Re: [PATCH v2 -resend#1 1/1] V4L: videobuf, don't use dma addr asphysical
From: Jiri Slaby
Date: Mon Feb 28 2011 - 10:48:08 EST
On 02/28/2011 03:53 PM, Konrad Rzeszutek Wilk wrote:
> On Mon, Feb 28, 2011 at 10:37:02AM +0100, Jiri Slaby wrote:
>> mem->dma_handle is a dma address obtained by dma_alloc_coherent which
>> needn't be a physical address in presence of IOMMU. So ensure we are
> Can you add a comment why you are fixing it? Is there a bug report for this?
> Under what conditions did you expose this fault?
No, by a just peer review when I was looking for something completely
> You also might want to mention that "needn't be a physical address as
> a hardware IOMMU can (and most likely) will return a bus address where
> physical != bus address."
Mauro, do you want me to resend this with such an udpate in the changelog?
> Otherwise you can stick 'Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>'
> on it.
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