diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 66b04194aa9f8..82f9a6a814ae8 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -2237,8 +2237,7 @@ static int mgslpc_ioctl(struct tty_struct *tty,
 	if (mgslpc_paranoia_check(info, tty->name, "mgslpc_ioctl"))
 		return -ENODEV;
 
-	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
-	    (cmd != TIOCMIWAIT)) {
+	if (cmd != TIOCMIWAIT) {
 		if (tty_io_error(tty))
 		    return -EIO;
 	}
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index fbdf4d01c6a9c..d55c858d6058b 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -2959,8 +2959,7 @@ static int mgsl_ioctl(struct tty_struct *tty,
 	if (mgsl_paranoia_check(info, tty->name, "mgsl_ioctl"))
 		return -ENODEV;
 
-	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
-	    (cmd != TIOCMIWAIT)) {
+	if (cmd != TIOCMIWAIT) {
 		if (tty_io_error(tty))
 		    return -EIO;
 	}
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index a94086597ebd6..b8287a0103365 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -1029,8 +1029,7 @@ static int ioctl(struct tty_struct *tty,
 		return -ENODEV;
 	DBGINFO(("%s ioctl() cmd=%08X\n", info->device_name, cmd));
 
-	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
-	    (cmd != TIOCMIWAIT)) {
+	if (cmd != TIOCMIWAIT) {
 		if (tty_io_error(tty))
 		    return -EIO;
 	}
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
index 1e4d5b9c981a4..fcb91bf7a15ba 100644
--- a/drivers/tty/synclinkmp.c
+++ b/drivers/tty/synclinkmp.c
@@ -1259,8 +1259,7 @@ static int ioctl(struct tty_struct *tty,
 	if (sanity_check(info, tty->name, "ioctl"))
 		return -ENODEV;
 
-	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
-	    (cmd != TIOCMIWAIT)) {
+	if (cmd != TIOCMIWAIT) {
 		if (tty_io_error(tty))
 		    return -EIO;
 	}