Commit Graph

871001 Commits

Author SHA1 Message Date
Tony Lindgren
bc794744cd Merge branch 'omap-for-v5.5/pm' into omap-for-v5.5/soc 2019-10-23 10:42:39 -07:00
YueHaibing
0a4818c192 ARM: OMAP2+: Remove duplicated include from pmic-cpcap.c
Remove duplicated include.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-23 09:58:41 -07:00
Sebastian Reichel
1994ebd1f7 ARM: OMAP2+: pdata-quirks: drop TI_ST/KIM support
All TI_ST users have been migrated to the new serdev based HCILL
bluetooth driver. That driver is initialized from DT and does not
need any platform quirks.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-22 08:58:58 -07:00
Ben Dooks
06bd77f965 ARM: OMAP2+: make omap44xx_sha0_hwmod and omap44xx_l3_main_2__des static
The omap44xx_sha0_hwmod and omap44xx_l3_main_2__des objects are
not exported so make them static to avoid the following warnings:

arch/arm/mach-omap2/omap_hwmod_44xx_data.c:793:19: warning: symbol 'omap44xx_sha0_hwmod' was not declared. Should it be static?
arch/arm/mach-omap2/omap_hwmod_44xx_data.c:977:26: warning: symbol 'omap44xx_l3_main_2__des' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-21 10:37:10 -07:00
Ben Dooks
89ffcdba95 ARM: OMAP2+: prm44xx: make prm_{save,restore}_context static
The prm_{save,restore}_context functions are not exported
so make them static to avoid the following warnings:

arch/arm/mach-omap2/prm44xx.c:748:6: warning: symbol 'prm_save_context' was not declared. Should it be static?
arch/arm/mach-omap2/prm44xx.c:759:6: warning: symbol 'prm_restore_context' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-21 10:36:27 -07:00
Ben Dooks
607295af88 ARM: OMAP2+: make dra7xx_sha0_hwmod static
The dra7xx_sha0_hwmod object is not exported outside of
omap_hwmod_7xx_data. so make it static to avoid the
following warning:

arch/arm/mach-omap2/omap_hwmod_7xx_data.c:686:19: warning: symbol 'dra7xx_sha0_hwmod' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-21 10:32:09 -07:00
Ben Dooks
87c59ca22b ARM: OMAP2+: do not export am43xx_control functions
Do not export am43xx_control_{save,restore}_context to avoid
the foloowing warnings:

arch/arm/mach-omap2/control.c:687:6: warning: symbol 'am43xx_control_save_context' was not declared. Should it be static?
arch/arm/mach-omap2/control.c:701:6: warning: symbol 'am43xx_control_restore_context' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-21 10:30:54 -07:00
Tony Lindgren
c145649bf2 ARM: OMAP2+: Configure voltage controller for cpcap to low-speed
Looks like the i2c timings in high-speed mode do not work properly to
allow us to clear I2C_DISABLE bits for PRM_VOLTCTRL register and the
device reboots if I2C_DISABLE bits are cleared.

Let's configure the voltage controller i2c for low-speed mode as done in
the Motorola Mapphone Android Linux kernel. This saves us about 7mW of
power during retention compared to the high-speed values.

Let's also change the low-speed warning to pr_info about relying on the
bootloader configured low-speed values like we currently do.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-18 15:09:54 -07:00
Tony Lindgren
71065d3fe8 ARM: OMAP2+: Configure voltage controller for retention
Similar to existing omap3_vc_set_pmic_signaling(), let's add omap4
specific omap4_vc_set_pmic_signaling(). This allows the configured
devices to enable voltage controller for retention later on during
init.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-18 07:56:51 -07:00
YueHaibing
821093e1fd ARM: OMAP2+: Make some functions static
Fix sparse warnings:

