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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Thomas Kuther <gimpel@sonnenkinder.org>,
	linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: IT821x: no DMA since 2.6.21
Date: Wed, 16 May 2007 13:40:21 +0100	[thread overview]
Message-ID: <20070516134021.0fefa16b@the-village.bc.nu> (raw)
In-Reply-To: <200705160258.15928.bzolnier@gmail.com>

> The real problem seems to be that IT821x "virtual" ID misses info
> about supported DMA modes (while it seems to contain enabled DMA
> mode info).

It does at least for the RAID volumes which are quite peculiar and seem
to have been defined by flipping bits until Windows worked 8)


> [ Patch is based on the above theory and Alan's work on pata_it821x.
>   Sorry for no real description (TODO) but it's almost 3:00 am ... ]

Thanks for doing that. I've got a potential patch for libata and the
smart mode problem. Turns out that Tejun's sanity checks in the bus reset
path are too smart for the firmware ;)

Alan

      parent reply	other threads:[~2007-05-16 12:35 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-15 10:53 Thomas Kuther
2007-05-15 11:26 ` Thomas Kuther
2007-05-15 11:31 ` Alan Cox
2007-05-15 11:35   ` Thomas Kuther
2007-05-15 11:48     ` Alan Cox
2007-05-15 12:20       ` Thomas Kuther
2007-05-16  0:58   ` Bartlomiej Zolnierkiewicz
2007-05-16  8:09     ` Thomas Kuther
2007-05-16  9:46       ` Bartlomiej Zolnierkiewicz
2007-05-18  9:47         ` Thomas Kuther
2007-05-24  9:46           ` Bartlomiej Zolnierkiewicz
2007-05-31 19:23             ` Thomas Kuther
2007-06-02 21:32               ` Bartlomiej Zolnierkiewicz
2007-05-16 12:40     ` Alan Cox [this message]

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