[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/pcwd.c b/drivers/char/watchdog/pcwd.c
index cd7d1b6a5d9f..6f8515db5b07 100644
--- a/drivers/char/watchdog/pcwd.c
+++ b/drivers/char/watchdog/pcwd.c
@@ -572,7 +572,7 @@ static int pcwd_ioctl(struct inode *inode, struct file *file,
 
         switch(cmd) {
         default:
-                return -ENOIOCTLCMD;
+                return -ENOTTY;
 
         case WDIOC_GETSUPPORT:
                 if(copy_to_user(argp, &ident, sizeof(ident)))