diff --git a/drivers/char/watchdog/acquirewdt.c b/drivers/char/watchdog/acquirewdt.c
index c77fe3c..154d67e 100644
--- a/drivers/char/watchdog/acquirewdt.c
+++ b/drivers/char/watchdog/acquirewdt.c
@@ -183,7 +183,7 @@
 	}
 
 	default:
-	  return -ENOIOCTLCMD;
+	  return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/advantechwdt.c b/drivers/char/watchdog/advantechwdt.c
index 8069be4..9d73276 100644
--- a/drivers/char/watchdog/advantechwdt.c
+++ b/drivers/char/watchdog/advantechwdt.c
@@ -176,7 +176,7 @@
 	}
 
 	default:
-	  return -ENOIOCTLCMD;
+	  return -ENOTTY;
 	}
 	return 0;
 }
diff --git a/drivers/char/watchdog/alim1535_wdt.c b/drivers/char/watchdog/alim1535_wdt.c
index 0b2c8e8..01b0d13 100644
--- a/drivers/char/watchdog/alim1535_wdt.c
+++ b/drivers/char/watchdog/alim1535_wdt.c
@@ -236,7 +236,7 @@
 			return put_user(timeout, p);
 
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/alim7101_wdt.c b/drivers/char/watchdog/alim7101_wdt.c
index 383f9bf..5948863 100644
--- a/drivers/char/watchdog/alim7101_wdt.c
+++ b/drivers/char/watchdog/alim7101_wdt.c
@@ -277,7 +277,7 @@
 		case WDIOC_GETTIMEOUT:
 			return put_user(timeout, p);
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/at91_wdt.c b/drivers/char/watchdog/at91_wdt.c
index cc26671..4e7a114 100644
--- a/drivers/char/watchdog/at91_wdt.c
+++ b/drivers/char/watchdog/at91_wdt.c
@@ -168,7 +168,7 @@
 			return 0;
 
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/booke_wdt.c b/drivers/char/watchdog/booke_wdt.c
index e3cefc5..4889022 100644
--- a/drivers/char/watchdog/booke_wdt.c
+++ b/drivers/char/watchdog/booke_wdt.c
@@ -125,7 +125,7 @@
 			return -EINVAL;
 		return 0;
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 
 	return 0;
diff --git a/drivers/char/watchdog/cpu5wdt.c b/drivers/char/watchdog/cpu5wdt.c
index 04c7e49..00bdabb 100644
--- a/drivers/char/watchdog/cpu5wdt.c
+++ b/drivers/char/watchdog/cpu5wdt.c
@@ -183,7 +183,7 @@
 			}
 			break;
 		default:
-    			return -ENOIOCTLCMD;
+    			return -ENOTTY;
 	}
 	return 0;
 }
diff --git a/drivers/char/watchdog/ep93xx_wdt.c b/drivers/char/watchdog/ep93xx_wdt.c
index 77c8a95..01cf123 100644
--- a/drivers/char/watchdog/ep93xx_wdt.c
+++ b/drivers/char/watchdog/ep93xx_wdt.c
@@ -144,7 +144,7 @@
 ep93xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 		 unsigned long arg)
 {
-	int ret = -ENOIOCTLCMD;
+	int ret = -ENOTTY;
 
 	switch (cmd) {
 	case WDIOC_GETSUPPORT:
diff --git a/drivers/char/watchdog/eurotechwdt.c b/drivers/char/watchdog/eurotechwdt.c
index 62dbccb..4f42697 100644
--- a/drivers/char/watchdog/eurotechwdt.c
+++ b/drivers/char/watchdog/eurotechwdt.c
@@ -240,7 +240,7 @@
 
 	switch(cmd) {
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 
 	case WDIOC_GETSUPPORT:
 		return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
diff --git a/drivers/char/watchdog/i6300esb.c b/drivers/char/watchdog/i6300esb.c
index 870539e..fb64df4 100644
--- a/drivers/char/watchdog/i6300esb.c
+++ b/drivers/char/watchdog/i6300esb.c
@@ -315,7 +315,7 @@
                         return put_user(heartbeat, p);
 
