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tty/serial: make port of serial8250_register_8250_port const

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After the previous patch, we can make port passed to
serial8250_find_match_or_unused const. And then we can make const also
port of serial8250_register_8250_port.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210519072153.3859-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2021-05-19 09:21:51 +02:00 committed by Greg Kroah-Hartman
parent b8be5db573
commit cd256b068f
2 changed files with 3 additions and 3 deletions
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4
drivers/tty/serial/8250/8250_core.c
View File

@ -906,7 +906,7 @@ static struct platform_device *serial8250_isa_devs;
*/ */
static DEFINE_MUTEX(serial_mutex); static DEFINE_MUTEX(serial_mutex);
static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port *port) static struct uart_8250_port *serial8250_find_match_or_unused(const struct uart_port *port)
{ {
int i; int i;
@ -971,7 +971,7 @@ static void serial_8250_overrun_backoff_work(struct work_struct *work)
* *
* On success the port is ready to use and the line number is returned. * On success the port is ready to use and the line number is returned.
*/ */
int serial8250_register_8250_port(struct uart_8250_port *up) int serial8250_register_8250_port(const struct uart_8250_port *up)
{ {
struct uart_8250_port *uart; struct uart_8250_port *uart;
int ret = -ENOSPC; int ret = -ENOSPC;

2
include/linux/serial_8250.h
View File

@ -146,7 +146,7 @@ static inline struct uart_8250_port *up_to_u8250p(struct uart_port *up)
return container_of(up, struct uart_8250_port, port); return container_of(up, struct uart_8250_port, port);
} }
int serial8250_register_8250_port(struct uart_8250_port *); int serial8250_register_8250_port(const struct uart_8250_port *);
void serial8250_unregister_port(int line); void serial8250_unregister_port(int line);
void serial8250_suspend_port(int line); void serial8250_suspend_port(int line);
void serial8250_resume_port(int line); void serial8250_resume_port(int line);