Input: serio_raw - return proper result when serio_raw_write fails
If serio_raw_write was always returning number of bytes successfully sent to serio port and never signalled error condition to the caller. Change it so that for completely failed transfers appropriate error code returned to the caller (partially successful writes still return number of bytes transferred). Reported-by: Che-liang Chiou <clchiou@chromium.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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@ -224,7 +224,7 @@ static ssize_t serio_raw_write(struct file *file, const char __user *buffer,
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out:
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mutex_unlock(&serio_raw_mutex);
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return written;
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return written ?: retval;
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}
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static unsigned int serio_raw_poll(struct file *file, poll_table *wait)
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