arch/arm/mach-omap2/pmic-cpcap.c:29:15: warning: symbol 'omap_cpcap_vsel_to_uv' was not declared. Should it be static?
arch/arm/mach-omap2/pmic-cpcap.c:43:15: warning: symbol 'omap_cpcap_uv_to_vsel' was not declared. Should it be static?
arch/arm/mach-omap2/pmic-cpcap.c:93:15: warning: symbol 'omap_max8952_vsel_to_uv' was not declared. Should it be static?
arch/arm/mach-omap2/pmic-cpcap.c:107:15: warning: symbol 'omap_max8952_uv_to_vsel' was not declared. Should it be static?
arch/arm/mach-omap2/pmic-cpcap.c:140:15: warning: symbol 'omap_fan535503_vsel_to_uv' was not declared. Should it be static?
arch/arm/mach-omap2/pmic-cpcap.c:155:15: warning: symbol 'omap_fan535508_vsel_to_uv' was not declared. Should it be static?
arch/arm/mach-omap2/pmic-cpcap.c:173:15: warning: symbol 'omap_fan535503_uv_to_vsel' was not declared. Should it be static?
arch/arm/mach-omap2/pmic-cpcap.c:192:15: warning: symbol 'omap_fan535508_uv_to_vsel' was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-18 07:56:51 -07:00
Tony Lindgren
21a18129ed ARM: OMAP2+: Simplify code for clkdm_clock_enable and disable
We can make clkdm_clk_enable() usable for clkdm_hwmod_enable() by
dropping the unused clock check, and drop _clkdm_clk_hwmod_enable().

And we can make clkdm_hwmod_disable() call clkdm_hwmod_disable() and drop
the duplicate code in clkdm_hwmod_disable().

Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 08:23:26 -07:00
Tony Lindgren
645ad6f3ca ARM: OMAP2+: Drop unused enable_wakeup and disable_wakeup
We're only using static _enable_wakeup(), the others have no callers.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 08:04:53 -07:00
Tony Lindgren
4873843718 ARM: OMAP2+: Initialize voltage controller for omap4
We're missing initializing the PRM_VOLTCTRL register for voltage
controller. Let's add omap4_vc_init_pmic_signaling() similar to what we
have for omap3 and enable voltage control for retention.

This brings down droid4 power consumption with mainline kernel to somewhere
between 40 and 50mW from about 70 to 80 mW for the whole device when
running idle with LCD and backlight off, WLAN connected, and USB and modem
modules unloaded.

Mostly just rmmod of omap2430, ohci-platform and phy-mapphone-mdm6600 are
needed to idle USB and shut down the modem. And after that measuring idle
power consumption can be done with reading sysfs entry periodically
for /sys/class/power_supply/battery/power_avg. Then rmmod of phy-cpcap-usb
will save few more mW, but will disable the debug UART.

Note that sometimes CM_L4PER_UART1_CLKCTRL at 0x4a009540 does not idle
properly after unloading of phy-mapphone-mdm6600.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 07:51:16 -07:00
Tony Lindgren
caf8c87d7f ARM: OMAP2+: Allow core oswr for omap4
Commit f74297dd93 ("ARM: OMAP2+: Make sure LOGICRETSTATE bits are not
cleared") disabled oswr (open switch retention) for per and core domains
as various GPIO related issues were noticed if the bootloader had
configured the bits for LOGICRETSTATE for per and core domains.

With the recent gpio-omap fixes, mostly related to commit e6818d29ea
("gpio: gpio-omap: configure edge detection for level IRQs for idle
wakeup"), things now behave for enabling core oswr for omap4.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 07:51:16 -07:00
Tony Lindgren
623429d5b9 ARM: OMAP2+: Allow per oswr for omap4
Commit f74297dd93 ("ARM: OMAP2+: Make sure LOGICRETSTATE bits are not
cleared") disabled oswr (open switch retention) for per and core domains
as various GPIO related issues were noticed if the bootloader had
configured the bits for LOGICRETSTATE for per and core domains.