                 default:
-                        return -ENOIOCTLCMD;
+                        return -ENOTTY;
         }
 }
 
diff --git a/drivers/char/watchdog/i8xx_tco.c b/drivers/char/watchdog/i8xx_tco.c
index 3c6daca..e0627d7 100644
--- a/drivers/char/watchdog/i8xx_tco.c
+++ b/drivers/char/watchdog/i8xx_tco.c
@@ -356,7 +356,7 @@
 		}
 
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/ib700wdt.c b/drivers/char/watchdog/ib700wdt.c
index fd95f73..c1ed209 100644
--- a/drivers/char/watchdog/ib700wdt.c
+++ b/drivers/char/watchdog/ib700wdt.c
@@ -199,7 +199,7 @@
 	  break;
 
 	default:
-	  return -ENOIOCTLCMD;
+	  return -ENOTTY;
 	}
 	return 0;
 }
diff --git a/drivers/char/watchdog/ibmasr.c b/drivers/char/watchdog/ibmasr.c
index 26ceee7..dd6760f 100644
--- a/drivers/char/watchdog/ibmasr.c
+++ b/drivers/char/watchdog/ibmasr.c
@@ -295,7 +295,7 @@
 		}
 	}
 
-	return -ENOIOCTLCMD;
+	return -ENOTTY;
 }
 
 static int asr_open(struct inode *inode, struct file *file)
diff --git a/drivers/char/watchdog/indydog.c b/drivers/char/watchdog/indydog.c
index dacc1c2..0bc2393 100644
--- a/drivers/char/watchdog/indydog.c
+++ b/drivers/char/watchdog/indydog.c
@@ -112,7 +112,7 @@
 
 	switch (cmd) {
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 		case WDIOC_GETSUPPORT:
 			if (copy_to_user((struct watchdog_info *)arg,
 					 &ident, sizeof(ident)))
diff --git a/drivers/char/watchdog/ixp2000_wdt.c b/drivers/char/watchdog/ixp2000_wdt.c
index 6929088..c91d9a6 100644
--- a/drivers/char/watchdog/ixp2000_wdt.c
+++ b/drivers/char/watchdog/ixp2000_wdt.c
@@ -107,7 +107,7 @@
 ixp2000_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 			unsigned long arg)
 {
-	int ret = -ENOIOCTLCMD;
+	int ret = -ENOTTY;
 	int time;
 
 	switch (cmd) {
diff --git a/drivers/char/watchdog/ixp4xx_wdt.c b/drivers/char/watchdog/ixp4xx_wdt.c
index 9db5cf2..db477f7 100644
--- a/drivers/char/watchdog/ixp4xx_wdt.c
+++ b/drivers/char/watchdog/ixp4xx_wdt.c
@@ -102,7 +102,7 @@
 ixp4xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 			unsigned long arg)
 {
-	int ret = -ENOIOCTLCMD;
+	int ret = -ENOTTY;
 	int time;
 
 	switch (cmd) {
diff --git a/drivers/char/watchdog/machzwd.c b/drivers/char/watchdog/machzwd.c
index 23734e0..ed2b6e1 100644
--- a/drivers/char/watchdog/machzwd.c
+++ b/drivers/char/watchdog/machzwd.c
@@ -329,7 +329,7 @@
 			break;
 
