engine.

--- a/drivers/dma/qcom/hidma.c
+++ b/drivers/dma/qcom/hidma.c
@@ -610,7 +610,7 @@ static irqreturn_t hidma_chirq_handler(int chirq, void *arg)
 	return hidma_ll_inthandler(chirq, lldev);
 }

-#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+#ifdef CONFIG_GENERIC_MSI_IRQ
 static irqreturn_t hidma_chirq_handler_msi(int chirq, void *arg)
 {
 	struct hidma_lldev **lldevp = arg;
@@ -671,7 +671,7 @@ static int hidma_sysfs_init(struct hidma_dev *dev)
 	return device_create_file(dev->ddev.dev, dev->chid_attrs);
 }

-#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+#ifdef CONFIG_GENERIC_MSI_IRQ
 static void hidma_write_msi_msg(struct msi_desc *desc, struct msi_msg *msg)
 {
 	struct device *dev = msi_desc_to_dev(desc);
@@ -687,7 +687,7 @@ static void hidma_write_msi_msg(struct msi_desc *desc, struct msi_msg *msg)

 static void hidma_free_msis(struct hidma_dev *dmadev)
 {
-#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+#ifdef CONFIG_GENERIC_MSI_IRQ
 	struct device *dev = dmadev->ddev.dev;
 	int i, virq;

@@ -704,7 +704,7 @@ static void hidma_free_msis(struct hidma_dev *dmadev)
 static int hidma_request_msi(struct hidma_dev *dmadev,
 			     struct platform_device *pdev)
 {
-#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+#ifdef CONFIG_GENERIC_MSI_IRQ
 	int rc, i, virq;

 	rc = platform_msi_domain_alloc_irqs(&pdev->dev, HIDMA_MSI_INTS,
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -37,6 +37,7 @@
 #include <linux/dma-map-ops.h>
 #include <linux/pci.h>
 #include <clocksource/hyperv_timer.h>
+#include <asm/mshyperv.h>
 #include "hyperv_vmbus.h"

 struct vmbus_dynid {
@@ -2240,7 +2241,7 @@ static acpi_status vmbus_walk_resources(struct acpi_resource *res, void *ctx)
 	return AE_OK;
 }

-static int vmbus_acpi_remove(struct acpi_device *device)
+static void vmbus_acpi_remove(struct acpi_device *device)
 {
 	struct resource *cur_res;
 	struct resource *next_res;
@@ -2257,8 +2258,6 @@ static int vmbus_acpi_remove(struct acpi_device *device)
 			kfree(cur_res);
 		}
 	}
-
-	return 0;
 }

 static void vmbus_reserve_fb(void)
--- a/drivers/hwmon/acpi_power_meter.c
+++ b/drivers/hwmon/acpi_power_meter.c
@@ -910,12 +910,12 @@ static int acpi_power_meter_add(struct acpi_device *device)
 	return res;
 }

-static int acpi_power_meter_remove(struct acpi_device *device)
+static void acpi_power_meter_remove(struct acpi_device *device)
 {
 	struct acpi_power_meter_resource *resource;

 	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
+		return;

 	resource = acpi_driver_data(device);
 	hwmon_device_unregister(resource->hwmon_dev);
@@ -924,7 +924,6 @@ static int acpi_power_meter_remove(struct acpi_device *device)
 	free_capabilities(resource);

 	kfree(resource);
-	return 0;
 }

 static int acpi_power_meter_resume(struct device *dev)
--- a/drivers/hwmon/asus_atk0110.c
+++ b/drivers/hwmon/asus_atk0110.c
@@ -187,7 +187,7 @@ struct atk_acpi_input_buf {
 };

 static int atk_add(struct acpi_device *device);
-static int atk_remove(struct acpi_device *device);
+static void atk_remove(struct acpi_device *device);
 static void atk_print_sensor(struct atk_data *data, union acpi_object *obj);
 static int atk_read_value(struct atk_sensor_data *sensor, u64 *value);

@@ -1344,7 +1344,7 @@ static int atk_add(struct acpi_device *device)
 	return err;
 }

-static int atk_remove(struct acpi_device *device)
+static void atk_remove(struct acpi_device *device)
 {
 	struct atk_data *data = device->driver_data;
 	dev_dbg(&device->dev, "removing...\n");
@@ -1359,8 +1359,6 @@ static int atk_remove(struct acpi_device *device)
 		if (atk_ec_ctl(data, 0))
 			dev_err(&device->dev, "Failed to disable EC\n");
 	}
-
-	return 0;
 }

 static int __init atk0110_init(void)
--- a/drivers/input/misc/atlas_btns.c
+++ b/drivers/input/misc/atlas_btns.c
@@ -106,7 +106,7 @@ static int atlas_acpi_button_add(struct acpi_device *device)
 	return err;
 }

