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mei: check if the hardware reset succeeded

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The hw may have multiple steps for resetting
so we need to check if it has really succeeded.

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
2013-06-23 10:42:49 +03:00
committed by Greg Kroah-Hartman
parent 206ecfc211
commit c20c68d535
3 changed files with 12 additions and 5 deletions
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8
drivers/misc/mei/init.c
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@@ -132,13 +132,19 @@ EXPORT_SYMBOL_GPL(mei_start);
void mei_reset(struct mei_device *dev, int interrupts_enabled)
{
bool unexpected;
int ret;
unexpected = (dev->dev_state != MEI_DEV_INITIALIZING &&
dev->dev_state != MEI_DEV_DISABLED &&
dev->dev_state != MEI_DEV_POWER_DOWN &&
dev->dev_state != MEI_DEV_POWER_UP);
mei_hw_reset(dev, interrupts_enabled);
ret = mei_hw_reset(dev, interrupts_enabled);
if (ret) {
dev_err(&dev->pdev->dev, "hw reset failed disabling the device\n");
interrupts_enabled = false;
dev->dev_state = MEI_DEV_DISABLED;
}
dev->hbm_state = MEI_HBM_IDLE;