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 
 	return 0;
diff --git a/drivers/char/watchdog/mixcomwd.c b/drivers/char/watchdog/mixcomwd.c
index ae94332..c2dac0a 100644
--- a/drivers/char/watchdog/mixcomwd.c
+++ b/drivers/char/watchdog/mixcomwd.c
@@ -185,7 +185,7 @@
 			mixcomwd_ping();
 			break;
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 	return 0;
 }
diff --git a/drivers/char/watchdog/mpc83xx_wdt.c b/drivers/char/watchdog/mpc83xx_wdt.c
index a480903..18ca752 100644
--- a/drivers/char/watchdog/mpc83xx_wdt.c
+++ b/drivers/char/watchdog/mpc83xx_wdt.c
@@ -125,7 +125,7 @@
 	case WDIOC_GETTIMEOUT:
 		return put_user(timeout_sec, p);
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/mpc8xx_wdt.c b/drivers/char/watchdog/mpc8xx_wdt.c
index 35dd9e6..8aaed10 100644
--- a/drivers/char/watchdog/mpc8xx_wdt.c
+++ b/drivers/char/watchdog/mpc8xx_wdt.c
@@ -126,7 +126,7 @@
 		break;
 
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 
 	return 0;
diff --git a/drivers/char/watchdog/mpcore_wdt.c b/drivers/char/watchdog/mpcore_wdt.c
index 54b3c56..02d336a 100644
--- a/drivers/char/watchdog/mpcore_wdt.c
+++ b/drivers/char/watchdog/mpcore_wdt.c
@@ -221,7 +221,7 @@
 	} uarg;
 
 	if (_IOC_DIR(cmd) && _IOC_SIZE(cmd) > sizeof(uarg))
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 
 	if (_IOC_DIR(cmd) & _IOC_WRITE) {
 		ret = copy_from_user(&uarg, (void __user *)arg, _IOC_SIZE(cmd));
@@ -271,7 +271,7 @@
 		break;
 
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 
 	if (ret == 0 && _IOC_DIR(cmd) & _IOC_READ) {
diff --git a/drivers/char/watchdog/mv64x60_wdt.c b/drivers/char/watchdog/mv64x60_wdt.c
index 5c8fab3..b887cdb 100644
--- a/drivers/char/watchdog/mv64x60_wdt.c
+++ b/drivers/char/watchdog/mv64x60_wdt.c
@@ -160,7 +160,7 @@
 		break;
 
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 
 	return 0;
diff --git a/drivers/char/watchdog/pcwd.c b/drivers/char/watchdog/pcwd.c
index cd7d1b6..6f8515d 100644
--- a/drivers/char/watchdog/pcwd.c
+++ b/drivers/char/watchdog/pcwd.c
@@ -572,7 +572,7 @@
 
 	switch(cmd) {
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 
 	case WDIOC_GETSUPPORT:
 		if(copy_to_user(argp, &ident, sizeof(ident)))
diff --git a/drivers/char/watchdog/pcwd_pci.c b/drivers/char/watchdog/pcwd_pci.c
index c7cfd6d..2de6e49 100644
--- a/drivers/char/watchdog/pcwd_pci.c
+++ b/drivers/char/watchdog/pcwd_pci.c
@@ -541,7 +541,7 @@
 		}
 
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
index b7ae73d..77662cb 100644
--- a/drivers/char/watchdog/pcwd_usb.c
+++ b/drivers/char/watchdog/pcwd_usb.c
@@ -445,7 +445,7 @@
 		}
 
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/s3c2410_wdt.c b/drivers/char/watchdog/s3c2410_wdt.c
index a49f1f2..b36a04a 100644
--- a/drivers/char/watchdog/s3c2410_wdt.c
+++ b/drivers/char/watchdog/s3c2410_wdt.c
@@ -288,7 +288,7 @@
 
