diff options
| author | Jiri Slaby <jirislaby@gmail.com> | 2011-06-05 22:51:49 +0200 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2014-02-10 16:11:14 -0500 |
| commit | 197a5a154c73e0a8cdd5af21c25d0064db32af52 (patch) | |
| tree | 5e054a081274ededf3830871b45c4cb6f8cf547f | |
| parent | b27a97e2d64df2dcb74c00ae0068b0dd93f03555 (diff) | |
serial: 8250, increase PASS_LIMIT
commit e7328ae1848966181a7ac47e8ae6cddbd2cf55f3 upstream.
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>
[PG: drivers/tty/serial/8250.c ---> drivers/serial/8250.c in 2.6.34]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| -rw-r--r-- | drivers/serial/8250.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index c1d79a23347..848894773c6 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -82,7 +82,7 @@ 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) |