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

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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: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20220215080438.264876-3-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Usyskin 2022-02-15 10:04:37 +02:00 committed by Greg Kroah-Hartman
parent 685867f40c
commit 04af137c6a
1 changed files with 8 additions and 6 deletions
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14
drivers/misc/mei/hw-me.c
View file

@ -1293,12 +1293,14 @@ 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);
schedule_work(&dev->reset_work);
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;
}
}