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tty: serdev: drop serdev_controller_ops::write_room()

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In particular, serdev_device_write_room() is not called, so the whole
serdev's write_room() can go.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20250317070046.24386-17-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby (SUSE)
2025-03-20 08:00:51 -07:00
committed by Greg Kroah-Hartman
parent 52443558ad
commit 5af8903096
3 changed files with 0 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/tty/serdev/core.c
-11
View File
@@ -316,17 +316,6 @@ void serdev_device_write_flush(struct serdev_device *serdev)
}
EXPORT_SYMBOL_GPL(serdev_device_write_flush);
int serdev_device_write_room(struct serdev_device *serdev)
{
struct serdev_controller *ctrl = serdev->ctrl;
if (!ctrl || !ctrl->ops->write_room)
return 0;
return serdev->ctrl->ops->write_room(ctrl);
}
EXPORT_SYMBOL_GPL(serdev_device_write_room);
unsigned int serdev_device_set_baudrate(struct serdev_device *serdev, unsigned int speed)
{
struct serdev_controller *ctrl = serdev->ctrl;
drivers/tty/serdev/serdev-ttyport.c
-9
View File
@@ -92,14 +92,6 @@ static void ttyport_write_flush(struct serdev_controller *ctrl)
tty_driver_flush_buffer(tty);
}
static int ttyport_write_room(struct serdev_controller *ctrl)
{
struct serport *serport = serdev_controller_get_drvdata(ctrl);
struct tty_struct *tty = serport->tty;
return tty_write_room(tty);
}
static int ttyport_open(struct serdev_controller *ctrl)
{
struct serport *serport = serdev_controller_get_drvdata(ctrl);
@@ -259,7 +251,6 @@ static int ttyport_break_ctl(struct serdev_controller *ctrl, unsigned int break_
static const struct serdev_controller_ops ctrl_ops = {
.write_buf = ttyport_write_buf,
.write_flush = ttyport_write_flush,
.write_room = ttyport_write_room,
.open = ttyport_open,
.close = ttyport_close,
.set_flow_control = ttyport_set_flow_control,
include/linux/serdev.h
-6
View File
@@ -84,7 +84,6 @@ enum serdev_parity {
struct serdev_controller_ops {
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 *);
void (*close)(struct serdev_controller *);
void (*set_flow_control)(struct serdev_controller *, bool);
@@ -212,7 +211,6 @@ int serdev_device_break_ctl(struct serdev_device *serdev, int break_state);
void serdev_device_write_wakeup(struct serdev_device *);
ssize_t serdev_device_write(struct serdev_device *, const u8 *, size_t, long);
void serdev_device_write_flush(struct serdev_device *);
int serdev_device_write_room(struct serdev_device *);
/*
* serdev device driver functions
@@ -273,10 +271,6 @@ static inline ssize_t serdev_device_write(struct serdev_device *sdev,
return -ENODEV;
}
static inline void serdev_device_write_flush(struct serdev_device *sdev) {}
static inline int serdev_device_write_room(struct serdev_device *sdev)
{
return 0;
}
#define serdev_device_driver_register(x)
#define serdev_device_driver_unregister(x)