From: Ian Kent <raven@themaw.net>

The function check_dev_ioctl_version() returns an error code upon fail but
it isn't captured and returned in validate_dev_ioctl() as it should be.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/autofs4/dev-ioctl.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -puN fs/autofs4/dev-ioctl.c~autofs4-collect-version-check-return fs/autofs4/dev-ioctl.c
--- a/fs/autofs4/dev-ioctl.c~autofs4-collect-version-check-return
+++ a/fs/autofs4/dev-ioctl.c
@@ -116,9 +116,9 @@ static inline void free_dev_ioctl(struct
  */
 static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
 {
-	int err = -EINVAL;
+	int err;
 
-	if (check_dev_ioctl_version(cmd, param)) {
+	if ((err = check_dev_ioctl_version(cmd, param))) {
 		AUTOFS_WARN("invalid device control module version "
 		     "supplied for cmd(0x%08x)", cmd);
 		goto out;
_