video: pxa3xx-gcu: Return -EFAULT when copy_from_user() fails

Return -EFAULT instead of number of bytes that could not be copied if
copy_from_user() fails.

Also fix a typo in the comments.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/drivers/video/pxa3xx-gcu.c b/drivers/video/pxa3xx-gcu.c
index b81168df253dbff37e562dc8ff70e0872a57a686..cf4beb9dc9bb5a9603679eaa35dc0e7e652d1fb1 100644 (file)
--- a/drivers/video/pxa3xx-gcu.c
+++ b/drivers/video/pxa3xx-gcu.c
@@ -1,5 +1,5 @@
 /*
- *  pxa3xx-gc.c - Linux kernel module for PXA3xx graphics controllers
+ *  pxa3xx-gcu.c - Linux kernel module for PXA3xx graphics controllers
  *
  *  This driver needs a DirectFB counterpart in user space, communication
  *  is handled via mmap()ed memory areas and an ioctl.
@@ -421,7 +421,7 @@ pxa3xx_gcu_misc_write(struct file *filp, const char *buff,
                buffer->next = priv->free;
                priv->free = buffer;
                spin_unlock_irqrestore(&priv->spinlock, flags);
-               return ret;
+               return -EFAULT;
        }
 
        buffer->length = words;