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>

1 files changed, 10 insertions, 11 deletions

diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 56f5732ce47f..9db42e6ed45b 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -316,8 +316,8 @@ EXPORT_SYMBOL_GPL(tty_buffer_request_room);
  *
  * Returns: the number added.
  */
-int tty_insert_flip_string_fixed_flag(struct tty_port *port,
-		const unsigned char *chars, char flag, size_t size)
+int tty_insert_flip_string_fixed_flag(struct tty_port *port, const u8 *chars,
+		char flag, size_t size)
 {
 	int copied = 0;
 	bool flags = flag != TTY_NORMAL;
@@ -355,8 +355,8 @@ EXPORT_SYMBOL(tty_insert_flip_string_fixed_flag);
  *
  * Returns: the number added.
  */
-int tty_insert_flip_string_flags(struct tty_port *port,
-		const unsigned char *chars, const char *flags, size_t size)
+int tty_insert_flip_string_flags(struct tty_port *port, const u8 *chars,
+		const char *flags, size_t size)
 {
 	int copied = 0;
 
@@ -390,7 +390,7 @@ EXPORT_SYMBOL(tty_insert_flip_string_flags);
  * Queue a single byte @ch to the tty buffering, with an optional flag. This is
  * the slow path of tty_insert_flip_char().
  */
-int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag)
+int __tty_insert_flip_char(struct tty_port *port, u8 ch, char flag)
 {
 	struct tty_buffer *tb;
 	bool flags = flag != TTY_NORMAL;
@@ -421,8 +421,7 @@ EXPORT_SYMBOL(__tty_insert_flip_char);
  * Returns: the length available and buffer pointer (@chars) to the space which
  * is now allocated and accounted for as ready for normal characters.
  */
-int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars,
-		size_t size)
+int tty_prepare_flip_string(struct tty_port *port, u8 **chars, size_t size)
 {
 	int space = __tty_buffer_request_room(port, size, false);
 
@@ -450,8 +449,8 @@ EXPORT_SYMBOL_GPL(tty_prepare_flip_string);
  *
  * Returns: the number of bytes processed.
  */
-size_t tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
-			     const char *f, size_t count)
+size_t tty_ldisc_receive_buf(struct tty_ldisc *ld, const u8 *p, const char *f,
+			     size_t count)
 {
 	if (ld->ops->receive_buf2)
 		count = ld->ops->receive_buf2(ld->tty, p, f, count);
@@ -489,7 +488,7 @@ static void lookahead_bufs(struct tty_port *port, struct tty_buffer *head)
 		}
 
 		if (port->client_ops->lookahead_buf) {
-			unsigned char *p, *f = NULL;
+			u8 *p, *f = NULL;
 
 			p = char_buf_ptr(head, head->lookahead);
 			if (head->flags)
@@ -620,7 +619,7 @@ EXPORT_SYMBOL(tty_flip_buffer_push);
  * Returns: the number added.
  */
 int tty_insert_flip_string_and_push_buffer(struct tty_port *port,
-		const unsigned char *chars, size_t size)
+					   const u8 *chars, size_t size)
 {
 	struct tty_bufhead *buf = &port->buf;
 	unsigned long flags;