[PATCH v2] drm/panthor: fix queue_reset_timeout_locked

From: Chia-I Wu

Date: Tue Dec 02 2025 - 16:31:19 EST


queue_check_job_completion calls queue_reset_timeout_locked to reset the
timeout when progress is made. We want the reset to happen when the
timeout is running, not when it is suspended.

Fixes: 345c5b7cc0f85 ("drm/panthor: Make the timeout per-queue instead of per-job")
Signed-off-by: Chia-I Wu <olvaffe@xxxxxxxxx>

---
v2: reset queue->timeout.remaining when suspended (Boris)
---
drivers/gpu/drm/panthor/panthor_sched.c | 26 +++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c
index 389d508b3848e..95ae42168ce18 100644
--- a/drivers/gpu/drm/panthor/panthor_sched.c
+++ b/drivers/gpu/drm/panthor/panthor_sched.c
@@ -1052,18 +1052,6 @@ group_is_idle(struct panthor_group *group)
return hweight32(inactive_queues) == group->queue_count;
}

-static void
-queue_reset_timeout_locked(struct panthor_queue *queue)
-{
- lockdep_assert_held(&queue->fence_ctx.lock);
-
- if (queue->timeout.remaining != MAX_SCHEDULE_TIMEOUT) {
- mod_delayed_work(queue->scheduler.timeout_wq,
- &queue->timeout.work,
- msecs_to_jiffies(JOB_TIMEOUT_MS));
- }
-}
-
static bool
group_can_run(struct panthor_group *group)
{
@@ -1080,6 +1068,20 @@ queue_timeout_is_suspended(struct panthor_queue *queue)
return queue->timeout.remaining != MAX_SCHEDULE_TIMEOUT;
}

+static void
+queue_reset_timeout_locked(struct panthor_queue *queue)
+{
+ lockdep_assert_held(&queue->fence_ctx.lock);
+
+ if (queue_timeout_is_suspended(queue)) {
+ queue->timeout.remaining = msecs_to_jiffies(JOB_TIMEOUT_MS);
+ } else {
+ mod_delayed_work(queue->scheduler.timeout_wq,
+ &queue->timeout.work,
+ msecs_to_jiffies(JOB_TIMEOUT_MS));
+ }
+}
+
static void
queue_suspend_timeout_locked(struct panthor_queue *queue)
{
--
2.52.0.158.g65b55ccf14-goog