From: Paul Fulghum <paulkf@microgate.com>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Tim_T_Murphy@Dell.com, Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [BUG][2.6.8.1] serial driver hangs SMP kernel, but not the UP kernel
Date: Fri, 29 Oct 2004 18:40:58 -0500 [thread overview]
Message-ID: <1099093258.5965.41.camel@at2.pipehead.org> (raw)
In-Reply-To: <20041029212029.I31627@flint.arm.linux.org.uk>
On Fri, 2004-10-29 at 15:20, Russell King wrote:
> At a guess, you've enabled "low latency" setting on this port ?
Would it make sense to do something like (in tty_io.c) the following?
void tty_flip_buffer_push(struct tty_struct *tty)
{
if (tty->low_latency) {
if (in_interrupt()) {
printk(KERN_ERR "tty_flip_buffer_push called with low latency from interrupt!\n");
dump_stack();
schedule_delayed_work(&tty->flip.work, 1);
}
else
flush_to_ldisc((void *) tty);
}
else
schedule_delayed_work(&tty->flip.work, 1);
}
--
Paul Fulghum
paulkf@microgate.com
next prev parent reply other threads:[~2004-10-29 23:58 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-29 19:55 [BUG][2.6.8.1] serial driver hangs SMP kernel, but not the UP kernel Tim_T_Murphy
2004-10-29 20:20 ` Russell King
2004-10-29 22:18 ` Paul Fulghum
2004-10-29 23:40 ` Paul Fulghum [this message]
2004-10-30 22:43 ` Alan Cox
2004-10-31 0:26 ` Paul Fulghum
2004-11-01 7:14 ` [BUG][2.6.8.1] serial driver hangs SMP kernel, but not the UPkernel Stuart MacDonald
2004-11-01 14:10 ` Paul Fulghum
2004-11-01 15:12 ` Stuart MacDonald
2004-11-01 23:02 ` Alan Cox
2004-11-02 0:18 ` Paul Fulghum
2004-10-29 21:08 ` [BUG][2.6.8.1] serial driver hangs SMP kernel, but not the UP kernel Paul Fulghum
-- strict thread matches above, loose matches on Subject: below --
2004-10-29 21:04 Tim_T_Murphy
2004-10-29 21:14 ` Russell King
2004-10-29 23:30 Tim_T_Murphy
2004-10-30 16:02 ` Russell King
2004-10-29 23:33 Tim_T_Murphy
2004-11-01 14:28 Tim_T_Murphy
2004-11-01 14:35 ` Russell King
2004-11-01 16:06 Tim_T_Murphy
2005-01-06 14:55 Tim_T_Murphy
2005-01-06 22:47 Tim_T_Murphy
2005-01-06 23:11 ` Alan Cox
2005-01-07 0:43 ` Paul Fulghum
2005-01-07 1:54 ` Alan Cox
2005-01-07 14:04 ` Paul Fulghum
2005-01-06 23:50 Tim_T_Murphy
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