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ACPI: DPTF: Remove int340x thermal scan handler

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Using the IS_ENABLED() macro in the int340x_thermal_handler_attach()
forces the kernel to be recompiled when thermal drivers are enabled
or disabled, which is a significant limitation of its modularity.

The IS_ENABLED() macro is particularly problematic for the Android
Generic Kernel Image (GKI) project which uses unified core kernel
while SoC/board support is moved to loadable vendor modules.

The Intel Dynamic Platform and Thermal Framework (DPTF) requires
thermal drivers to be loaded at runtime, thus ACPI bus scan handler
is not needed and acpi_default_enumeration() may create all platform
devices, regardless of the actual setting of CONFIG_INT340X_THERMAL.

Signed-off-by: Slawomir Rosek <srosek@google.com>
Link: https://patch.msgid.link/20251103162516.2606158-3-srosek@google.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Slawomir Rosek
2025-11-03 16:25:16 +00:00
committed by Rafael J. Wysocki
parent 13a96342d5
commit 966c9e65ba
4 changed files with 0 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/acpi/dptf/Makefile
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@@ -1,4 +1,3 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_ACPI) += int340x_thermal.o
obj-$(CONFIG_DPTF_POWER) += dptf_power.o
obj-$(CONFIG_DPTF_PCH_FIVR) += dptf_pch_fivr.o

89
drivers/acpi/dptf/int340x_thermal.c
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@@ -1,89 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* ACPI support for int340x thermal drivers
*
* Copyright (C) 2014, Intel Corporation
* Authors: Zhang Rui <rui.zhang@intel.com>
*/
#include <linux/acpi.h>
#include <linux/module.h>
#include "../internal.h"
static const struct acpi_device_id int340x_thermal_device_ids[] = {
{"INT3400"},
{"INT3401"},
{"INT3402"},
{"INT3403"},
{"INT3404"},
{"INT3406"},
{"INT3407"},
{"INT3408"},
{"INT3409"},
{"INT340A"},
{"INT340B"},
{"INT3532"},
{"INTC1040"},
{"INTC1041"},
{"INTC1042"},
{"INTC1043"},
{"INTC1044"},
{"INTC1045"},
{"INTC1046"},
{"INTC1047"},
{"INTC1048"},
{"INTC1049"},
{"INTC1050"},
{"INTC1060"},
{"INTC1061"},
{"INTC1062"},
{"INTC1063"},
{"INTC1064"},
{"INTC1065"},
{"INTC1066"},
{"INTC1068"},
{"INTC1069"},
{"INTC106A"},
{"INTC106B"},
{"INTC106C"},
{"INTC106D"},
{"INTC10A0"},
{"INTC10A1"},
{"INTC10A2"},
{"INTC10A3"},
{"INTC10A4"},
{"INTC10A5"},
{"INTC10D4"},
{"INTC10D5"},
{"INTC10D6"},
{"INTC10D7"},
{"INTC10D8"},
{"INTC10D9"},
{"INTC10FC"},
{"INTC10FD"},
{"INTC10FE"},
{"INTC10FF"},
{"INTC1100"},
{"INTC1101"},
{"INTC1102"},
{""},
};
static int int340x_thermal_handler_attach(struct acpi_device *adev,
const struct acpi_device_id *id)
{
if (IS_ENABLED(CONFIG_INT340X_THERMAL))
acpi_create_platform_device(adev, NULL);
return 1;
}
static struct acpi_scan_handler int340x_thermal_handler = {
.ids = int340x_thermal_device_ids,
.attach = int340x_thermal_handler_attach,
};
void __init acpi_int340x_thermal_init(void)
{
acpi_scan_add_handler(&int340x_thermal_handler);
}

1
drivers/acpi/internal.h
View File

@@ -27,7 +27,6 @@ static inline void acpi_pci_link_init(void) {}
void acpi_processor_init(void);
void acpi_platform_init(void);
void acpi_pnp_init(void);
void acpi_int340x_thermal_init(void);
int acpi_sysfs_init(void);
void acpi_gpe_apply_masked_gpes(void);
void acpi_container_init(void);

1
drivers/acpi/scan.c
View File

@@ -2711,7 +2711,6 @@ void __init acpi_scan_init(void)
acpi_watchdog_init();
acpi_pnp_init();
acpi_power_resources_init();
acpi_int340x_thermal_init();
acpi_init_lpit();
acpi_scan_add_handler(&generic_device_handler);