From 602c13a88594b2c6c343c731160c267b51fdc417 Mon Sep 17 00:00:00 2001 From: Alexander Usyskin Date: Wed, 26 May 2021 22:33:34 +0300 Subject: [PATCH] mei: request autosuspend after sending rx flow control commit bbf0a94744edfeee298e4a9ab6fd694d639a5cdf upstream. 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: Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Link: https://lore.kernel.org/r/20210526193334.445759-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/interrupt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index d1df797c7568d..85bf730c7c91b 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -220,6 +220,9 @@ 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; -- 2.47.2