[PATCH 10/10] tty: Return bool from tty_termios_hw_change()

From: Ilpo Järvinen
Date: Wed Jan 04 2023 - 10:17:06 EST


Change tty_termios_hw_change() return to bool and convert it to
a or-chained return statement.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
drivers/tty/tty_ioctl.c | 10 ++++------
include/linux/tty.h | 2 +-
2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index ce511557b98b..4a80fabf6d5e 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -270,13 +270,11 @@ EXPORT_SYMBOL(tty_termios_copy_hw);
* between the two termios structures, or a speed change is needed.
*/

-int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b)
+bool tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b)
{
- if (a->c_ispeed != b->c_ispeed || a->c_ospeed != b->c_ospeed)
- return 1;
- if ((a->c_cflag ^ b->c_cflag) & ~(HUPCL | CREAD | CLOCAL))
- return 1;
- return 0;
+ return a->c_ispeed != b->c_ispeed ||
+ a->c_ospeed != b->c_ospeed ||
+ (a->c_cflag ^ b->c_cflag) & ~(HUPCL | CREAD | CLOCAL);
}
EXPORT_SYMBOL(tty_termios_hw_change);

diff --git a/include/linux/tty.h b/include/linux/tty.h
index 730c3301d710..093935e97f42 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -453,7 +453,7 @@ unsigned char tty_get_char_size(unsigned int cflag);
unsigned char tty_get_frame_size(unsigned int cflag);

void tty_termios_copy_hw(struct ktermios *new, const struct ktermios *old);
-int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
+bool tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);

void tty_wakeup(struct tty_struct *tty);
--
2.30.2