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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jan Engelhardt <jengelh@medozas.de>
Cc: "Martin MOKREJŠ" <mmokrejs@ribosome.natur.cuni.cz>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.23.17 & 2.6.24.5 and maybe earlier: pata_marvell: need to disable DMA to get rid of '(ATA bus error)', 'ata7.00: status: { DRDY ERR }', 'ata7.00: error: { ICRC ABRT }'
Date: Fri, 2 May 2008 10:57:49 +0100	[thread overview]
Message-ID: <20080502105749.24b9229f@core> (raw)
In-Reply-To: <alpine.LNX.1.10.0805020150460.6463@fbirervta.pbzchgretzou.qr>

> >libata.dma=3 will stop DMA being used for CF devices (except those that
> >decide to pretend to be ATA classes). This one comes up a lot as many CF
> >adapters are simply not adequate for UDMA.
> 
> Perhaps the kernel could do this automatically once it sees the
> status code?

We then hurt all the people with perfectly good working UDMA CF devices.
The kernel will eventually fall back from UDMA to PIO but it favours
working hardware by default.

  reply	other threads:[~2008-05-02 10:06 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-01 17:28 2.6.23.17 & 2.6.24.5 and maybe earlier: pata_marvell: need to disable DMA to get rid of '(ATA bus error)', 'ata7.00: status: { DRDY ERR }', 'ata7.00: error: { ICRC ABRT }' Martin MOKREJŠ
2008-05-01 19:08 ` Alan Cox
2008-05-01 21:24   ` Martin MOKREJŠ
2008-05-01 23:51   ` Jan Engelhardt
2008-05-02  9:57     ` Alan Cox [this message]
     [not found] <fa.+9Q+WQnyiYTlpbXVIzn6aT2/gS0@ifi.uio.no>
     [not found] ` <fa.fKUfeQYS9BFD60fOMormQ25ard4@ifi.uio.no>
     [not found]   ` <fa.QYXSW2xjSxf6xnmd0rQGJhHLnrc@ifi.uio.no>
     [not found]     ` <fa.qfeYSQtlsXzGvFvBQEdF9TFFpNg@ifi.uio.no>
2008-05-03  2:42       ` Robert Hancock
2008-05-06 12:44         ` Martin MOKREJŠ
2008-05-06 13:08           ` Alan Cox
2008-05-06 14:54             ` Martin MOKREJŠ
2008-05-06 15:04               ` Alan Cox
2008-05-06 16:24                 ` Martin MOKREJŠ
2008-05-06 19:04                   ` Alan Cox
2008-05-06 23:42                     ` Martin MOKREJŠ
2008-05-07  7:25                       ` Alan Cox

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