From: Jarek Poplawski <jarkao2@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: shemminger@vyatta.com, netdev@vger.kernel.org
Subject: Re: [PATCH 02/11] sky2: fix DMA sync_single length error
Date: Thu, 21 Jan 2010 00:59:20 +0100 [thread overview]
Message-ID: <20100120235920.GF3072@del.dom.local> (raw)
In-Reply-To: <20100120.154126.152942350.davem@davemloft.net>
On Wed, Jan 20, 2010 at 03:41:26PM -0800, David Miller wrote:
> From: David Miller <davem@davemloft.net>
> Date: Wed, 20 Jan 2010 15:34:51 -0800 (PST)
>
> > Whereas 1 patch in the 1 place in the DMA API implementation would fix
> > everything for everybody.
>
> For the record I just checked DMAR and Intel-IOMMU and they
> don't even implement the SYNC ops, they are NULL and thus
> can't be effected by the changes being discussed here.
>
> The generic DMA SYNC operations check for a NULL function
> pointer in the DMA operations, and do nothing if it is NULL.
>
> Thus, so far it is proven that only the DMA debugging code
> actually has this SYNC length requirement.
Thanks, I feel at least 75% safer ;-)
Good night!
Jarek P.
next prev parent reply other threads:[~2010-01-20 23:59 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-20 20:44 [PATCH 00/11] DMA sync errors Stephen Hemminger
2010-01-20 20:45 ` [PATCH 01/11] tg3: fix DMA sync_single length error Stephen Hemminger
2010-01-20 20:45 ` [PATCH 02/11] sky2: " Stephen Hemminger
2010-01-20 21:32 ` Jarek Poplawski
2010-01-20 22:52 ` David Miller
2010-01-20 23:21 ` Jarek Poplawski
2010-01-20 23:34 ` David Miller
2010-01-20 23:41 ` David Miller
2010-01-20 23:59 ` Jarek Poplawski [this message]
2010-01-21 0:04 ` Stephen Hemminger
2010-01-21 0:15 ` David Miller
2010-01-20 23:52 ` Jarek Poplawski
2010-01-20 23:56 ` David Miller
2010-01-20 20:45 ` [PATCH 03/11] skge: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 04/11] r8169: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 05/11] rrunner: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 06/11] de2104x: " Stephen Hemminger
2010-01-22 1:02 ` Grant Grundler
2010-01-22 1:12 ` Stephen Hemminger
2010-01-20 20:45 ` [PATCH 07/11] sungem: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 08/11] sunhme: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 09/11] cassini: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 10/11] cxgb3: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 11/11] ipoib: " Stephen Hemminger
2010-01-20 22:46 ` [PATCH 00/11] DMA sync errors David Miller
2010-01-20 23:28 ` Stephen Hemminger
2010-01-21 0:18 ` David Miller
2010-01-21 0:34 ` Stephen Hemminger
2010-01-21 0:36 ` David Miller
2010-01-21 12:44 ` Jarek Poplawski
2010-01-21 13:12 ` David Miller
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