On 22. 4. 6. 17:21, Greg Kroah-Hartman wrote:
On Wed, Apr 06, 2022 at 05:22:16PM +0900, Jaewon Kim wrote:
The console_write and IRQ handler can run concurrently.
Problems may occurs console_write is continuously executed while the
IRQ handler is running.
Signed-off-by: Jaewon Kim <jaewon02.kim@xxxxxxxxxxx>
drivers/tty/serial/samsung_tty.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/tty/serial/samsung_tty.c
index e1585fbae909..9db479d728b5 100644
@@ -2480,12 +2480,24 @@ s3c24xx_serial_console_write(struct console *co, const char *s,
unsigned int count)
unsigned int ucon = rd_regl(cons_uart, S3C2410_UCON);
+ unsigned long flags;
+ bool locked = 1;
"1" is not a boolean :)
return value of spin_trylock() is 1 or 0.
It seems better to keep it as an int than to change it to bool.
I will return it to int.