-static int atlas_acpi_button_remove(struct acpi_device *device)
+static void atlas_acpi_button_remove(struct acpi_device *device)
 {
 	acpi_status status;

@@ -116,8 +116,6 @@ static int atlas_acpi_button_remove(struct acpi_device *device)
 		pr_err("error removing addr spc handler\n");

 	input_unregister_device(input_dev);
-
-	return 0;
 }

 static const struct acpi_device_id atlas_device_ids[] = {
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -389,7 +389,7 @@ config ARM_SMMU_V3
 	depends on ARM64
 	select IOMMU_API
 	select IOMMU_IO_PGTABLE_LPAE
-	select GENERIC_MSI_IRQ_DOMAIN
+	select GENERIC_MSI_IRQ
 	help
 	  Support for implementations of the ARM System MMU architecture
 	  version 3 providing translation support to a PCIe root complex.
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -734,7 +734,6 @@ struct amd_iommu {
 	u8 max_counters;
 #ifdef CONFIG_IRQ_REMAP
 	struct irq_domain *ir_domain;
-	struct irq_domain *msi_domain;

 	struct amd_irte_ops *irte_ops;
 #endif
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -812,10 +812,10 @@ static void
 amd_iommu_set_pci_msi_domain(struct device *dev, struct amd_iommu *iommu)
 {
 	if (!irq_remapping_enabled || !dev_is_pci(dev) ||
-	    pci_dev_has_special_msi_domain(to_pci_dev(dev)))
+	    !pci_dev_has_default_msi_parent_domain(to_pci_dev(dev)))
 		return;

-	dev_set_msi_domain(dev, iommu->msi_domain);
+	dev_set_msi_domain(dev, iommu->ir_domain);
 }

 #else /* CONFIG_IRQ_REMAP */
@@ -3294,17 +3294,9 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,

 	if (!info)
 		return -EINVAL;
-	if (nr_irqs > 1 && info->type != X86_IRQ_ALLOC_TYPE_PCI_MSI &&
-	    info->type != X86_IRQ_ALLOC_TYPE_PCI_MSIX)
+	if (nr_irqs > 1 && info->type != X86_IRQ_ALLOC_TYPE_PCI_MSI)
 		return -EINVAL;

-	/*
-	 * With IRQ remapping enabled, don't need contiguous CPU vectors
-	 * to support multiple MSI interrupts.
-	 */
-	if (info->type == X86_IRQ_ALLOC_TYPE_PCI_MSI)
-		info->flags &= ~X86_IRQ_ALLOC_CONTIGUOUS_VECTORS;
-
 	sbdf = get_devid(info);
 	if (sbdf < 0)
 		return -EINVAL;
@@ -3656,6 +3648,21 @@ static struct irq_chip amd_ir_chip = {
 	.irq_compose_msi_msg	= ir_compose_msi_msg,
 };

+static const struct msi_parent_ops amdvi_msi_parent_ops = {
+	.supported_flags	= X86_VECTOR_MSI_FLAGS_SUPPORTED |
+				  MSI_FLAG_MULTI_PCI_MSI |
+				  MSI_FLAG_PCI_IMS,
+	.prefix			= "IR-",
+	.init_dev_msi_info	= msi_parent_init_dev_msi_info,
+};
+
+static const struct msi_parent_ops virt_amdvi_msi_parent_ops = {
+	.supported_flags	= X86_VECTOR_MSI_FLAGS_SUPPORTED |
+				  MSI_FLAG_MULTI_PCI_MSI,
+	.prefix			= "vIR-",
+	.init_dev_msi_info	= msi_parent_init_dev_msi_info,
+};
+
 int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
 {
 	struct fwnode_handle *fn;
@@ -3663,16 +3670,21 @@ int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
 	fn = irq_domain_alloc_named_id_fwnode("AMD-IR", iommu->index);
 	if (!fn)
 		return -ENOMEM;
-	iommu->ir_domain = irq_domain_create_tree(fn, &amd_ir_domain_ops, iommu);
+	iommu->ir_domain = irq_domain_create_hierarchy(arch_get_ir_parent_domain(), 0, 0,
+						       fn, &amd_ir_domain_ops, iommu);
 	if (!iommu->ir_domain) {
 		irq_domain_free_fwnode(fn);
 		return -ENOMEM;
 	}

