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mei: add mei_stop function to stop mei device

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mei_stop calls mei_reset with disabling the interrupts.
It will have the same effect as the open code it replaces in the mei_remove.

The reset sequence on remove is required for the Lynx Point LP devices
to clean the reset state.

mei_stop is called from mei_pci_suspend and mei_remove functions

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler
2013-03-10 13:56:08 +02:00
committed by Greg Kroah-Hartman
parent 3d374d09f1
commit 7cb035d9e6
3 changed files with 26 additions and 45 deletions
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18
drivers/misc/mei/init.c
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@@ -183,6 +183,24 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled)
mei_cl_all_write_clear(dev);
}
void mei_stop(struct mei_device *dev)
{
dev_dbg(&dev->pdev->dev, "stopping the device.\n");
mutex_lock(&dev->device_lock);
cancel_delayed_work(&dev->timer_work);
mei_wd_stop(dev);
dev->dev_state = MEI_DEV_POWER_DOWN;
mei_reset(dev, 0);
mutex_unlock(&dev->device_lock);
flush_scheduled_work();
}