tty: n_gsm: convert to u8 and size_t

Switch character types to u8 and sizes to size_t. To conform to
characters/sizes in the rest of the tty layer.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20231206073712.17776-20-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 8 insertions, 9 deletions

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index a3ab3946e4ad..4036566febcb 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -124,8 +124,8 @@ struct gsm_msg {
 	u8 addr;		/* DLCI address + flags */
 	u8 ctrl;		/* Control byte + flags */
 	unsigned int len;	/* Length of data block (can be zero) */
-	unsigned char *data;	/* Points into buffer but not at the start */
-	unsigned char buffer[];
+	u8 *data;	/* Points into buffer but not at the start */
+	u8 buffer[];
 };
 
 enum gsm_dlci_state {
@@ -283,7 +283,7 @@ struct gsm_mux {
 	/* Bits for GSM mode decoding */
 
 	/* Framing Layer */
-	unsigned char *buf;
+	u8 *buf;
 	enum gsm_mux_state state;
 	unsigned int len;
 	unsigned int address;
@@ -2856,7 +2856,7 @@ invalid:
  *	Receive bytes in gsm mode 0
  */
 
-static void gsm0_receive(struct gsm_mux *gsm, unsigned char c)
+static void gsm0_receive(struct gsm_mux *gsm, u8 c)
 {
 	unsigned int len;
 
@@ -2947,7 +2947,7 @@ static void gsm0_receive(struct gsm_mux *gsm, unsigned char c)
  *	Receive bytes in mode 1 (Advanced option)
  */
 
-static void gsm1_receive(struct gsm_mux *gsm, unsigned char c)
+static void gsm1_receive(struct gsm_mux *gsm, u8 c)
 {
 	/* handle XON/XOFF */
 	if ((c & ISO_IEC_646_MASK) == XON) {
@@ -3541,7 +3541,7 @@ static void gsmld_receive_buf(struct tty_struct *tty, const u8 *cp,
 			      const u8 *fp, size_t count)
 {
 	struct gsm_mux *gsm = tty->disc_data;
-	char flags = TTY_NORMAL;
+	u8 flags = TTY_NORMAL;
 
 	if (debug & DBG_DATA)
 		gsm_hex_dump_bytes(__func__, cp, count);
@@ -3711,7 +3711,7 @@ static ssize_t gsmld_write(struct tty_struct *tty, struct file *file,
 {
 	struct gsm_mux *gsm = tty->disc_data;
 	unsigned long flags;
-	int space;
+	size_t space;
 	int ret;
 
 	if (!gsm)
@@ -3909,8 +3909,7 @@ static void gsm_mux_net_tx_timeout(struct net_device *net, unsigned int txqueue)
 	net->stats.tx_errors++;
 }
 
-static void gsm_mux_rx_netchar(struct gsm_dlci *dlci,
-				const unsigned char *in_buf, int size)
+static void gsm_mux_rx_netchar(struct gsm_dlci *dlci, const u8 *in_buf, int size)
 {
 	struct net_device *net = dlci->net;
 	struct sk_buff *skb;