-	iommu->ir_domain->parent = arch_get_ir_parent_domain();
-	iommu->msi_domain = arch_create_remap_msi_irq_domain(iommu->ir_domain,
-							     "AMD-IR-MSI",
-							     iommu->index);
+	irq_domain_update_bus_token(iommu->ir_domain,  DOMAIN_BUS_AMDVI);
+	iommu->ir_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
+
+	if (amd_iommu_np_cache)
+		iommu->ir_domain->msi_parent_ops = &virt_amdvi_msi_parent_ops;
+	else
+		iommu->ir_domain->msi_parent_ops = &amdvi_msi_parent_ops;
+
 	return 0;
 }

--- a/drivers/iommu/intel/iommu.h
+++ b/drivers/iommu/intel/iommu.h
@@ -600,7 +600,6 @@ struct intel_iommu {
 #ifdef CONFIG_IRQ_REMAP
 	struct ir_table *ir_table;	/* Interrupt remapping info */
 	struct irq_domain *ir_domain;
-	struct irq_domain *ir_msi_domain;
 #endif
 	struct iommu_device iommu;  /* IOMMU core code handle */
 	int		node;
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -82,6 +82,7 @@ static const struct irq_domain_ops intel_ir_domain_ops;

 static void iommu_disable_irq_remapping(struct intel_iommu *iommu);
 static int __init parse_ioapics_under_ir(void);
+static const struct msi_parent_ops dmar_msi_parent_ops, virt_dmar_msi_parent_ops;

 static bool ir_pre_enabled(struct intel_iommu *iommu)
 {
@@ -230,7 +231,7 @@ static struct irq_domain *map_dev_to_ir(struct pci_dev *dev)
 {
 	struct dmar_drhd_unit *drhd = dmar_find_matched_drhd_unit(dev);

-	return drhd ? drhd->iommu->ir_msi_domain : NULL;
+	return drhd ? drhd->iommu->ir_domain : NULL;
 }

 static int clear_entries(struct irq_2_iommu *irq_iommu)
@@ -573,10 +574,14 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu)
 		pr_err("IR%d: failed to allocate irqdomain\n", iommu->seq_id);
 		goto out_free_fwnode;
 	}
-	iommu->ir_msi_domain =
-		arch_create_remap_msi_irq_domain(iommu->ir_domain,
-						 "INTEL-IR-MSI",
-						 iommu->seq_id);
+
+	irq_domain_update_bus_token(iommu->ir_domain,  DOMAIN_BUS_DMAR);
+	iommu->ir_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
+
+	if (cap_caching_mode(iommu->cap))
+		iommu->ir_domain->msi_parent_ops = &virt_dmar_msi_parent_ops;
+	else
+		iommu->ir_domain->msi_parent_ops = &dmar_msi_parent_ops;

 	ir_table->base = page_address(pages);
 	ir_table->bitmap = bitmap;
@@ -620,9 +625,6 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu)
 	return 0;

 out_free_ir_domain:
-	if (iommu->ir_msi_domain)
-		irq_domain_remove(iommu->ir_msi_domain);
-	iommu->ir_msi_domain = NULL;
 	irq_domain_remove(iommu->ir_domain);
 	iommu->ir_domain = NULL;
 out_free_fwnode:
@@ -644,13 +646,6 @@ static void intel_teardown_irq_remapping(struct intel_iommu *iommu)
 	struct fwnode_handle *fn;

 	if (iommu && iommu->ir_table) {
-		if (iommu->ir_msi_domain) {
-			fn = iommu->ir_msi_domain->fwnode;
-
-			irq_domain_remove(iommu->ir_msi_domain);
-			irq_domain_free_fwnode(fn);
-			iommu->ir_msi_domain = NULL;
-		}
 		if (iommu->ir_domain) {
 			fn = iommu->ir_domain->fwnode;

@@ -1107,7 +1102,7 @@ static int reenable_irq_remapping(int eim)
 */
 void intel_irq_remap_add_device(struct dmar_pci_notify_info *info)
 {
-	if (!irq_remapping_enabled || pci_dev_has_special_msi_domain(info->dev))
+	if (!irq_remapping_enabled || !pci_dev_has_default_msi_parent_domain(info->dev))
 		return;

 	dev_set_msi_domain(&info->dev->dev, map_dev_to_ir(info->dev));
@@ -1334,17 +1329,9 @@ static int intel_irq_remapping_alloc(struct irq_domain *domain,

 	if (!info || !iommu)
 		return -EINVAL;
-	if (nr_irqs > 1 && info->type != X86_IRQ_ALLOC_TYPE_PCI_MSI &&
-	    info->type != X86_IRQ_ALLOC_TYPE_PCI_MSIX)
+	if (nr_irqs > 1 && info->type != X86_IRQ_ALLOC_TYPE_PCI_MSI)
 		return -EINVAL;

