tty: serdev: convert to u8 and size_t in serdev_controller_ops

Switch character types to u8 and sizes to size_t. To conform to
characters/sizes in the rest of the tty layer.

In this patch, only struct serdev_controller_ops hooks. The rest will
follow.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231206073712.17776-23-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c
index c5381fe15e1c4fddba7cd502d6668288c6661697..e94e090cf0a1a5aa31575b21de671c1fe8fb71f5 100644 (file)
--- a/drivers/tty/serdev/serdev-ttyport.c
+++ b/drivers/tty/serdev/serdev-ttyport.c
@@ -74,7 +74,7 @@ static const struct tty_port_client_operations client_ops = {
  * Callback functions from the serdev core.
  */
 
-static int ttyport_write_buf(struct serdev_controller *ctrl, const unsigned char *data, size_t len)
+static ssize_t ttyport_write_buf(struct serdev_controller *ctrl, const u8 *data, size_t len)
 {
        struct serport *serport = serdev_controller_get_drvdata(ctrl);
        struct tty_struct *tty = serport->tty;

diff --git a/include/linux/serdev.h b/include/linux/serdev.h
index 0ebf53bb254fa02c02ed1a4c97b89384d6fcf337..8cdab2c3b6d58affb0cbdde896a7656cc3f30f7c 100644 (file)
--- a/include/linux/serdev.h
+++ b/include/linux/serdev.h
@@ -82,7 +82,7 @@ enum serdev_parity {
  * serdev controller structures
  */
 struct serdev_controller_ops {
-       int (*write_buf)(struct serdev_controller *, const unsigned char *, size_t);
+       ssize_t (*write_buf)(struct serdev_controller *, const u8 *, size_t);
        void (*write_flush)(struct serdev_controller *);
        int (*write_room)(struct serdev_controller *);
        int (*open)(struct serdev_controller *);
@@ -185,9 +185,9 @@ static inline void serdev_controller_write_wakeup(struct serdev_controller *ctrl
        serdev->ops->write_wakeup(serdev);
 }
 
-static inline int serdev_controller_receive_buf(struct serdev_controller *ctrl,
-                                             const unsigned char *data,
-                                             size_t count)
+static inline ssize_t serdev_controller_receive_buf(struct serdev_controller *ctrl,
+                                                   const u8 *data,
+                                                   size_t count)
 {
        struct serdev_device *serdev = ctrl->serdev;