 	switch (cmd) {
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 
 		case WDIOC_GETSUPPORT:
 			return copy_to_user(argp, &s3c2410_wdt_ident,
diff --git a/drivers/char/watchdog/sa1100_wdt.c b/drivers/char/watchdog/sa1100_wdt.c
index 1fc16d9..33c1137 100644
--- a/drivers/char/watchdog/sa1100_wdt.c
+++ b/drivers/char/watchdog/sa1100_wdt.c
@@ -90,7 +90,7 @@
 static int sa1100dog_ioctl(struct inode *inode, struct file *file,
 	unsigned int cmd, unsigned long arg)
 {
-	int ret = -ENOIOCTLCMD;
+	int ret = -ENOTTY;
 	int time;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
diff --git a/drivers/char/watchdog/sbc60xxwdt.c b/drivers/char/watchdog/sbc60xxwdt.c
index 4663c2f..c7b2045 100644
--- a/drivers/char/watchdog/sbc60xxwdt.c
+++ b/drivers/char/watchdog/sbc60xxwdt.c
@@ -235,7 +235,7 @@
 	switch(cmd)
 	{
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 		case WDIOC_GETSUPPORT:
 			return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
 		case WDIOC_GETSTATUS:
diff --git a/drivers/char/watchdog/sbc_epx_c3.c b/drivers/char/watchdog/sbc_epx_c3.c
index bfc475d..8882b42 100644
--- a/drivers/char/watchdog/sbc_epx_c3.c
+++ b/drivers/char/watchdog/sbc_epx_c3.c
@@ -141,7 +141,7 @@
 
 		return retval;
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/sc1200wdt.c b/drivers/char/watchdog/sc1200wdt.c
index 7c3cf29..d8d0f28 100644
--- a/drivers/char/watchdog/sc1200wdt.c
+++ b/drivers/char/watchdog/sc1200wdt.c
@@ -180,7 +180,7 @@
 
 	switch (cmd) {
 		default:
-			return -ENOIOCTLCMD;	/* Keep Pavel Machek amused ;) */
+			return -ENOTTY;
 
 		case WDIOC_GETSUPPORT:
 			if (copy_to_user(argp, &ident, sizeof ident))
diff --git a/drivers/char/watchdog/sc520_wdt.c b/drivers/char/watchdog/sc520_wdt.c
index 2c7c9db..caec37b 100644
--- a/drivers/char/watchdog/sc520_wdt.c
+++ b/drivers/char/watchdog/sc520_wdt.c
@@ -290,7 +290,7 @@
 	switch(cmd)
 	{
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 		case WDIOC_GETSUPPORT:
 			return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
 		case WDIOC_GETSTATUS:
diff --git a/drivers/char/watchdog/scx200_wdt.c b/drivers/char/watchdog/scx200_wdt.c
index c561299..fc0e034 100644
--- a/drivers/char/watchdog/scx200_wdt.c
+++ b/drivers/char/watchdog/scx200_wdt.c
@@ -166,7 +166,7 @@
 
 	switch (cmd) {
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	case WDIOC_GETSUPPORT:
 		if(copy_to_user(argp, &ident, sizeof(ident)))
 			return -EFAULT;
diff --git a/drivers/char/watchdog/shwdt.c b/drivers/char/watchdog/shwdt.c
index e5b8c64..dc40362 100644
--- a/drivers/char/watchdog/shwdt.c
+++ b/drivers/char/watchdog/shwdt.c
@@ -360,7 +360,7 @@
 
 			return retval;
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 
 	return 0;
diff --git a/drivers/char/watchdog/softdog.c b/drivers/char/watchdog/softdog.c
index ef8da51..4067e1f 100644
--- a/drivers/char/watchdog/softdog.c
+++ b/drivers/char/watchdog/softdog.c
@@ -203,7 +203,7 @@
 	};
 	switch (cmd) {
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 		case WDIOC_GETSUPPORT:
 			return copy_to_user(argp, &ident,
 				sizeof(ident)) ? -EFAULT : 0;
diff --git a/drivers/char/watchdog/w83627hf_wdt.c b/drivers/char/watchdog/w83627hf_wdt.c
index 13f16d4..b4adc52 100644
--- a/drivers/char/watchdog/w83627hf_wdt.c
+++ b/drivers/char/watchdog/w83627hf_wdt.c
@@ -223,7 +223,7 @@
 	}
 
