linux-kernel - Re: [PATCH v2] dma-debug: enhance dma_debug_device

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Date:	Tue, 07 Jan 2014 08:00:33 -0700
From:	Shuah Khan <shuah.kh@...sung.com>
To:	Joerg Roedel <joro@...tes.org>
Cc:	akpm@...ux-foundation.org, alexander.h.duyck@...el.com,
	linux-kernel@...r.kernel.org, shuahkhan@...il.com,
	Shuah Khan <shuah.kh@...sung.com>
Subject: Re: [PATCH v2] dma-debug: enhance dma_debug_device_change() to check
 for mapping errors

On 01/07/2014 07:26 AM, Joerg Roedel wrote:
> On Fri, Jan 03, 2014 at 11:26:04AM -0700, Shuah Khan wrote:
>> On 12/30/2013 07:15 AM, Joerg Roedel wrote:
>>> I think it is better to check for this in a seperate function and use
>>> err_printk instead of dev_warn in the end to print the errors.
>>> The new function can then be called in the dma_debug_device_change
>>> callback like device_dma_allocations is.
>>>
>>
>> I did explore separate function option and backed off from it since
>> the new routine will have to duplicate what device_dma_allocations()
>> does except that it checks for entry->map_err_type.
>>
>> I still have the patch that does that saved away. If you still
>> prefer that approach, I can rework the patch and send it.
>
> You can get rid of the code duplication by defining for_each macros for
> the list traversals. So I would still prefer to have this check in a
> seperate function.
>
>
> 	Joerg
>
>

Joerg,

This patch and a follow-on cocinelli warning fix patch are in 
linux-next. Would you like me to send a patch relative to the change in 
linux-next or cut a new patch against the latest Linus's git. I can go 
either way. We just have to remember to drop those two patches from 
linux-next.

-- Shuah

-- 
Shuah Khan
Senior Linux Kernel Developer - Open Source Group
Samsung Research America(Silicon Valley)
shuah.kh@...sung.com | (970) 672-0658
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