With the recent gpio-omap fixes, mostly related to commit e6818d29ea
("gpio: gpio-omap: configure edge detection for level IRQs for idle
wakeup"), things now behave for enabling per oswr for omap4.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 07:51:16 -07:00
Tony Lindgren
d44fa156dc ARM: OMAP2+: Configure voltage controller for cpcap
We can configure voltage controller for cpcap with the data available in
Motorola Mapphone Android Linux kernel. Let's add it so we can have droid4
behave the same way for voltage controller as other omap4 devices and save
some power when idle.

Note that we're now using high-speed i2c mode, looks like the Motorola
kernel had a typo using 0x200 instead of 200 for the timings which may
caused it to not work properly.

Also note that in the long run, this should just become dts data for a
voltage controller device driver. But let's get things working first to
make it possible to test further changes easily.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 07:51:15 -07:00
Tony Lindgren
32236a8490 ARM: OMAP2+: Update 4430 voltage controller operating points
The current operating points in the mainline kernel are out of date for
at least omap4430. Let's use the values from Motorola Mapphone Linux
Android kernel as presumably those have been verified.

Note that these are only used by voltage controller, they do not enable
any new operating points for cpufreq. Looking at the recent omap3 cpufreq
related patches posted, that's a totally separate series of patches.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 07:51:15 -07:00
Tony Lindgren
ccd369455a ARM: OMAP2+: Remove bogus warnings for machines without twl PMIC
In general we want to see a quiet dmesg output with no errors or warnings
unless something is really wrong and needs attention. We currently see
these bogus warnings on boot:

twl: not initialized
twl6030_uv_to_vsel:OUT OF RANGE! non mapped vsel for 1375000 Vs max 1316660
twl6030_uv_to_vsel:OUT OF RANGE! non mapped vsel for 1375000 Vs max 1316660
twl6030_uv_to_vsel:OUT OF RANGE! non mapped vsel for 1375000 Vs max 1316660
twl6030_uv_to_vsel:OUT OF RANGE! non mapped vsel for 1375000 Vs max 1316660
...

Let's avoid these by checking if a device tree node for cpcap PMIC exists.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 07:51:15 -07:00
Tony Lindgren
dfc065aa89 ARM: OMAP2+: Drop bogus wkup domain oswr setting
The wkup domain is always on and does not have logic off setting. This
got accidentally added by commit f74297dd93 ("ARM: OMAP2+: Make sure
LOGICRETSTATE bits are not cleared") but is harmless.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 07:51:15 -07:00
Tony Lindgren
5395b5557a ARM: OMAP2+: Remove unused wakeup_cpu
After commit 32d174ed1b ("ARM: OMAP4: MPUSS PM: remove unnecessary
shim functions for powerdomain control") this is no longer used.

The code continues execution after context restore on the same CPU,
so we can just use pm_info->pwrdm.

Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-16 07:51:15 -07:00
Tony Lindgren
17a9e5bbbf Merge tag 'wlcore-fix' into fixes 2019-10-11 09:15:35 -07:00
Tony Lindgren
087a2b7ec9 ARM: dts: Use level interrupt for omap4 & 5 wlcore
Commit 572cf7d7b0 ("ARM: dts: Improve omap l4per idling with wlcore edge
sensitive interrupt") changed wlcore interrupts to use edge interrupt based
on what's specified in the wl1835mod.pdf data sheet.

However, there are still cases where we can have lost interrupts as
described in omap_gpio_unidle(). And using a level interrupt instead of edge
interrupt helps as we avoid the check for untriggered GPIO interrupts in
omap_gpio_unidle().

And with commit e6818d29ea ("gpio: gpio-omap: configure edge detection
for level IRQs for idle wakeup") GPIOs idle just fine with level interrupts.

Let's change omap4 and 5 wlcore users back to using level interrupt
instead of edge interrupt. Let's not change the others as I've only seen
this on omap4 and 5, probably because the other SoCs don't have l4per idle
independent of the CPUs.

