drm/nouveau: Fix race in nouveau_sched_fini()

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nouveau_sched_fini() uses a memory barrier before wait_event().
wait_event(), however, is a macro which expands to a loop which might
check the passed condition several times. The barrier would only take
effect for the first check.

Replace the barrier with a function which takes the spinlock.

Cc: stable@vger.kernel.org # v6.8+
Fixes: 5f03a507b2 ("drm/nouveau: implement 1:1 scheduler - entity relationship")
Acked-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patch.msgid.link/20251024161221.196155-2-phasta@kernel.org

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Philipp Stanner 2025-10-24 18:12:22 +02:00

parent d25e3a610b

commit e0023c8a74

1 changed files with 12 additions and 2 deletions

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drivers/gpu/drm/nouveau/nouveau_sched.c

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