-	/*
-	 * With IRQ remapping enabled, don't need contiguous CPU vectors
-	 * to support multiple MSI interrupts.
-	 */
-	if (info->type == X86_IRQ_ALLOC_TYPE_PCI_MSI)
-		info->flags &= ~X86_IRQ_ALLOC_CONTIGUOUS_VECTORS;
-
 	ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, arg);
 	if (ret < 0)
 		return ret;
@@ -1445,6 +1432,21 @@ static const struct irq_domain_ops intel_ir_domain_ops = {
 	.deactivate = intel_irq_remapping_deactivate,
 };

+static const struct msi_parent_ops dmar_msi_parent_ops = {
+	.supported_flags	= X86_VECTOR_MSI_FLAGS_SUPPORTED |
+				  MSI_FLAG_MULTI_PCI_MSI |
+				  MSI_FLAG_PCI_IMS,
+	.prefix			= "IR-",
+	.init_dev_msi_info	= msi_parent_init_dev_msi_info,
+};
+
+static const struct msi_parent_ops virt_dmar_msi_parent_ops = {
+	.supported_flags	= X86_VECTOR_MSI_FLAGS_SUPPORTED |
+				  MSI_FLAG_MULTI_PCI_MSI,
+	.prefix			= "vIR-",
+	.init_dev_msi_info	= msi_parent_init_dev_msi_info,
+};
+
 /*
 * Support of Interrupt Remapping Unit Hotplug
 */
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -9,7 +9,6 @@
 #include <linux/iommu.h>
 #include <linux/limits.h>
 #include <linux/module.h>
-#include <linux/msi.h>
 #include <linux/of.h>
 #include <linux/of_iommu.h>
 #include <linux/of_pci.h>
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -38,7 +38,7 @@ config ARM_GIC_V3

 config ARM_GIC_V3_ITS
 	bool
-	select GENERIC_MSI_IRQ_DOMAIN
+	select GENERIC_MSI_IRQ
 	default ARM_GIC_V3

 config ARM_GIC_V3_ITS_PCI
@@ -86,7 +86,7 @@ config ALPINE_MSI

 config AL_FIC
 	bool "Amazon's Annapurna Labs Fabric Interrupt Controller"
-	depends on OF || COMPILE_TEST
+	depends on OF
 	select GENERIC_IRQ_CHIP
 	select IRQ_DOMAIN
 	help
@@ -375,7 +375,7 @@ config MVEBU_ICU

 config MVEBU_ODMI
 	bool
-	select GENERIC_MSI_IRQ_DOMAIN
+	select GENERIC_MSI_IRQ

 config MVEBU_PIC
 	bool
@@ -488,7 +488,7 @@ config IMX_MU_MSI
 	default m if ARCH_MXC
 	select IRQ_DOMAIN
 	select IRQ_DOMAIN_HIERARCHY
-	select GENERIC_MSI_IRQ_DOMAIN
+	select GENERIC_MSI_IRQ
 	help
 	  Provide a driver for the i.MX Messaging Unit block used as a
 	  CPU-to-CPU MSI controller. This requires a specially crafted DT
@@ -576,6 +576,7 @@ config IRQ_LOONGARCH_CPU
 	select GENERIC_IRQ_CHIP
 	select IRQ_DOMAIN
 	select GENERIC_IRQ_EFFECTIVE_AFF_MASK
+	select LOONGSON_HTVEC
 	select LOONGSON_LIOINTC
 	select LOONGSON_EIOINTC
 	select LOONGSON_PCH_PIC
--- a/drivers/irqchip/irq-apple-aic.c
+++ b/drivers/irqchip/irq-apple-aic.c
@@ -248,14 +248,14 @@ struct aic_info {
 	bool fast_ipi;
 };

-static const struct aic_info aic1_info = {
+static const struct aic_info aic1_info __initconst = {
 	.version	= 1,

 	.event		= AIC_EVENT,
 	.target_cpu	= AIC_TARGET_CPU,
 };

-static const struct aic_info aic1_fipi_info = {
+static const struct aic_info aic1_fipi_info __initconst = {
 	.version	= 1,

 	.event		= AIC_EVENT,
@@ -264,7 +264,7 @@ static const struct aic_info aic1_fipi_info = {
 	.fast_ipi	= true,
 };

-static const struct aic_info aic2_info = {
+static const struct aic_info aic2_info __initconst = {
 	.version	= 2,

 	.irq_cfg	= AIC2_IRQ_CFG,
--- a/drivers/irqchip/irq-gic-pm.c
+++ b/drivers/irqchip/irq-gic-pm.c
@@ -102,7 +102,7 @@ static int gic_probe(struct platform_device *pdev)

 	pm_runtime_enable(dev);

-	ret = pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
 	if (ret < 0)
 		goto rpm_disable;

--- a/Show More
+++ b/Show More