Commit 04af137c authored by Alexander Usyskin's avatar Alexander Usyskin Committed by Greg Kroah-Hartman
Browse files

mei: me: fix reset policy on read error in interrupt 



Avoid link reset in DISABLED and POWERING_DOWN state
if read error is occurred - let shutdown flow finish.
In any state exit interrupt handler if read error occurred.

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/20220215080438.264876-3-tomas.winkler@intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 685867f4

drivers/misc/mei/hw-me.c

+8 −6
Original line number Diff line number Diff line
@@ -1293,11 +1293,13 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) 
		if (rets == -ENODATA)

			break;



		if (rets &&

		    (dev->dev_state != MEI_DEV_RESETTING &&

		     dev->dev_state != MEI_DEV_POWER_DOWN)) {

			dev_err(dev->dev, "mei_irq_read_handler ret = %d.\n",

						rets);

		if (rets) {

			dev_err(dev->dev, "mei_irq_read_handler ret = %d, state = %d.\n",

				rets, dev->dev_state);

			if (dev->dev_state != MEI_DEV_RESETTING &&

			    dev->dev_state != MEI_DEV_DISABLED &&

			    dev->dev_state != MEI_DEV_POWERING_DOWN &&

			    dev->dev_state != MEI_DEV_POWER_DOWN)

				schedule_work(&dev->reset_work);

			goto end;

		}