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Wentao Liang 3b732c60a0 PM: hibernate: Add error handling for syscore_suspend()

[ Upstream commit e20a70c572 ]

In hibernation_platform_enter(), the code did not check the
return value of syscore_suspend(), potentially leading to a
situation where syscore_resume() would be called even if
syscore_suspend() failed. This could cause unpredictable
behavior or system instability.

Modify the code sequence in question to properly handle errors returned
by syscore_suspend(). If an error occurs in the suspend path, the code
now jumps to label 'Enable_irqs' skipping the syscore_resume() call and
only enabling interrupts after setting the system state to SYSTEM_RUNNING.

Fixes: 40dc166cb5 ("PM / Core: Introduce struct syscore_ops for core subsystems PM")
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20250119143205.2103-1-vulab@iscas.ac.cn
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-02-08 09:58:03 +01:00

autosleep.c

…

console.c

…

energy_model.c

PM: EM: Add em_dev_update_chip_binning()

2024-04-08 16:05:14 +02:00

hibernate.c

PM: hibernate: Add error handling for syscore_suspend()

2025-02-08 09:58:03 +01:00

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