drm/mali-dp: Fix runtime PM leak in malidp_crtc_atomic_enable()

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malidp_crtc_atomic_enable() resumes the device with
pm_runtime_get_sync() and returns early when the resume fails.  The
runtime PM usage count is incremented by pm_runtime_get_sync() even
when the resume fails, so returning without dropping the reference
leaks it and, once the error has been hit, prevents the device from
ever suspending again.

Drop the runtime PM reference with pm_runtime_put_noidle() on the
resume failure path before returning.

Fixes: 85f6421889 ("drm: mali-dp: Enable power management for the device.")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patch.msgid.link/20260916102112.2018372-1-vulab@iscas.ac.cn
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>

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Wentao Liang 2026-09-16 10:21:12 +00:00 • committed by Liviu Dudau

parent bc3f07516a

commit 73ef663c75

1 changed files with 1 additions and 0 deletions

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drivers/gpu/drm/arm/malidp_crtc.c

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