From: Tomas Winkler Date: Sun, 23 Jun 2013 19:49:04 +0000 (+0300) Subject: mei: check whether hw start has succeeded X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9049f7932109f3fe189ffa8028f2e23f06a9bd0b;p=linux-beck.git mei: check whether hw start has succeeded hw start may fail therefore the reset flow has to check for the return value Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 15253886f37e..6fc573cef178 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -181,7 +181,12 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled) return; } - mei_hw_start(dev); + ret = mei_hw_start(dev); + if (ret) { + dev_err(&dev->pdev->dev, "hw_start failed disabling the device\n"); + dev->dev_state = MEI_DEV_DISABLED; + return; + } dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n"); /* link is established * start sending messages. */ diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 1aa499782abe..7b918b2fb894 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -544,9 +544,9 @@ static inline int mei_hw_reset(struct mei_device *dev, bool enable) return dev->ops->hw_reset(dev, enable); } -static inline void mei_hw_start(struct mei_device *dev) +static inline int mei_hw_start(struct mei_device *dev) { - dev->ops->hw_start(dev); + return dev->ops->hw_start(dev); } static inline void mei_clear_interrupts(struct mei_device *dev)