Re: [PATCH v2 0/2] bnx2: Wait for in-flight DMA to complete at probe stage

[David Miller]

From: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
Date: Mon, 14 Nov 2016 09:25:47 +0100

> Dear Baoquan,
> 
> On 11/13/16 06:01, Baoquan He wrote:
>> This is v2 post.
>>
>> In commit 3e1be7a ("bnx2: Reset device during driver initialization"),
>> firmware requesting code was moved from open stage to probe stage.
>> The reason is in kdump kernel hardware iommu need device be reset in
>> driver probe stage, otherwise those in-flight DMA from 1st kernel
>> will continue going and look up into the newly created io-page tables.
>> However bnx2 chip resetting involves firmware requesting issue, that
>> need be done in open stage.
>>
>> Michale Chan suggested we can just wait for the old in-flight DMA to
>> complete at probe stage, then though without device resetting, we
>> don't need to worry the old in-flight DMA could continue looking up
>> the newly created io-page tables.
>>
>> v1->v2:
>>     Michael suggested to wait for the in-flight DMA to complete at probe
>>     stage. So give up the old method of trying to reset chip at probe
>>     stage, take the new way accordingly.
> 
> thank you for posting the updated series. Could you please resend a v3
> with stable@xxxxxxxxxxxxxxx added [1]?

This is not the proper procedure for networking patches.