5 files changed, 13 insertions, 13 deletions

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 5fea02cfb0cc..477403ecc445 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -2424,7 +2424,7 @@ static void gsmld_detach_gsm(struct tty_struct *tty, struct gsm_mux *gsm)
 }
 
 static void gsmld_receive_buf(struct tty_struct *tty, const unsigned char *cp,
-			      char *fp, int count)
+			      const char *fp, int count)
 {
 	struct gsm_mux *gsm = tty->disc_data;
 	char flags = TTY_NORMAL;
diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index b0f33e8ac819..62b1d1a6e0f1 100644
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -358,7 +358,7 @@ static void n_hdlc_tty_wakeup(struct tty_struct *tty)
  * interpreted as one HDLC frame.
  */
 static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
-			       char *flags, int count)
+			       const char *flags, int count)
 {
 	register struct n_hdlc *n_hdlc = tty->disc_data;
 	register struct n_hdlc_buf *buf;
diff --git a/drivers/tty/n_null.c b/drivers/tty/n_null.c
index b8f67b5f1ef8..2ff373d2f98d 100644
--- a/drivers/tty/n_null.c
+++ b/drivers/tty/n_null.c
@@ -33,7 +33,7 @@ static ssize_t n_null_write(struct tty_struct *tty, struct file *file,
 }
 
 static void n_null_receivebuf(struct tty_struct *tty,
-				 const unsigned char *cp, char *fp,
+				 const unsigned char *cp, const char *fp,
 				 int cnt)
 {
 }
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 0d93be26c678..c32318da5190 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1474,7 +1474,7 @@ n_tty_receive_char_lnext(struct tty_struct *tty, unsigned char c, char flag)
 
 static void
 n_tty_receive_buf_real_raw(struct tty_struct *tty, const unsigned char *cp,
-			   char *fp, int count)
+			   const char *fp, int count)
 {
 	struct n_tty_data *ldata = tty->disc_data;
 	size_t n, head;
@@ -1494,7 +1494,7 @@ n_tty_receive_buf_real_raw(struct tty_struct *tty, const unsigned char *cp,
 
 static void
 n_tty_receive_buf_raw(struct tty_struct *tty, const unsigned char *cp,
-		      char *fp, int count)
+		      const char *fp, int count)
 {
 	struct n_tty_data *ldata = tty->disc_data;
 	char flag = TTY_NORMAL;
@@ -1511,7 +1511,7 @@ n_tty_receive_buf_raw(struct tty_struct *tty, const unsigned char *cp,
 
 static void
 n_tty_receive_buf_closing(struct tty_struct *tty, const unsigned char *cp,
-			  char *fp, int count)
+			  const char *fp, int count)
 {
 	char flag = TTY_NORMAL;
 
@@ -1524,7 +1524,7 @@ n_tty_receive_buf_closing(struct tty_struct *tty, const unsigned char *cp,
 }
 
 static void n_tty_receive_buf_standard(struct tty_struct *tty,
-		const unsigned char *cp, char *fp, int count)
+		const unsigned char *cp, const char *fp, int count)
 {
 	struct n_tty_data *ldata = tty->disc_data;
 	char flag = TTY_NORMAL;
@@ -1562,7 +1562,7 @@ static void n_tty_receive_buf_standard(struct tty_struct *tty,
 }
 
 static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,
-			  char *fp, int count)
+			  const char *fp, int count)
 {
 	struct n_tty_data *ldata = tty->disc_data;
 	bool preops = I_ISTRIP(tty) || (I_IUCLC(tty) && L_IEXTEN(tty));
@@ -1629,7 +1629,7 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,
  */
 static int
 n_tty_receive_buf_common(struct tty_struct *tty, const unsigned char *cp,
-			 char *fp, int count, int flow)
+			 const char *fp, int count, int flow)
 {
 	struct n_tty_data *ldata = tty->disc_data;
 	int room, n, rcvd = 0, overflow;
@@ -1698,13 +1698,13 @@ n_tty_receive_buf_common(struct tty_struct *tty, const unsigned char *cp,
 }
 
 static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp,
-			      char *fp, int count)
+			      const char *fp, int count)
 {
 	n_tty_receive_buf_common(tty, cp, fp, count, 0);
 }
 
 static int n_tty_receive_buf2(struct tty_struct *tty, const unsigned char *cp,
-			      char *fp, int count)
+			      const char *fp, int count)
 {
 	return n_tty_receive_buf_common(tty, cp, fp, count, 1);
 }
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 9733469a14b2..55b1f1711341 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -455,7 +455,7 @@ EXPORT_SYMBOL_GPL(tty_prepare_flip_string);
  *	Returns the number of bytes processed
  */
 int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
-			  char *f, int count)
+			  const char *f, int count)
 {
 	if (ld->ops->receive_buf2)
 		count = ld->ops->receive_buf2(ld->tty, p, f, count);
@@ -472,7 +472,7 @@ static int
 receive_buf(struct tty_port *port, struct tty_buffer *head, int count)
 {
 	unsigned char *p = char_buf_ptr(head, head->read);
-	char	      *f = NULL;
+	const char *f = NULL;
 	int n;
 
 	if (~head->flags & TTYB_NORMAL)