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| author | Jiri Slaby <jslaby@suse.cz> | 2014-04-01 13:37:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-16 14:20:34 -0700 |
| commit | f4f653e9875e573860e783fecbebde284a8626f5 (patch) | |
| tree | f46732411e9c4c47ab33ae185c6f00a7d3349c1d | |
| parent | 3053075cea4e1d385cf0b003ffeb860cc8b378fb (diff) | |
| download | blackbird-op-linux-f4f653e9875e573860e783fecbebde284a8626f5.tar.gz blackbird-op-linux-f4f653e9875e573860e783fecbebde284a8626f5.zip | |
serial: 8250, disable "too much work" messages
The 8250 driver now reports many of these:
serial8250: too much work for irq4
These messages turned out to be common these days with a use of
virtualization. I tried to increase the limit of processed characters
in commit e7328ae1848966181a7ac47e8ae6cddbd2cf55f3 (serial: 8250,
increase PASS_LIMIT) in 2011. It was raised from 256 to 512, but it is
still not enough, apparently.
So disable the warning unless somebody turns on DEBUG (or
DYNAMIC_DEBUG _and_ the message).
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: Martin Pluskal <mpluskal@suse.com>
Reported-by: Takashi Iwai <tiwai@suse.com>
Tested-by: Takashi Iwai <tiwai@suse.de>
References: https://bugzilla.novell.com/show_bug.cgi?id=868394
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/8250/8250_core.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 81f909c2101f..139ab1997e06 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -1601,8 +1601,7 @@ static irqreturn_t serial8250_interrupt(int irq, void *dev_id) l = l->next; if (l == i->head && pass_counter++ > PASS_LIMIT) { - /* If we hit this, we're dead. */ - printk_ratelimited(KERN_ERR + pr_debug_ratelimited( "serial8250: too much work for irq%d\n", irq); break; } |