 	default:
-	  return -ENOIOCTLCMD;
+	  return -ENOTTY;
 	}
 	return 0;
 }
diff --git a/drivers/char/watchdog/w83877f_wdt.c b/drivers/char/watchdog/w83877f_wdt.c
index ccf6c09..b0e5f84 100644
--- a/drivers/char/watchdog/w83877f_wdt.c
+++ b/drivers/char/watchdog/w83877f_wdt.c
@@ -252,7 +252,7 @@
 	switch(cmd)
 	{
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 		case WDIOC_GETSUPPORT:
 			return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
 		case WDIOC_GETSTATUS:
diff --git a/drivers/char/watchdog/w83977f_wdt.c b/drivers/char/watchdog/w83977f_wdt.c
index 98f4e17..2c8d5d8 100644
--- a/drivers/char/watchdog/w83977f_wdt.c
+++ b/drivers/char/watchdog/w83977f_wdt.c
@@ -393,7 +393,7 @@
 	switch(cmd)
 	{
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 
 	case WDIOC_GETSUPPORT:
 		return copy_to_user(uarg.ident, &ident, sizeof(ident)) ? -EFAULT : 0;
diff --git a/drivers/char/watchdog/wafer5823wdt.c b/drivers/char/watchdog/wafer5823wdt.c
index 2bb6a9d..163e028 100644
--- a/drivers/char/watchdog/wafer5823wdt.c
+++ b/drivers/char/watchdog/wafer5823wdt.c
@@ -174,7 +174,7 @@
 	}
 
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 	return 0;
 }
diff --git a/drivers/char/watchdog/wdrtas.c b/drivers/char/watchdog/wdrtas.c
index 5c38cdf..1d64e27 100644
--- a/drivers/char/watchdog/wdrtas.c
+++ b/drivers/char/watchdog/wdrtas.c
@@ -385,7 +385,7 @@
 		return put_user(wdrtas_interval, argp);
 
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 	}
 }
 
diff --git a/drivers/char/watchdog/wdt.c b/drivers/char/watchdog/wdt.c
index 70be81e..13f23f4 100644
--- a/drivers/char/watchdog/wdt.c
+++ b/drivers/char/watchdog/wdt.c
@@ -341,7 +341,7 @@
 	switch(cmd)
 	{
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 		case WDIOC_GETSUPPORT:
 			return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
 
diff --git a/drivers/char/watchdog/wdt285.c b/drivers/char/watchdog/wdt285.c
index 6555fb8..89a249e 100644
--- a/drivers/char/watchdog/wdt285.c
+++ b/drivers/char/watchdog/wdt285.c
@@ -137,7 +137,7 @@
 	       unsigned long arg)
 {
 	unsigned int new_margin;
-	int ret = -ENOIOCTLCMD;
+	int ret = -ENOTTY;
 
 	switch(cmd) {
 	case WDIOC_GETSUPPORT:
diff --git a/drivers/char/watchdog/wdt977.c b/drivers/char/watchdog/wdt977.c
index a0935bc..6253041 100644
--- a/drivers/char/watchdog/wdt977.c
+++ b/drivers/char/watchdog/wdt977.c
@@ -361,7 +361,7 @@
 	switch(cmd)
 	{
 	default:
-		return -ENOIOCTLCMD;
+		return -ENOTTY;
 
 	case WDIOC_GETSUPPORT:
 		return copy_to_user(uarg.ident, &ident,
diff --git a/drivers/char/watchdog/wdt_pci.c b/drivers/char/watchdog/wdt_pci.c
index 5918ca2..74d8cf8 100644
--- a/drivers/char/watchdog/wdt_pci.c
+++ b/drivers/char/watchdog/wdt_pci.c
@@ -386,7 +386,7 @@
 	switch(cmd)
 	{
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 		case WDIOC_GETSUPPORT:
 			return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;