mei: check if the hardware reset succeeded
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>
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 79e9e1c..1525388 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -132,13 +132,19 @@
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;