[PATCH 01/25] tty: Change return type to void
From: Jaejoong Kim <hidden>
Date: 2018-09-04 02:49:31
Also in:
linux-bluetooth, linux-mmc, linux-s390, linux-serial, linux-um, linux-usb, lkml, netdev, sparclinux
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
Many drivers with tty use the tty_stand_install(). But, there is no need to handle the error, since it always returns 0. So, change the return type of tty_standard_install() and tty_port_install() to void type and remove unnecessary exception handling where we use these functions. Signed-off-by: Jaejoong Kim <redacted> --- drivers/tty/tty_io.c | 10 ++++++---- drivers/tty/tty_port.c | 4 ++-- include/linux/tty.h | 4 ++-- 3 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 32bc3e3..b01cec8 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c@@ -1196,13 +1196,12 @@ void tty_init_termios(struct tty_struct *tty) } EXPORT_SYMBOL_GPL(tty_init_termios); -int tty_standard_install(struct tty_driver *driver, struct tty_struct *tty) +void tty_standard_install(struct tty_driver *driver, struct tty_struct *tty) { tty_init_termios(tty); tty_driver_kref_get(driver); tty->count++; driver->ttys[tty->index] = tty; - return 0; } EXPORT_SYMBOL_GPL(tty_standard_install);
@@ -1221,8 +1220,11 @@ EXPORT_SYMBOL_GPL(tty_standard_install); static int tty_driver_install_tty(struct tty_driver *driver, struct tty_struct *tty) { - return driver->ops->install ? driver->ops->install(driver, tty) : - tty_standard_install(driver, tty); + if (driver->ops->install) + return driver->ops->install(driver, tty); + + tty_standard_install(driver, tty); + return 0; } /**
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 25d7368..fd8d40d 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c@@ -656,11 +656,11 @@ EXPORT_SYMBOL(tty_port_close); * to a concrete tty specified by @tty. Use this or tty_port_register_device * (or both). Call tty_port_link_device as a last resort. */ -int tty_port_install(struct tty_port *port, struct tty_driver *driver, +void tty_port_install(struct tty_port *port, struct tty_driver *driver, struct tty_struct *tty) { tty->port = port; - return tty_standard_install(driver, tty); + tty_standard_install(driver, tty); } EXPORT_SYMBOL_GPL(tty_port_install);
diff --git a/include/linux/tty.h b/include/linux/tty.h
index c56e397..63cdac1 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h@@ -556,7 +556,7 @@ extern struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx); extern void tty_release_struct(struct tty_struct *tty, int idx); extern int tty_release(struct inode *inode, struct file *filp); extern void tty_init_termios(struct tty_struct *tty); -extern int tty_standard_install(struct tty_driver *driver, +extern void tty_standard_install(struct tty_driver *driver, struct tty_struct *tty); extern struct mutex tty_mutex;
@@ -688,7 +688,7 @@ extern int tty_port_close_start(struct tty_port *port, extern void tty_port_close_end(struct tty_port *port, struct tty_struct *tty); extern void tty_port_close(struct tty_port *port, struct tty_struct *tty, struct file *filp); -extern int tty_port_install(struct tty_port *port, struct tty_driver *driver, +extern void tty_port_install(struct tty_port *port, struct tty_driver *driver, struct tty_struct *tty); extern int tty_port_open(struct tty_port *port, struct tty_struct *tty, struct file *filp);
--
2.7.4