From: Alan Cox <alan@redhat.com>

This is fairly self explanatory - ENOIOCTLCMD is an internal code outside
of the -1 to -511 range.  The correct return for an unknown ioctl is
-ENOTTY although some Linux devices return the incorrect -EINVAL result.

Patch-By: Alan Cox <alan@redhat.com>
OSDL Developer Certificate of Origin 1.0 included herein by reference

Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 25-akpm/arch/i386/kernel/cpu/mtrr/if.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN arch/i386/kernel/cpu/mtrr/if.c~fix-bogus-ioctl-return-in-mtrr arch/i386/kernel/cpu/mtrr/if.c
--- 25/arch/i386/kernel/cpu/mtrr/if.c~fix-bogus-ioctl-return-in-mtrr	Tue Jul 27 16:31:04 2004
+++ 25-akpm/arch/i386/kernel/cpu/mtrr/if.c	Tue Jul 27 16:31:04 2004
@@ -160,7 +160,7 @@ mtrr_ioctl(struct inode *inode, struct f
 
 	switch (cmd) {
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	case MTRRIOC_ADD_ENTRY:
 		if (!capable(CAP_SYS_ADMIN))
 			return -EPERM;
_