From: Alexander Usyskin alexander.usyskin@intel.com

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: stable@vger.kernel.org Signed-off-by: Alexander Usyskin alexander.usyskin@intel.com Signed-off-by: Tomas Winkler tomas.winkler@intel.com --- 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 a98f6b895af7..aab3ebfa9fc4 100644 --- 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;