tty: use u8 for flags

This makes all those '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().

Note that we do not change signedness as we compile with
-funsigned-char.

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/20230810091510.13006-18-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 6 insertions, 7 deletions

diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c
index a661ccdea6ab..cfd5cb609d99 100644
--- a/drivers/net/ppp/ppp_async.c
+++ b/drivers/net/ppp/ppp_async.c
@@ -98,7 +98,7 @@ static int ppp_async_send(struct ppp_channel *chan, struct sk_buff *skb);
 static int ppp_async_push(struct asyncppp *ap);
 static void ppp_async_flush_output(struct asyncppp *ap);
 static void ppp_async_input(struct asyncppp *ap, const unsigned char *buf,
-			    const char *flags, int count);
+			    const u8 *flags, int count);
 static int ppp_async_ioctl(struct ppp_channel *chan, unsigned int cmd,
 			   unsigned long arg);
 static void ppp_async_process(struct tasklet_struct *t);
@@ -330,7 +330,7 @@ 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 u8 *buf, const char *cflags,
+ppp_asynctty_receive(struct tty_struct *tty, const u8 *buf, const u8 *cflags,
 		     size_t count)
 {
 	struct asyncppp *ap = ap_get(tty);
@@ -819,8 +819,7 @@ process_input_packet(struct asyncppp *ap)
    other ldisc functions but will not be re-entered */
 
 static void
-ppp_async_input(struct asyncppp *ap, const u8 *buf, const char *flags,
-		int count)
+ppp_async_input(struct asyncppp *ap, const u8 *buf, const u8 *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 2a5cf6be9591..164c9053f73b 100644
--- a/drivers/net/ppp/ppp_synctty.c
+++ b/drivers/net/ppp/ppp_synctty.c
@@ -93,7 +93,7 @@ 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 u8 *buf, const char *flags,
+static void ppp_sync_input(struct syncppp *ap, const u8 *buf, const u8 *flags,
 			   int count);
 
 static const struct ppp_channel_ops sync_ops = {
@@ -323,7 +323,7 @@ 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 u8 *buf, const char *cflags,
+ppp_sync_receive(struct tty_struct *tty, const u8 *buf, const u8 *cflags,
 		 size_t count)
 {
 	struct syncppp *ap = sp_get(tty);
@@ -655,7 +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 u8 *buf, const char *flags, int count)
+ppp_sync_input(struct syncppp *ap, const u8 *buf, const u8 *flags, int count)
 {
 	struct sk_buff *skb;
 	unsigned char *p;