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drm/xe: Clear pending_disable before signaling suspend fence

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In the schedule-disable done path for suspend, we
signal the suspend fence before clearing pending_disable.

That wakeup can let suspend_wait complete and resume be queued
immediately. The resume path may then reach enable_scheduling()
while pending_disable is still set and hit the
!exec_queue_pending_disable(q) assertion.

Fix this by clearing pending_disable before signaling
the suspend fence, so any resumed transition observes a
consistent state.

Fixes: 87651f31ae ("drm/xe/guc_submit: fix race around suspend_pending")
Cc: stable@vger.kernel.org # v7.0+
Signed-off-by: Tangudu Tilak Tirumalesh <tilak.tirumalesh.tangudu@intel.com>
Reviewed-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patch.msgid.link/20260603065217.3131066-3-tilak.tirumalesh.tangudu@intel.com
(cherry picked from commit 4b1ae138b0e103d753773956a84eebc2edbf62c4)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Tangudu Tilak Tirumalesh 2026-06-03 12:22:16 +05:30 • committed by Rodrigo Vivi
commit 54f2a0442a
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1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/xe/xe_guc_submit.c
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@ -2804,8 +2804,8 @@ static void handle_sched_done(struct xe_guc *guc, struct xe_exec_queue *q,
xe_gt_assert(guc_to_gt(guc), exec_queue_pending_disable(q));
if (q->guc->suspend_pending) {
suspend_fence_signal(q);
clear_exec_queue_pending_disable(q);
suspend_fence_signal(q);
} else {
if (exec_queue_banned(q)) {
smp_wmb();