From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "David S. Miller" <davem@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>,
Linux Kernel list <linux-kernel@vger.kernel.org>,
rmk+serial@arm.linux.org.uk
Subject: Re: [PATCH] Fix typo in pmac_zilog
Date: Mon, 31 May 2004 10:30:59 +1000 [thread overview]
Message-ID: <1085963459.2248.29.camel@gaston> (raw)
In-Reply-To: <20040530173252.4a040e99.davem@redhat.com>
On Mon, 2004-05-31 at 10:32, David S. Miller wrote:
> On Sun, 30 May 2004 17:13:38 +1000
> Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
>
> > There is a deadlock issue. I triggered once when I had a bug where the
> > driver was flooding the input with zero's. All serial drivers seem to be
> > affected. Apparently, tty_flip_* may call back into your write() routine
>
> Yes indeed, one code path is:
>
> .../...
Yup, another one is when echo is enabled, you may call back into write.
> It seems lots of serial drivers have this bug, even 8250.c :-)
Yes, I told Russell about it.
> I'll fix up the Sparc drivers meanwhile.
--
Benjamin Herrenschmidt <benh@kernel.crashing.org>
prev parent reply other threads:[~2004-05-31 0:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-28 3:40 Benjamin Herrenschmidt
2004-05-30 6:42 ` David S. Miller
2004-05-30 7:13 ` Benjamin Herrenschmidt
2004-05-31 0:32 ` David S. Miller
2004-05-31 0:30 ` Benjamin Herrenschmidt [this message]
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