xiaomi-sm8450/android_kernel_xiaomi_sm8450
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mei: make return values consistent across the driver

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1. Propagate ENOTTY  to user space if the client is not present
in the system
2. Use ETIME consistently on timeouts
3. Return EIO on write failures
4. Return ENODEV on recoverable device failures such as resets

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Usyskin
2014-02-19 17:35:49 +02:00
committed by Greg Kroah-Hartman
parent 9d098192c3
commit 7ca96aa278
8 changed files with 33 additions and 33 deletions
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4
drivers/misc/mei/interrupt.c
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@@ -350,7 +350,7 @@ int mei_irq_read_handler(struct mei_device *dev,
dev_err(&dev->pdev->dev, "less data available than length=%08x.\n",
*slots);
/* we can't read the message */
ret = -ERANGE;
ret = -EBADMSG;
goto end;
}
@@ -483,7 +483,7 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
if (mei_wd_send(dev))
dev_dbg(&dev->pdev->dev, "wd send failed.\n");
else if (mei_cl_flow_ctrl_reduce(&dev->wd_cl))
return -ENODEV;
return -EIO;
dev->wd_pending = false;
}
}