From: Jeff Garzik <jeff@garzik.org>
To: Tejun Heo <htejun@gmail.com>
Cc: IDE/ATA development list <linux-ide@vger.kernel.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH #upstream-fixes] pata_ali: disable ATAPI DMA
Date: Fri, 04 Apr 2008 02:47:34 -0400 [thread overview]
Message-ID: <47F5CF06.9020208@garzik.org> (raw)
In-Reply-To: <47F46DE7.6090809@gmail.com>
Tejun Heo wrote:
> ATAPI DMA just doesn't work reliably on pata_ali. The IDE driver can
> do it but for some mysterious reason, pata_ali can't. This patch
> disables it by default and makes the driver whine during
> initialization. "pata_ali.atapi_dma" parameter is added so that user
> can bypass the workaround.
>
> Signed-off-by: Tejun Heo <htejun@gmail.com>
> ---
> I just had another run with pata_ali. I tried various things w/o any
> success. I just can't see what's the difference between alim15x3 and
> pata_ali. I again tried to make the command issue path of pata_ali +
> libata behave virtually identical to alim15x3 but it just didn't work.
> :-( :-( :-(
>
> drivers/ata/pata_ali.c | 40 ++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 40 insertions(+)
applied
prev parent reply other threads:[~2008-04-04 6:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-03 5:40 [PATCH #upstream-fixes] pata_ali: disable ATAPI DMA Tejun Heo
2008-04-04 6:47 ` Jeff Garzik [this message]
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