Fixes: 572cf7d7b0 ("ARM: dts: Improve omap l4per idling with wlcore edge sensitive interrupt")
Depends-on: e6818d29ea ("gpio: gpio-omap: configure edge detection for level IRQs for idle wakeup")
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: Eyal Reizer <eyalr@ti.com>
Cc: Guy Mishol <guym@ti.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-09 15:11:27 -07:00
Andrey Smirnov
647c8977e1 ARM: dts: am3874-iceboard: Fix 'i2c-mux-idle-disconnect' usage
According to
Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt,
i2c-mux-idle-disconnect is a property of a parent node since it
pertains to the mux/switch as a whole, so move it there and drop all
of the concurrences in child nodes.

Fixes: d031773169 ("ARM: dts: Adds device tree file for McGill's IceBoard, based on TI AM3874")
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Benoît Cousson <bcousson@baylibre.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Graeme Smecher <gsmecher@threespeedlogic.com>
Cc: linux-omap@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Tested-by: Graeme Smecher <gsmecher@threespeedlogic.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-08 07:16:14 -07:00
Tero Kristo
734a9b21bb ARM: dts: omap5: fix gpu_cm clock provider name
The clkctrl code searches for the parent clockdomain based on the name
of the CM provider node. The introduction of SGX node for omap5 made
the node name for the gpu_cm to be clock-controller. There is no
clockdomain named like this, so the lookup fails. Fix by changing
the node name properly.

Fixes: 394534cb07 ("ARM: dts: Configure sgx for omap5")
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-08 06:44:45 -07:00
Adam Ford
6b512b0ee0 ARM: dts: logicpd-torpedo-som: Remove twl_keypad
The TWL4030 used on the Logit PD Torpedo SOM does not have the
keypad pins routed.  This patch disables the twl_keypad driver
to remove some splat during boot:

twl4030_keypad 48070000.i2c:twl@48:keypad: missing or malformed property linux,keymap: -22
twl4030_keypad 48070000.i2c:twl@48:keypad: Failed to build keymap
twl4030_keypad: probe of 48070000.i2c:twl@48:keypad failed with error -22

Signed-off-by: Adam Ford <aford173@gmail.com>
[tony@atomide.com: removed error time stamps]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-04 09:08:31 -07:00
Tony Lindgren
1913c7f3fc Merge tag 'fix-missing-panels' into fixes 2019-10-04 09:06:41 -07:00
Tony Lindgren
96d49bbfe6 ARM: omap2plus_defconfig: Fix selected panels after generic panel changes
The old omapdrm panels got removed for v5.4 in favor of generic panels,
and the Kconfig options changed. Let's update omap2plus_defconfig
accordingly so the same panels are still enabled.

Cc: Jyri Sarha <jsarha@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-10-03 09:44:40 -07:00
Linus Torvalds
54ecb8f702 Linux 5.4-rc1 v5.4-rc1 2019-09-30 10:35:40 -07:00
Linus Torvalds
bb48a59135 Merge tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
 "A bunch of fixes that accumulated in recent weeks, mostly material for
  stable.

  Summary:

   - fix for regression from 5.3 that prevents to use balance convert
     with single profile

   - qgroup fixes: rescan race, accounting leak with multiple writers,
     potential leak after io failure recovery

   - fix for use after free in relocation (reported by KASAN)

   - other error handling fixups"

* tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: qgroup: Fix reserved data space leak if we have multiple reserve calls
  btrfs: qgroup: Fix the wrong target io_tree when freeing reserved data space
  btrfs: Fix a regression which we can't convert to SINGLE profile
  btrfs: relocation: fix use-after-free on dead relocation roots
  Btrfs: fix race setting up and completing qgroup rescan workers
  Btrfs: fix missing error return if writeback for extent buffer never started
  btrfs: adjust dirty_metadata_bytes after writeback failure of extent buffer
  Btrfs: fix selftests failure due to uninitialized i_mode in test inodes
2019-09-30 10:25:24 -07:00
Linus Torvalds
80b29b6b8c Merge tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux
Pull csky updates from Guo Ren:
 "This round of csky subsystem just some fixups:

