AcoSail/kernel_optimize_test
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65c021e735
kernel_optimize_test/drivers/base
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Rafael J. Wysocki 65c021e735 PM: runtime: Defer suspending suppliers 
[ Upstream commit 5244f5e2d801259af877ee759e8c22364c607072 ]

Because the PM-runtime status of the device is not updated in
__rpm_callback(), attempts to suspend the suppliers of the given
device triggered by the rpm_put_suppliers() call in there may
cause a supplier to be suspended completely before the status of
the consumer is updated to RPM_SUSPENDED, which is confusing.

To avoid that (1) modify __rpm_callback() to only decrease the
PM-runtime usage counter of each supplier and (2) make rpm_suspend()
try to suspend the suppliers after changing the consumer's status to
RPM_SUSPENDED, in analogy with the device's parent.

Link: https://lore.kernel.org/linux-pm/CAPDyKFqm06KDw_p8WXsM4dijDbho4bb6T4k50UqqvR1_COsp8g@mail.gmail.com/
Fixes: 21d5c57b37 ("PM / runtime: Use device links")
Reported-by: elaine.zhang <zhangqing@rock-chips.com>
Diagnosed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-30 14:32:03 +02:00
..
firmware_loader Char/Misc driver patches for 5.10-rc1 2020-10-15 10:01:51 -07:00
power PM: runtime: Defer suspending suppliers 2021-03-30 14:32:03 +02:00
regmap regmap: sdw: use _no_pm functions in regmap_read/write 2021-03-04 11:38:15 +01:00
test drivers/base: build kunit tests without structleak plugin 2021-03-17 17:06:24 +01:00
arch_topology.c Driver Core patches for 5.10-rc1 2020-10-14 16:09:32 -07:00
attribute_container.c
base.h driver core: add deferring probe reason to devices_deferred property 2020-07-30 09:03:43 +02:00
bus.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00
cacheinfo.c drivers core: Use sysfs_emit for shared_cpu_map_show and shared_cpu_list_show 2020-10-02 13:24:40 +02:00
class.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00
component.c
container.c
core.c driver core: Extend device_is_dependent() 2021-01-27 11:55:18 +01:00
cpu.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00
dd.c drivers core: Free dma_range_map when driver probe failed 2021-01-27 11:55:18 +01:00
devcoredump.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00
devres.c devres: provide devm_krealloc() 2020-09-08 13:32:06 +02:00
devtmpfs.c init: add an init_chroot helper 2020-07-31 08:17:52 +02:00
driver.c
firmware.c
hypervisor.c
init.c
isa.c
Kconfig
Makefile device property: Move fwnode_connection_find_match() under drivers/base/property.c 2020-09-08 13:32:06 +02:00
map.c
memory.c drivers/base/memory: don't store phys_device in memory blocks 2021-03-17 17:06:25 +01:00
module.c
node.c mm: don't panic when links can't be created in sysfs 2020-10-16 11:11:18 -07:00
pinctrl.c
platform-msi.c
platform.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00
property.c device property: Move fwnode_connection_find_match() under drivers/base/property.c 2020-09-08 13:32:06 +02:00
soc.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00
swnode.c software node: Fix node registration 2021-03-17 17:06:28 +01:00
syscore.c syscore: Use pm_pr_dbg() for syscore_{suspend,resume}() 2020-09-08 13:32:06 +02:00
topology.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00
transport_class.c