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Re: [PATCH RFT RESEND linux-next] mips: dma-mapping: support debug_dma_m

Subject: Re: [PATCH RFT RESEND linux-next] mips: dma-mapping: support debug_dma_mapping_error
From: David Daney <>
Date: Fri, 26 Oct 2012 15:31:39 -0700
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On 10/26/2012 02:51 PM, Shuah Khan wrote:

On 10/26/2012 09:01 AM, Shuah Khan wrote:
Add support for debug_dma_mapping_error() call to avoid warning from
debug_dma_unmap() interface when it checks for mapping error checked
status. Without this patch, device driver failed to check map error
warning is generated.

I'm confused.

Your claim that a 'warning is generated' seems to be in conflict with...

Got it. Thanks. I would volunteer to look at fixing all the problems,
but unfortunately I don't have a MIPS box handy

This statement that you don't have hardware that exhibits the problem.

How was the patch tested?  How do you even know there is a problem?

David Daney

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