diff options
| author | Ingo Molnar <mingo@elte.hu> | 2011-12-14 13:05:54 +0100 |
|---|---|---|
| committer | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2019-07-11 17:28:16 +0200 |
| commit | 6cce6476f0f55aaaadb95e5c754724758473fe9f (patch) | |
| tree | 592bdb7560718bfdf53cf354e61ab54cb4c9ba8d | |
| parent | 3f1be0187a3b9d1b64dff1b779351a2b74d4ff90 (diff) | |
| download | linux-rt-devel-6cce6476f0f55aaaadb95e5c754724758473fe9f.tar.gz | |
rt: Improve the serial console PASS_LIMIT
Beyond the warning:
drivers/tty/serial/8250/8250.c:1613:6: warning: unused variable ‘pass_counter’ [-Wunused-variable]
the solution of just looping infinitely was ugly - up it to 1 million to
give it a chance to continue in some really ugly situation.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | drivers/tty/serial/8250/8250_core.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 1daea9709ce2b7..047c32f1af428d 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -54,7 +54,16 @@ static struct uart_driver serial8250_reg; static unsigned int skip_txen_test; /* force skip of txen test at init time */ -#define PASS_LIMIT 512 +/* + * On -rt we can have a more delays, and legitimately + * so - so don't drop work spuriously and spam the + * syslog: + */ +#ifdef CONFIG_PREEMPT_RT_FULL +# define PASS_LIMIT 1000000 +#else +# define PASS_LIMIT 512 +#endif #include <asm/serial.h> /* |