[WATCHDOG] use ENOTTY instead of ENOIOCTLCMD in ioctl()

Return ENOTTY instead of ENOIOCTLCMD in user-visible ioctl() results

The watchdog drivers used to return ENOIOCTLCMD for bad ioctl() commands.
ENOIOCTLCMD should not be visible by the user, so use ENOTTY instead.

Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/char/watchdog/sc520_wdt.c b/drivers/char/watchdog/sc520_wdt.c
index 2c7c9db71be8..caec37ba750a 100644
--- a/drivers/char/watchdog/sc520_wdt.c
+++ b/drivers/char/watchdog/sc520_wdt.c
@@ -290,7 +290,7 @@ static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
         switch(cmd)
         {
                 default:
-                        return -ENOIOCTLCMD;
+                        return -ENOTTY;
                 case WDIOC_GETSUPPORT:
                         return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
                 case WDIOC_GETSTATUS: