diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index ec55336..b59feea 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1341,6 +1341,8 @@ struct vc_data *vc_deallocate(unsigned int currcons)
  *	VT102 emulator
  */
 
+enum { EPecma = 0, EPdec, EPeq, EPgt, EPlt};
+
 #define set_kbd(vc, x)	vt_set_kbd_mode_bit((vc)->vc_num, (x))
 #define clr_kbd(vc, x)	vt_clr_kbd_mode_bit((vc)->vc_num, (x))
 #define is_kbd(vc, x)	vt_get_kbd_mode_bit((vc)->vc_num, (x))
@@ -1814,7 +1816,7 @@ static void set_mode(struct vc_data *vc, int on_off)
 	int i;
 
 	for (i = 0; i <= vc->vc_npar; i++)
-		if (vc->vc_ques) {
+		if (vc->vc_priv == EPdec) {
 			switch(vc->vc_par[i]) {	/* DEC private modes set/reset */
 			case 1:			/* Cursor keys send ^[Ox/^[[x */
 				if (on_off)
@@ -2030,7 +2032,7 @@ static void reset_terminal(struct vc_data *vc, int do_clear)
 	vc->vc_top		= 0;
 	vc->vc_bottom		= vc->vc_rows;
 	vc->vc_state		= ESnormal;
-	vc->vc_ques		= 0;
+	vc->vc_priv		= EPecma;
 	vc->vc_translate	= set_translate(LAT1_MAP, vc);
 	vc->vc_G0_charset	= LAT1_MAP;
 	vc->vc_G1_charset	= GRAF_MAP;
@@ -2234,8 +2236,8 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
 			vc->vc_state=ESfunckey;
 			return;
 		}
-		vc->vc_ques = (c == '?');
-		if (vc->vc_ques)
+		vc->vc_priv = (c == '?') ? EPdec : EPecma;
+		if (vc->vc_priv != EPecma)
 			return;
 		/* fall through */
 	case ESgetpars:
@@ -2256,7 +2258,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
 			set_mode(vc, 0);
 			return;
 		case 'c':
-			if (vc->vc_ques) {
+			if (vc->vc_priv == EPdec) {
 				if (vc->vc_par[0])
 					vc->vc_cursor_type = vc->vc_par[0] | (vc->vc_par[1] << 8) | (vc->vc_par[2] << 16);
 				else
@@ -2265,7 +2267,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
 			}
 			break;
 		case 'm':
-			if (vc->vc_ques) {
+			if (vc->vc_priv == EPdec) {
 				clear_selection();
 				if (vc->vc_par[0])
 					vc->vc_complement_mask = vc->vc_par[0] << 8 | vc->vc_par[1];
@@ -2275,7 +2277,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
 			}
 			break;
 		case 'n':
-			if (!vc->vc_ques) {
+			if (vc->vc_priv == EPecma) {
 				if (vc->vc_par[0] == 5)
 					status_report(tty);
 				else if (vc->vc_par[0] == 6)
@@ -2283,8 +2285,8 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
 			}
 			return;
 		}
-		if (vc->vc_ques) {
-			vc->vc_ques = 0;
+		if (vc->vc_priv != EPecma) {
+			vc->vc_priv = EPecma;
 			return;
 		}
 		switch(c) {