[PATCH] drm/xe: Use missing lock in relay_needs_worker

[Nirmoy Das]

Add missing lock that is protecting relay->incoming_actions.

Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das at intel.com>
---
 drivers/gpu/drm/xe/xe_guc_relay.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_guc_relay.c b/drivers/gpu/drm/xe/xe_guc_relay.c
index c3bbaf474f9a..ade6162dc259 100644
--- a/drivers/gpu/drm/xe/xe_guc_relay.c
+++ b/drivers/gpu/drm/xe/xe_guc_relay.c
@@ -761,7 +761,14 @@ 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)
-- 
2.42.0