PM: wakeup: Handle empty list in wakeup_sources_walk_start()

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[ Upstream commit 75ce02f4bc ]

In the case of an empty wakeup_sources list, wakeup_sources_walk_start()
will return an invalid but non-NULL address. This also affects wrappers
of the aforementioned function, like for_each_wakeup_source().

Update wakeup_sources_walk_start() to return NULL in case of an empty
list.

Fixes: b4941adb24 ("PM: wakeup: Add routine to help fetch wakeup source object.")
Signed-off-by: Samuel Wu <wusamuel@google.com>
[ rjw: Subject and changelog edits ]
Link: https://patch.msgid.link/20260124012133.2451708-2-wusamuel@google.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Samuel Wu 2026-01-23 17:21:29 -08:00 • committed by Greg Kroah-Hartman

parent 80d58a8915

commit 1141301a71

1 changed files with 1 additions and 3 deletions

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drivers/base/power/wakeup.c

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