diff options
| author | Ingo Molnar <mingo@elte.hu> | 2011-12-14 12:05:54 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2015-02-13 22:20:50 (GMT) |
| commit | bdcc0b93fdd54de443e8c1aed4419e09988cb707 (patch) | |
| tree | 3b720023c34e7c23001d491333236725921e456d /drivers/tty | |
| parent | 3bcac65ea0d47796c3d04af0d58a2a9a4f979680 (diff) | |
| download | linux-fsl-qoriq-bdcc0b93fdd54de443e8c1aed4419e09988cb707.tar.xz | |
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>
Diffstat (limited to 'drivers/tty')
| -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 301ddc2..0ed004d 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -80,7 +80,16 @@ static unsigned int skip_txen_test; /* force skip of txen test at init time */ #define DEBUG_INTR(fmt...) do { } while (0) #endif -#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 #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) |