netdev - [PATCH v2 06/11] mctp: serial: propagage new tty types

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Message-ID: <20240808103549.429349-7-jirislaby@kernel.org>
Date: Thu,  8 Aug 2024 12:35:42 +0200
From: "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
To: gregkh@...uxfoundation.org
Cc: linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Jiri Slaby (SUSE)" <jirislaby@...nel.org>,
	Jeremy Kerr <jk@...econstruct.com.au>,
	Matt Johnston <matt@...econstruct.com.au>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Subject: [PATCH v2 06/11] mctp: serial: propagage new tty types

In tty, u8 is now used for data, ssize_t for sizes (with possible
negative error codes). Propagate these types (and use unsigned in
next_chunk_len()) to mctp.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
Reviewed-by: Jeremy Kerr <jk@...econstruct.com.au>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Jeremy Kerr <jk@...econstruct.com.au>
Cc: Matt Johnston <matt@...econstruct.com.au>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org
---
 drivers/net/mctp/mctp-serial.c | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/net/mctp/mctp-serial.c b/drivers/net/mctp/mctp-serial.c
index 5bf6fdff701c..78bd59b0930d 100644
--- a/drivers/net/mctp/mctp-serial.c
+++ b/drivers/net/mctp/mctp-serial.c
@@ -64,18 +64,18 @@ struct mctp_serial {
 	u16			txfcs, rxfcs, rxfcs_rcvd;
 	unsigned int		txlen, rxlen;
 	unsigned int		txpos, rxpos;
-	unsigned char		txbuf[BUFSIZE],
+	u8			txbuf[BUFSIZE],
 				rxbuf[BUFSIZE];
 };
 
-static bool needs_escape(unsigned char c)
+static bool needs_escape(u8 c)
 {
 	return c == BYTE_ESC || c == BYTE_FRAME;
 }
 
-static int next_chunk_len(struct mctp_serial *dev)
+static unsigned int next_chunk_len(struct mctp_serial *dev)
 {
-	int i;
+	unsigned int i;
 
 	/* either we have no bytes to send ... */
 	if (dev->txpos == dev->txlen)
@@ -99,7 +99,7 @@ static int next_chunk_len(struct mctp_serial *dev)
 	return i;
 }
 
-static int write_chunk(struct mctp_serial *dev, unsigned char *buf, int len)
+static ssize_t write_chunk(struct mctp_serial *dev, u8 *buf, size_t len)
 {
 	return dev->tty->ops->write(dev->tty, buf, len);
 }
@@ -108,9 +108,10 @@ static void mctp_serial_tx_work(struct work_struct *work)
 {
 	struct mctp_serial *dev = container_of(work, struct mctp_serial,
 					       tx_work);
-	unsigned char c, buf[3];
 	unsigned long flags;
-	int len, txlen;
+	ssize_t txlen;
+	unsigned int len;
+	u8 c, buf[3];
 
 	spin_lock_irqsave(&dev->lock, flags);
 
@@ -293,7 +294,7 @@ static void mctp_serial_rx(struct mctp_serial *dev)
 	dev->netdev->stats.rx_bytes += dev->rxlen;
 }
 
-static void mctp_serial_push_header(struct mctp_serial *dev, unsigned char c)
+static void mctp_serial_push_header(struct mctp_serial *dev, u8 c)
 {
 	switch (dev->rxpos) {
 	case 0:
@@ -323,7 +324,7 @@ static void mctp_serial_push_header(struct mctp_serial *dev, unsigned char c)
 	}
 }
 
-static void mctp_serial_push_trailer(struct mctp_serial *dev, unsigned char c)
+static void mctp_serial_push_trailer(struct mctp_serial *dev, u8 c)
 {
 	switch (dev->rxpos) {
 	case 0:
@@ -347,7 +348,7 @@ static void mctp_serial_push_trailer(struct mctp_serial *dev, unsigned char c)
 	}
 }
 
-static void mctp_serial_push(struct mctp_serial *dev, unsigned char c)
+static void mctp_serial_push(struct mctp_serial *dev, u8 c)
 {
 	switch (dev->rxstate) {
 	case STATE_IDLE:
@@ -394,7 +395,7 @@ static void mctp_serial_tty_receive_buf(struct tty_struct *tty, const u8 *c,
 					const u8 *f, size_t len)
 {
 	struct mctp_serial *dev = tty->disc_data;
-	int i;
+	size_t i;
 
 	if (!netif_running(dev->netdev))
 		return;
-- 
2.46.0