tty: use u8 for chars

This makes all those 'unsigned char's an explicit 'u8'. This is part of
the continuing unification of chars and flags to be consistent u8.

This approaches tty_port_default_receive_buf(). Flags to be next.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Cc: William Hubbs <w.d.hubbs@gmail.com>
Cc: Chris Brannon <chris@the-brannons.com>
Cc: Kirk Reiser <kirk@reisers.ca>
Cc: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Max Staudt <max@enpas.org>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Cc: Andreas Koensgen <ajk@comnets.uni-bremen.de>
Cc: Jeremy Kerr <jk@codeconstruct.com.au>
Cc: Matt Johnston <matt@codeconstruct.com.au>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230810091510.13006-17-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

8 files changed, 17 insertions, 20 deletions

diff --git a/drivers/net/can/can327.c b/drivers/net/can/can327.c
index 4bf970df7e84..a054f5fd0d43 100644
--- a/drivers/net/can/can327.c
+++ b/drivers/net/can/can327.c
@@ -885,7 +885,7 @@ static bool can327_is_valid_rx_char(u8 c)
  * This will not be re-entered while running, but other ldisc
  * functions may be called in parallel.
  */
-static void can327_ldisc_rx(struct tty_struct *tty, const unsigned char *cp,
+static void can327_ldisc_rx(struct tty_struct *tty, const u8 *cp,
 			    const char *fp, size_t count)
 {
 	struct can327 *elm = tty->disc_data;
diff --git a/drivers/net/can/slcan/slcan-core.c b/drivers/net/can/slcan/slcan-core.c
index 63371563d8e2..fe5671dbeb77 100644
--- a/drivers/net/can/slcan/slcan-core.c
+++ b/drivers/net/can/slcan/slcan-core.c
@@ -774,9 +774,8 @@ static const struct net_device_ops slcan_netdev_ops = {
  * be re-entered while running but other ldisc functions may be called
  * in parallel
  */
-static void slcan_receive_buf(struct tty_struct *tty,
-			      const unsigned char *cp, const char *fp,
-			      size_t count)
+static void slcan_receive_buf(struct tty_struct *tty, const u8 *cp,
+			      const char *fp, size_t count)
 {
 	struct slcan *sl = tty->disc_data;
 
diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 2089efb0d360..9a1f2a3f3b4f 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -427,8 +427,8 @@ out:
  * a block of 6pack data has been received, which can now be decapsulated
  * and sent on to some IP layer for further processing.
  */
-static void sixpack_receive_buf(struct tty_struct *tty,
-	const unsigned char *cp, const char *fp, size_t count)
+static void sixpack_receive_buf(struct tty_struct *tty, const u8 *cp,
+				const char *fp, size_t count)
 {
 	struct sixpack *sp;
 	int count1;
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index 1efab6037c7e..26dbcf49bfa6 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -874,7 +874,7 @@ static int mkiss_ioctl(struct tty_struct *tty, unsigned int cmd,
  * a block of data has been received, which can now be decapsulated
  * and sent on to the AX.25 layer for further processing.
  */
-static void mkiss_receive_buf(struct tty_struct *tty, const unsigned char *cp,
+static void mkiss_receive_buf(struct tty_struct *tty, const u8 *cp,
 			      const char *fp, size_t count)
 {
 	struct mkiss *ax = mkiss_get(tty);
diff --git a/drivers/net/mctp/mctp-serial.c b/drivers/net/mctp/mctp-serial.c
index 6761f4ff2e7c..5f809a18d308 100644
--- a/drivers/net/mctp/mctp-serial.c
+++ b/drivers/net/mctp/mctp-serial.c
@@ -390,8 +390,7 @@ static void mctp_serial_push(struct mctp_serial *dev, unsigned char c)
 	}
 }
 
-static void mctp_serial_tty_receive_buf(struct tty_struct *tty,
-					const unsigned char *c,
+static void mctp_serial_tty_receive_buf(struct tty_struct *tty, const u8 *c,
 					const char *f, size_t len)
 {
 	struct mctp_serial *dev = tty->disc_data;
diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c
index 79b8fca47edb..a661ccdea6ab 100644
--- a/drivers/net/ppp/ppp_async.c
+++ b/drivers/net/ppp/ppp_async.c
@@ -330,8 +330,8 @@ ppp_asynctty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)
 
 /* May sleep, don't call from interrupt level or with interrupts disabled */
 static void
-ppp_asynctty_receive(struct tty_struct *tty, const unsigned char *buf,
-		     const char *cflags, size_t count)
+ppp_asynctty_receive(struct tty_struct *tty, const u8 *buf, const char *cflags,
+		     size_t count)
 {
 	struct asyncppp *ap = ap_get(tty);
 	unsigned long flags;
@@ -819,8 +819,8 @@ process_input_packet(struct asyncppp *ap)
    other ldisc functions but will not be re-entered */
 
 static void
-ppp_async_input(struct asyncppp *ap, const unsigned char *buf,
-		const char *flags, int count)
+ppp_async_input(struct asyncppp *ap, const u8 *buf, const char *flags,
+		int count)
 {
 	struct sk_buff *skb;
 	int c, i, j, n, s, f;
diff --git a/drivers/net/ppp/ppp_synctty.c b/drivers/net/ppp/ppp_synctty.c
index 767aca32b315..2a5cf6be9591 100644
--- a/drivers/net/ppp/ppp_synctty.c
+++ b/drivers/net/ppp/ppp_synctty.c
@@ -93,8 +93,8 @@ static int ppp_sync_ioctl(struct ppp_channel *chan, unsigned int cmd,
 static void ppp_sync_process(struct tasklet_struct *t);
 static int ppp_sync_push(struct syncppp *ap);
 static void ppp_sync_flush_output(struct syncppp *ap);
-static void ppp_sync_input(struct syncppp *ap, const unsigned char *buf,
-			   const char *flags, int count);
+static void ppp_sync_input(struct syncppp *ap, const u8 *buf, const char *flags,
+			   int count);
 
 static const struct ppp_channel_ops sync_ops = {
 	.start_xmit = ppp_sync_send,
@@ -323,8 +323,8 @@ ppp_synctty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)
 
 /* May sleep, don't call from interrupt level or with interrupts disabled */
 static void
-ppp_sync_receive(struct tty_struct *tty, const unsigned char *buf,
-		 const char *cflags, size_t count)
+ppp_sync_receive(struct tty_struct *tty, const u8 *buf, const char *cflags,
+		 size_t count)
 {
 	struct syncppp *ap = sp_get(tty);
 	unsigned long flags;
@@ -655,8 +655,7 @@ ppp_sync_flush_output(struct syncppp *ap)
  * frame is considered to be in error and is tossed.
  */
 static void
-ppp_sync_input(struct syncppp *ap, const unsigned char *buf,
-		const char *flags, int count)
+ppp_sync_input(struct syncppp *ap, const u8 *buf, const char *flags, int count)
 {
 	struct sk_buff *skb;
 	unsigned char *p;
diff --git a/drivers/net/slip/slip.c b/drivers/net/slip/slip.c
index 39450bf748a5..7bfa90724e7b 100644
--- a/drivers/net/slip/slip.c
+++ b/drivers/net/slip/slip.c
@@ -685,7 +685,7 @@ static void sl_setup(struct net_device *dev)
  * in parallel
  */
 
-static void slip_receive_buf(struct tty_struct *tty, const unsigned char *cp,
+static void slip_receive_buf(struct tty_struct *tty, const u8 *cp,
 			     const char *fp, size_t count)
 {
 	struct slip *sl = tty->disc_data;