   - Fix mb() synchronization problem

   - Fix dma_alloc_coherent with PAGE_SO attribute

   - Fix cache_op failed when cross memory ZONEs

   - Optimize arch_sync_dma_for_cpu/device with dma_inv_range

   - Fix ioremap function losing

   - Fix arch_get_unmapped_area() implementation

   - Fix defer cache flush for 610

   - Support kernel non-aligned access

   - Fix 610 vipt cache flush mechanism

   - Fix add zero_fp fixup perf backtrace panic

   - Move static keyword to the front of declaration

   - Fix csky_pmu.max_period assignment

   - Use generic free_initrd_mem()

   - entry: Remove unneeded need_resched() loop"

* tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux:
  csky: Move static keyword to the front of declaration
  csky: entry: Remove unneeded need_resched() loop
  csky: Fixup csky_pmu.max_period assignment
  csky: Fixup add zero_fp fixup perf backtrace panic
  csky: Use generic free_initrd_mem()
  csky: Fixup 610 vipt cache flush mechanism
  csky: Support kernel non-aligned access
  csky: Fixup defer cache flush for 610
  csky: Fixup arch_get_unmapped_area() implementation
  csky: Fixup ioremap function losing
  csky: Optimize arch_sync_dma_for_cpu/device with dma_inv_range
  csky/dma: Fixup cache_op failed when cross memory ZONEs
  csky: Fixup dma_alloc_coherent with PAGE_SO attribute
  csky: Fixup mb() synchronization problem
2019-09-30 10:16:17 -07:00
Linus Torvalds
cef0aa0ce8 Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Olof Johansson:
 "A few fixes that have trickled in through the merge window:

   - Video fixes for OMAP due to panel-dpi driver removal

   - Clock fixes for OMAP that broke no-idle quirks + nfsroot on DRA7

   - Fixing arch version on ASpeed ast2500

   - Two fixes for reset handling on ARM SCMI"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: aspeed: ast2500 is ARMv6K
  reset: reset-scmi: add missing handle initialisation
  firmware: arm_scmi: reset: fix reset_state assignment in scmi_domain_reset
  bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()
  ARM: dts: logicpd-som-lv: Fix i2c2 and i2c3 Pin mux
  ARM: dts: am3517-evm: Fix missing video
  ARM: dts: logicpd-torpedo-baseboard: Fix missing video
  ARM: omap2plus_defconfig: Fix missing video
  bus: ti-sysc: Fix handling of invalid clocks
  bus: ti-sysc: Fix clock handling for no-idle quirks
2019-09-30 10:04:28 -07:00
Peter Ujfalusi
f90ec6cdf6 ARM: dts: am4372: Set memory bandwidth limit for DISPC
Set memory bandwidth limit to filter out resolutions above 720p@60Hz to
avoid underflow errors due to the bandwidth needs of higher resolutions.

am43xx can not provide enough bandwidth to DISPC to correctly handle
'high' resolutions.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-09-30 09:32:03 -07:00
Linus Torvalds
cf4f493b10 Merge tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
 "A few more tracing fixes:

   - Fix a buffer overflow by checking nr_args correctly in probes

   - Fix a warning that is reported by clang

   - Fix a possible memory leak in error path of filter processing

   - Fix the selftest that checks for failures, but wasn't failing

   - Minor clean up on call site output of a memory trace event"

* tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  selftests/ftrace: Fix same probe error test
  mm, tracing: Print symbol name for call_site in trace events
  tracing: Have error path in predicate_parse() free its allocated memory
  tracing: Fix clang -Wint-in-bool-context warnings in IF_ASSIGN macro
  tracing/probe: Fix to check the difference of nr_args before adding probe
2019-09-30 09:29:53 -07:00
Linus Torvalds
c710364f78 Merge tag 'mmc-v5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull more MMC updates from Ulf Hansson:
 "A couple more updates/fixes for MMC:

   - sdhci-pci: Add Genesys Logic GL975x support

   - sdhci-tegra: Recover loss in throughput for DMA

   - sdhci-of-esdhc: Fix DMA bug"

