This is a note to let you know that I've just added the patch titled
drm/xe: Use missing lock in relay_needs_worker
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-xe-use-missing-lock-in-relay_needs_worker.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c80fc2bb3557069c1781c0f00483aa559e2a882b
Author: Nirmoy Das <nirmoy.das@xxxxxxxxx>
Date: Mon Jun 3 10:17:23 2024 +0200
drm/xe: Use missing lock in relay_needs_worker
[ Upstream commit 8b01f970ee890574b3607c85781354a765c849bd ]
Add missing lock that is protecting relay->incoming_actions.
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240603081723.18775-1-nirmoy.das@xxxxxxxxx
Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/xe/xe_guc_relay.c b/drivers/gpu/drm/xe/xe_guc_relay.c
index c0a2d8d5d3b3..b49137ea6d84 100644
--- a/drivers/gpu/drm/xe/xe_guc_relay.c
+++ b/drivers/gpu/drm/xe/xe_guc_relay.c
@@ -757,7 +757,14 @@ static void relay_process_incoming_action(struct xe_guc_relay *relay)
static bool relay_needs_worker(struct xe_guc_relay *relay)
{
- return !list_empty(&relay->incoming_actions);
+ bool is_empty;
+
+ spin_lock(&relay->lock);
+ is_empty = list_empty(&relay->incoming_actions);
+ spin_unlock(&relay->lock);
+
+ return !is_empty;
+
}
static void relay_kick_worker(struct xe_guc_relay *relay)
