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| author | Tomas Winkler <tomas.winkler@intel.com> | 2013-06-23 10:42:49 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-24 16:32:31 -0700 |
| commit | c20c68d535409f2ff000415d5e0578529c016521 (patch) | |
| tree | 2403718e9c823d1845e33382a81bccfcb0653269 /drivers/misc/mei/init.c | |
| parent | 206ecfc21121aa272f3f9fa23e1ed252a12e8a5c (diff) | |
| download | lwn-c20c68d535409f2ff000415d5e0578529c016521.tar.gz lwn-c20c68d535409f2ff000415d5e0578529c016521.zip | |
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>
Diffstat (limited to 'drivers/misc/mei/init.c')
| -rw-r--r-- | drivers/misc/mei/init.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 79e9e1c30562..15253886f37e 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -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; |