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linux-kernelorg-stable/drivers/base/power
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Rafael J. Wysocki 44cc89f764 PM: runtime: Update device status before letting suppliers suspend 
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 rpm_put_suppliers() called by it may fail.

Fix this by making __rpm_callback() update the device's status to
RPM_SUSPENDED before calling rpm_put_suppliers() if the current
status of the device is RPM_SUSPENDING and the callback just invoked
by it has returned 0 (success).

While at it, modify the code in __rpm_callback() to always check
the device's PM-runtime status under its PM lock.

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>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Elaine Zhang <zhangiqng@rock-chips.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: 4.10+ <stable@vger.kernel.org> # 4.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 		2021-03-01 17:40:38 +01:00
..
Makefile
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clock_ops.c PM: clk: make PM clock layer compatible with clocks that must sleep 2021-01-27 19:29:32 +01:00
common.c
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domain.c Driver core / debugfs update for 5.12-rc1 2021-02-24 10:13:55 -08:00
domain_governor.c PM: domains: use device's next wakeup to determine domain idle state 2021-01-22 17:08:28 +01:00
generic_ops.c
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main.c PM: sleep: Use dev_printk() when possible 2021-01-27 19:21:17 +01:00
power.h
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qos-test.c
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qos.c
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runtime.c PM: runtime: Update device status before letting suppliers suspend 2021-03-01 17:40:38 +01:00
sysfs.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00
trace.c PM: sleep: core: mark 2 functions as __init to save some memory 2020-06-23 17:35:33 +02:00
wakeirq.c
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wakeup.c
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wakeup_stats.c drivers core: Miscellaneous changes for sysfs_emit 2020-10-02 13:12:07 +02:00