cpuidle: Fail cpuidle device registration if there is one already

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[ Upstream commit 7b1b796117 ]

Refuse to register a cpuidle device if the given CPU has a cpuidle
device already and print a message regarding it.

Without this, an attempt to register a new cpuidle device without
unregistering the existing one leads to the removal of the existing
cpuidle device without removing its sysfs interface.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Rafael J. Wysocki 2025-09-19 13:22:20 +02:00 • committed by Greg Kroah-Hartman

parent 7f6993bd32

commit 39805c7328

1 changed files with 7 additions and 1 deletions

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drivers/cpuidle/cpuidle.c

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