* tag 'mmc-v5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: host: sdhci-pci: Add Genesys Logic GL975x support
  mmc: tegra: Implement ->set_dma_mask()
  mmc: sdhci: Let drivers define their DMA mask
  mmc: sdhci-of-esdhc: set DMA snooping based on DMA coherence
  mmc: sdhci: improve ADMA error reporting
2019-09-30 09:21:53 -07:00
Krzysztof Wilczynski
9af032a301 csky: Move static keyword to the front of declaration
Move the static keyword to the front of declaration of
csky_pmu_of_device_ids, and resolve the following compiler
warning that can be seen when building with warnings
enabled (W=1):

arch/csky/kernel/perf_event.c:1340:1: warning:
  ‘static’ is not at beginning of declaration [-Wold-style-declaration]

Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
2019-09-30 11:50:49 +08:00
Valentin Schneider
a2139d3b4f csky: entry: Remove unneeded need_resched() loop
Since the enabling and disabling of IRQs within preempt_schedule_irq()
is contained in a need_resched() loop, we don't need the outer arch
code loop.

Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
2019-09-30 11:49:47 +08:00
Linus Torvalds
97f9a3c4ee Merge tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull Documentation/process update from Greg KH:
 "Here are two small Documentation/process/embargoed-hardware-issues.rst
  file updates that missed my previous char/misc pull request.

  The first one adds an Intel representative for the process, and the
  second one cleans up the text a bit more when it comes to how the
  disclosure rules work, as it was a bit confusing to some companies"

* tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Documentation/process: Clarify disclosure rules
  Documentation/process: Volunteer as the ambassador for Intel
2019-09-29 19:52:52 -07:00
Linus Torvalds
1eb80d6ffb Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro:
 "A couple of misc patches"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  afs dynroot: switch to simple_dir_operations
  fs/handle.c - fix up kerneldoc
2019-09-29 19:42:07 -07:00
Linus Torvalds
7edee5229c Merge tag '5.4-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull more cifs updates from Steve French:
 "Fixes from the recent SMB3 Test events and Storage Developer
  Conference (held the last two weeks).

  Here are nine smb3 patches including an important patch for debugging
  traces with wireshark, with three patches marked for stable.

  Additional fixes from last week to better handle some newly discovered
  reparse points, and a fix the create/mkdir path for setting the mode
  more atomically (in SMB3 Create security descriptor context), and one
  for path name processing are still being tested so are not included
  here"

* tag '5.4-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Fix oplock handling for SMB 2.1+ protocols
  smb3: missing ACL related flags
  smb3: pass mode bits into create calls
  smb3: Add missing reparse tags
  CIFS: fix max ea value size
  fs/cifs/sess.c: Remove set but not used variable 'capabilities'
  fs/cifs/smb2pdu.c: Make SMB2_notify_init static
  smb3: fix leak in "open on server" perf counter
  smb3: allow decryption keys to be dumped by admin for debugging
2019-09-29 19:37:32 -07:00
Mao Han
3a09d8e289 csky: Fixup csky_pmu.max_period assignment
The csky_pmu.max_period has type u64, and BIT() can only return
32 bits unsigned long on C-SKY. The initialization for max_period
will be incorrect when count_width is bigger than 32.

Use BIT_ULL()

Signed-off-by: Mao Han <han_mao@c-sky.com>
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
2019-09-30 10:26:33 +08:00
Guo Ren
48ede51fd9 csky: Fixup add zero_fp fixup perf backtrace panic
We need set fp zero to let backtrace know the end. The patch fixup perf
callchain panic problem, because backtrace didn't know what is the end
of fp.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reported-by: Mao Han <han_mao@c-sky.com>
2019-09-30 10:26:32 +08:00
Mike Rapoport
fdbdcddc2c csky: Use generic free_initrd_mem()
The csky implementation of free_initrd_mem() is an open-coded version of
free_reserved_area() without poisoning.

