tty: make tty_ldisc_ops::*buf*() hooks operate on size_t

Count passed to tty_ldisc_ops::receive_buf*(), ::lookahead_buf(), and
returned from ::receive_buf2() is expected to be size_t. So set it to
size_t to unify with the rest of the code.

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: Marcel Holtmann <marcel@holtmann.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.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: Max Staudt <max@enpas.org>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
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: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230810091510.13006-16-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

9 files changed, 10 insertions, 10 deletions

diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index 688075859ae4..feda04dbe837 100644
--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -159,7 +159,7 @@ static inline void debugfs_tx(struct ser_device *ser, const u8 *data, int size)
 #endif
 
 static void ldisc_receive(struct tty_struct *tty, const u8 *data,
-			const char *flags, int count)
+			  const char *flags, size_t count)
 {
 	struct sk_buff *skb = NULL;
 	struct ser_device *ser;
diff --git a/drivers/net/can/can327.c b/drivers/net/can/can327.c
index 4533dc00f215..4bf970df7e84 100644
--- a/drivers/net/can/can327.c
+++ b/drivers/net/can/can327.c
@@ -886,7 +886,7 @@ static bool can327_is_valid_rx_char(u8 c)
  * functions may be called in parallel.
  */
 static void can327_ldisc_rx(struct tty_struct *tty, const unsigned char *cp,
-			    const char *fp, int count)
+			    const char *fp, size_t count)
 {
 	struct can327 *elm = tty->disc_data;
 	size_t first_new_char_idx;
@@ -904,7 +904,7 @@ static void can327_ldisc_rx(struct tty_struct *tty, const unsigned char *cp,
 	while (count--) {
 		if (elm->rxfill >= CAN327_SIZE_RXBUF) {
 			netdev_err(elm->dev,
-				   "Receive buffer overflowed. Bad chip or wiring? count = %i",
+				   "Receive buffer overflowed. Bad chip or wiring? count = %zu",
 				   count);
 			goto uart_failure;
 		}
diff --git a/drivers/net/can/slcan/slcan-core.c b/drivers/net/can/slcan/slcan-core.c
index 371af9d17b14..63371563d8e2 100644
--- a/drivers/net/can/slcan/slcan-core.c
+++ b/drivers/net/can/slcan/slcan-core.c
@@ -776,7 +776,7 @@ static const struct net_device_ops slcan_netdev_ops = {
  */
 static void slcan_receive_buf(struct tty_struct *tty,
 			      const unsigned char *cp, const char *fp,
-			      int count)
+			      size_t count)
 {
 	struct slcan *sl = tty->disc_data;
 
diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 9fb567524220..2089efb0d360 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -428,7 +428,7 @@ out:
  * 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, int count)
+	const unsigned char *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 c251e04ae047..1efab6037c7e 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -875,7 +875,7 @@ static int mkiss_ioctl(struct tty_struct *tty, unsigned int cmd,
  * and sent on to the AX.25 layer for further processing.
  */
 static void mkiss_receive_buf(struct tty_struct *tty, const unsigned char *cp,
-	const char *fp, int count)
+			      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 9f9eaf896047..6761f4ff2e7c 100644
--- a/drivers/net/mctp/mctp-serial.c
+++ b/drivers/net/mctp/mctp-serial.c
@@ -392,7 +392,7 @@ 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,
-					const char *f, int len)
+					const char *f, size_t len)
 {
 	struct mctp_serial *dev = tty->disc_data;
 	int i;
diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c
index f420bddb6a8c..79b8fca47edb 100644
--- a/drivers/net/ppp/ppp_async.c
+++ b/drivers/net/ppp/ppp_async.c
@@ -331,7 +331,7 @@ 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, int count)
+		     const char *cflags, size_t count)
 {
 	struct asyncppp *ap = ap_get(tty);
 	unsigned long flags;
diff --git a/drivers/net/ppp/ppp_synctty.c b/drivers/net/ppp/ppp_synctty.c
index 86dacef84c6c..767aca32b315 100644
--- a/drivers/net/ppp/ppp_synctty.c
+++ b/drivers/net/ppp/ppp_synctty.c
@@ -324,7 +324,7 @@ 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, int count)
+		 const char *cflags, size_t count)
 {
 	struct syncppp *ap = sp_get(tty);
 	unsigned long flags;
diff --git a/drivers/net/slip/slip.c b/drivers/net/slip/slip.c
index 6865d32270e5..39450bf748a5 100644
--- a/drivers/net/slip/slip.c
+++ b/drivers/net/slip/slip.c
@@ -686,7 +686,7 @@ static void sl_setup(struct net_device *dev)
  */
 
 static void slip_receive_buf(struct tty_struct *tty, const unsigned char *cp,
-		const char *fp, int count)
+			     const char *fp, size_t count)
 {
 	struct slip *sl = tty->disc_data;