From: David Miller <davem@davemloft.net>
To: jarkao2@gmail.com
Cc: shemminger@vyatta.com, netdev@vger.kernel.org
Subject: Re: [PATCH 02/11] sky2: fix DMA sync_single length error
Date: Wed, 20 Jan 2010 15:41:26 -0800 (PST) [thread overview]
Message-ID: <20100120.154126.152942350.davem@davemloft.net> (raw)
In-Reply-To: <20100120.153451.62650459.davem@davemloft.net>
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.
next prev parent reply other threads:[~2010-01-20 23:41 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 [this message]
2010-01-20 23:59 ` Jarek Poplawski
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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