Remove it and make csky use the generic version of free_initrd_mem().

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
2019-09-30 10:26:24 +08:00
Linus Torvalds
3f2dc2798b Merge branch 'entropy'
Merge active entropy generation updates.

This is admittedly partly "for discussion".  We need to have a way
forward for the boot time deadlocks where user space ends up waiting for
more entropy, but no entropy is forthcoming because the system is
entirely idle just waiting for something to happen.

While this was triggered by what is arguably a user space bug with
GDM/gnome-session asking for secure randomness during early boot, when
they didn't even need any such truly secure thing, the issue ends up
being that our "getrandom()" interface is prone to that kind of
confusion, because people don't think very hard about whether they want
to block for sufficient amounts of entropy.

The approach here-in is to decide to not just passively wait for entropy
to happen, but to start actively collecting it if it is missing.  This
is not necessarily always possible, but if the architecture has a CPU
cycle counter, there is a fair amount of noise in the exact timings of
reasonably complex loads.

We may end up tweaking the load and the entropy estimates, but this
should be at least a reasonable starting point.

As part of this, we also revert the revert of the ext4 IO pattern
improvement that ended up triggering the reported lack of external
entropy.

* getrandom() active entropy waiting:
  Revert "Revert "ext4: make __ext4_get_inode_loc plug""
  random: try to actively add entropy rather than passively wait for it
2019-09-29 19:25:39 -07:00
Linus Torvalds
02f03c4206 Revert "Revert "ext4: make __ext4_get_inode_loc plug""
This reverts commit 72dbcf7215.

Instead of waiting forever for entropy that may just not happen, we now
try to actively generate entropy when required, and are thus hopefully
avoiding the problem that caused the nice ext4 IO pattern fix to be
reverted.

So revert the revert.

Cc: Ahmed S. Darwish <darwish.07@gmail.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Alexander E. Patrakov <patrakov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-09-29 17:59:23 -07:00
Linus Torvalds
50ee7529ec random: try to actively add entropy rather than passively wait for it
For 5.3 we had to revert a nice ext4 IO pattern improvement, because it
caused a bootup regression due to lack of entropy at bootup together
with arguably broken user space that was asking for secure random
numbers when it really didn't need to.

See commit 72dbcf7215 (Revert "ext4: make __ext4_get_inode_loc plug").

This aims to solve the issue by actively generating entropy noise using
the CPU cycle counter when waiting for the random number generator to
initialize.  This only works when you have a high-frequency time stamp
counter available, but that's the case on all modern x86 CPU's, and on
most other modern CPU's too.

What we do is to generate jitter entropy from the CPU cycle counter
under a somewhat complex load: calling the scheduler while also
guaranteeing a certain amount of timing noise by also triggering a
timer.

I'm sure we can tweak this, and that people will want to look at other
alternatives, but there's been a number of papers written on jitter
entropy, and this should really be fairly conservative by crediting one
bit of entropy for every timer-induced jump in the cycle counter.  Not
because the timer itself would be all that unpredictable, but because
the interaction between the timer and the loop is going to be.

Even if (and perhaps particularly if) the timer actually happens on
another CPU, the cacheline interaction between the loop that reads the
cycle counter and the timer itself firing is going to add perturbations
to the cycle counter values that get mixed into the entropy pool.

As Thomas pointed out, with a modern out-of-order CPU, even quite simple
loops show a fair amount of hard-to-predict timing variability even in
the absense of external interrupts.  But this tries to take that further
by actually having a fairly complex interaction.

This is not going to solve the entropy issue for architectures that have
no CPU cycle counter, but it's not clear how (and if) that is solvable,
and the hardware in question is largely starting to be irrelevant.  And
by doing this we can at least avoid some of the even more contentious
approaches (like making the entropy waiting time out in order to avoid
the possibly unbounded waiting).

