serial: export fsl8250_handle_irq

[deliverable/linux.git] / fs / dax.c

diff --git a/fs/dax.c b/fs/dax.c
index bff20cc5613040342c898ff56792abab4bbc61ab..d1e5cb7311a1de295ecd4348360a9a9947e71142 100644 (file)
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -174,8 +174,10 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
                else
                        len = iov_iter_zero(max - pos, iter);
 
-               if (!len)
+               if (!len) {
+                       retval = -EFAULT;
                        break;
+               }
 
                pos += len;
                addr += len;