Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Rafael J. Wysocki b55a0cdbec PM: s2idle: ACPI: Fix wakeup interrupts handling ... commit cb1f65c1e1424a4b5e4a86da8aa3b8fd8459c8ec upstream. After commit e3728b50cd9b ("ACPI: PM: s2idle: Avoid possible race related to the EC GPE") wakeup interrupts occurring immediately after the one discarded by acpi_s2idle_wake() may be missed. Moreover, if the SCI triggers again immediately after the rearming in acpi_s2idle_wake(), that wakeup may be missed too. The problem is that pm_system_irq_wakeup() only calls pm_system_wakeup() when pm_wakeup_irq is 0, but that's not the case any more after the interrupt causing acpi_s2idle_wake() to run until pm_wakeup_irq is cleared by the pm_wakeup_clear() call in s2idle_loop(). However, there may be wakeup interrupts occurring in that time frame and if that happens, they will be missed. To address that issue first move the clearing of pm_wakeup_irq to the point at which it is known that the interrupt causing acpi_s2idle_wake() to tun will be discarded, before rearming the SCI for wakeup. Moreover, because that only reduces the size of the time window in which the issue may manifest itself, allow pm_system_irq_wakeup() to register two second wakeup interrupts in a row and, when discarding the first one, replace it with the second one. [Of course, this assumes that only one wakeup interrupt can be discarded in one go, but currently that is the case and I am not aware of any plans to change that.] Fixes: e3728b50cd9b ("ACPI: PM: s2idle: Avoid possible race related to the EC GPE") Cc: 5.4+ <stable@vger.kernel.org> # 5.4+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-02-16 12:52:50 +01:00
..
firmware_loader	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
power	PM: s2idle: ACPI: Fix wakeup interrupts handling	2022-02-16 12:52:50 +01:00
regmap	regmap: Fix possible double-free in regcache_rbtree_exit()	2021-11-02 19:46:13 +01:00
test
arch_topology.c	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
attribute_container.c
base.h
bus.c
cacheinfo.c	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
class.c
component.c
container.c
core.c	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
cpu.c	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
dd.c	driver core: Fix locking bug in deferred_probe_timeout_work_func()	2021-04-16 11:46:38 +02:00
devcon.c
devcoredump.c
devres.c
devtmpfs.c	devtmpfs regression fix: reconfigure on each mount	2022-01-20 09:19:17 +01:00
driver.c
firmware.c
hypervisor.c
init.c
isa.c
Kconfig
Makefile
map.c
memory.c	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
module.c
node.c	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
pinctrl.c
platform-msi.c
platform.c	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
property.c
soc.c	drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions	2022-01-16 09:15:38 +01:00
swnode.c
syscore.c
topology.c
transport_class.c