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| author | Jiri Slaby <jirislaby@gmail.com> | 2011-06-05 22:51:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-06-07 09:44:36 -0700 |
| commit | e7328ae1848966181a7ac47e8ae6cddbd2cf55f3 (patch) | |
| tree | 8261430b83cce0fea0ae0a8ca8c626d66bd4be7e /drivers/tty | |
| parent | 2807190b69f60ce4a04a9c7c523c9bce8cb62b2e (diff) | |
| download | linux-e7328ae1848966181a7ac47e8ae6cddbd2cf55f3.tar.gz linux-e7328ae1848966181a7ac47e8ae6cddbd2cf55f3.tar.bz2 linux-e7328ae1848966181a7ac47e8ae6cddbd2cf55f3.zip | |
serial: 8250, increase PASS_LIMIT
With virtual machines like qemu, it's pretty common to see "too much
work for irq4" messages nowadays. This happens when a bunch of output
is printed on the emulated serial console. This is caused by too low
PASS_LIMIT. When ISR loops more than the limit, it spits the message.
I've been using a kernel with doubled the limit and I couldn't see no
problems. Maybe it's time to get rid of the message now?
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c index b40f7b90c81d..f11df87fa249 100644 --- a/drivers/tty/serial/8250.c +++ b/drivers/tty/serial/8250.c @@ -81,7 +81,7 @@ 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 256 +#define PASS_LIMIT 512 #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) |