mei: request autosuspend after sending rx flow control

A rx flow control waiting in the control queue may block autosuspend. Re-request autosuspend after flow control been sent to unblock the transition to the low power state. Cc: <[email protected]> Signed-off-by: Alexander Usyskin <[email protected]> Signed-off-by: Tomas Winkler <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
dabrace · May 27, 2021 · bbf0a94 · bbf0a94
1 parent 022b93c
commit bbf0a94
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
@@ -277,6 +277,9 @@ static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb,
 		return ret;
 	}
 
+	pm_runtime_mark_last_busy(dev->dev);
+	pm_request_autosuspend(dev->dev);
+
 	list_move_tail(&cb->list, &cl->rd_pending);
 
 	return 0;