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

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Message-ID: <20161113045429.GG15325@x1>
Date:   Sun, 13 Nov 2016 12:54:29 +0800
From:   Baoquan He <bhe@...hat.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, michael.chan@...adcom.com,
        linux-kernel@...r.kernel.org, Dept-GELinuxNICDev@...ium.com,
        rasesh.mody@...ium.com, harish.patil@...ium.com,
        frank@...ermydesk.org, jsr@....edzone.net, pmenzel@...gen.mpg.de,
        jroedel@...e.de, dyoung@...hat.com
Subject: Re: [PATCH v2 2/2] bnx2: Wait for in-flight DMA to complete at probe
 stage

On 11/12/16 at 11:40pm, David Miller wrote:
> From: Baoquan He <bhe@...hat.com>
> Date: Sun, 13 Nov 2016 12:15:24 +0800
> 
> > In-flight DMA from 1st kernel could continue going in kdump kernel.
> > New io-page table has been created before bnx2 does reset at open stage.
> > We have to wait for the in-flight DMA to complete to avoid it look up
> > into the newly created io-page table at probe stage.
> > 
> > Suggested-by: Michael Chan <michael.chan@...adcom.com>
> > Signed-off-by: Baoquan He <bhe@...hat.com>
> > ---
> > 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.
> 
> Patch updates don't work this way.
> 
> When you update a patch that is part of a patch series, you must
> resubmit the entire series anew.

Thanks for telling, David!

Learned it. I am not very sure if this is what Michael is suggesting.
Will resubmit the entire patch series.

Thanks
Baoquan