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Commit 8fff0b53 authored by Alexander Usyskin's avatar Alexander Usyskin Committed by Greg Kroah-Hartman
Browse files

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: <stable@vger.kernel.org>
Signed-off-by: default avatarAlexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20210526193334.445759-1-tomas.winkler@intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7889c70e

drivers/misc/mei/interrupt.c

+3 −0
Original line number Diff line number Diff line
@@ -226,6 +226,9 @@ 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;