Cc: Ahmed Darwish <darwish.07@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Nicholas Mc Guire <hofrat@opentech.at>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Alexander E. Patrakov <patrakov@gmail.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-09-29 17:38:52 -07:00
Olof Johansson
9bfd7319e8 Merge tag 'fixes-5.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Fixes for omap variants

Few fixes for ti-sysc interconnect target module driver for no-idle
quirks that caused nfsroot to fail on some dra7 boards.

And let's fixes to get LCD working again for logicpd board that got
broken a while back with removal of panel-dpi driver. We need to now
use generic CONFIG_DRM_PANEL_SIMPLE instead.

* tag 'fixes-5.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()
  ARM: dts: logicpd-som-lv: Fix i2c2 and i2c3 Pin mux
  ARM: dts: am3517-evm: Fix missing video
  ARM: dts: logicpd-torpedo-baseboard: Fix missing video
  ARM: omap2plus_defconfig: Fix missing video
  bus: ti-sysc: Fix handling of invalid clocks
  bus: ti-sysc: Fix clock handling for no-idle quirks

Link: https://lore.kernel.org/r/pull-1568819401-72461@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-09-29 11:20:48 -07:00
Olof Johansson
a4207a1c5e Merge tag 'scmi-fixes-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
ARM SCMI fixes for v5.4

Couple of fixes: one in scmi reset driver initialising missed scmi handle
and an other in scmi reset API implementation fixing the assignment of
reset state

* tag 'scmi-fixes-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  reset: reset-scmi: add missing handle initialisation
  firmware: arm_scmi: reset: fix reset_state assignment in scmi_domain_reset

Link: https://lore.kernel.org/r/20190918142139.GA4370@bogus
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-09-29 11:20:41 -07:00
Linus Torvalds
a3c0e7b1fe Merge tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
More libnvdimm updates from Dan Williams:

 - Complete the reworks to interoperate with powerpc dynamic huge page
   sizes

 - Fix a crash due to missed accounting for the powerpc 'struct
   page'-memmap mapping granularity

 - Fix badblock initialization for volatile (DRAM emulated) pmem ranges

 - Stop triggering request_key() notifications to userspace when
   NVDIMM-security is disabled / not present

 - Miscellaneous small fixups

* tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm/region: Enable MAP_SYNC for volatile regions
  libnvdimm: prevent nvdimm from requesting key when security is disabled
  libnvdimm/region: Initialize bad block for volatile namespaces
  libnvdimm/nfit_test: Fix acpi_handle redefinition
  libnvdimm/altmap: Track namespace boundaries in altmap
  libnvdimm: Fix endian conversion issues 
  libnvdimm/dax: Pick the right alignment default when creating dax devices
  powerpc/book3s64: Export has_transparent_hugepage() related functions.
2019-09-29 10:33:41 -07:00
Linus Torvalds
939ca9f175 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull thermal SoC updates from Eduardo Valentin:
 "This is a really small pull in the midst of a lot of pending patches.

  We are in the middle of restructuring how we are maintaining the
  thermal subsystem, as per discussion in our last LPC. For now, I am
  sending just some changes that were pending in my tree. Looking
  forward to get a more streamlined process in the next merge window"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  thermal: db8500: Rewrite to be a pure OF sensor
  thermal: db8500: Use dev helper variable
  thermal: db8500: Finalize device tree conversion
  thermal: thermal_mmio: remove some dead code
2019-09-29 10:24:23 -07:00
Linus Torvalds
9ecb3e10a9 Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull  more i2c updates from Wolfram Sang:

 - make Lenovo Yoga C630 boot now that the dependencies are merged

 - restore BlockProcessCall for i801, accidently removed in this merge
   window

 - a bugfix for the riic driver

 - an improvement to the slave-eeprom driver which should have been in
   the first pull request but sadly got lost in the process

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: slave-eeprom: Add read only mode
  i2c: i801: Bring back Block Process Call support for certain platforms
  i2c: riic: Clear NACK in tend isr
  i2c: qcom-geni: Disable DMA processing on the Lenovo Yoga C630
2019-09-29 10:20:16 -07:00