Re: [PATCH] Fix typo in pmac_zilog
From: Benjamin Herrenschmidt (benh_at_kernel.crashing.org)
Date: 05/31/04
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To: "David S. Miller" <davem@redhat.com> Date: Mon, 31 May 2004 10:30:59 +1000
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> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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