drm/xe/guc_submit: Make suspend_wait interruptible

Rely on wait_event_interruptible_timeout() to put the process to sleep
with TASK_INTERRUPTIBLE. It allows using this function in interruptible
context.

v2: Propagate error on wait_event_interruptible_timeout (Matt Brost)

Signed-off-by: Francois Dugast <[e-mail]>
Reviewed-by: Matthew Brost <[e-mail]>
Signed-off-by: Matthew Brost <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/xe/xe_guc_submit.c

···
 	 * suspend_pending upon kill but to be paranoid but races in which
 	 * suspend_pending is set after kill also check kill here.
 	 */
-	ret = wait_event_timeout(q->guc->suspend_wait,
-				 !READ_ONCE(q->guc->suspend_pending) ||
-				 exec_queue_killed(q) ||
-				 guc_read_stopped(guc),
-				 HZ * 5);
+	ret = wait_event_interruptible_timeout(q->guc->suspend_wait,
+					       !READ_ONCE(q->guc->suspend_pending) ||
+					       exec_queue_killed(q) ||
+					       guc_read_stopped(guc),
+					       HZ * 5);
 
 	if (!ret) {
 		xe_gt_warn(guc_to_gt(guc),
···
 		return -ETIME;
 	}
 
-	return 0;
+	return ret < 0 ? ret : 0;
 }
 
 static void guc_exec_queue_resume(struct xe_exec_queue *q)