From mboxrd@z Thu Jan  1 00:00:00 1970
From: will.deacon@arm.com (Will Deacon)
Date: Mon, 26 Nov 2018 19:31:43 +0000
Subject: [PATCH 06/10] swiotlb: use swiotlb_map_page in
 swiotlb_map_sg_attrs
In-Reply-To: <1c782a3d-cac4-954f-21e7-ef89147f0d56@arm.com>
References: <20181008080246.20543-7-hch@lst.de>
 <CANcMJZAzrxA9LGNvP-epv2DwsUacEM_hcgA1n5gmaPuWRJG4iw@mail.gmail.com>
 <20181109074955.GA27489@lst.de>
 <CALAqxLVSDkv4faF3ta_ue9AA9s8B=-8cAMxC_sow+wZYtrfxeQ@mail.gmail.com>
 <20181114141311.GA26677@lst.de> <20181114161239.GA29462@lst.de>
 <CALAqxLVMW2sYkaQvggZ-LhvkzpuF2rssQJ4thZkkAkROk=wVVw@mail.gmail.com>
 <20181120092516.GC7270@lst.de> <20181123182715.GA21183@arm.com>
 <1c782a3d-cac4-954f-21e7-ef89147f0d56@arm.com>
Message-ID: <20181126193142.GA534@arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Hi Robin,

On Fri, Nov 23, 2018 at 07:34:15PM +0000, Robin Murphy wrote:
> On 2018-11-23 6:27 pm, Will Deacon wrote:
> >On Tue, Nov 20, 2018 at 10:25:16AM +0100, Christoph Hellwig wrote:
> >>On Mon, Nov 19, 2018 at 03:22:13PM -0800, John Stultz wrote:
> >>>>+               sg->dma_address = dma_addr;
> >>>>                 sg_dma_len(sg) = sg->length;
> >>>>         }
> >>>
> >>>I know Robin has already replied with more detailed info, but just to
> >>>close the loop as I'm finally home, applying this patch didn't seem to
> >>>help with the IO hangs I'm seeing w/ HiKey960.
> >>
> >>If Robins observation is right this should fix the problem for you:
> >
> >Please could you give this diff a try and let us know whether the problem
> >persists with your board?
> 
> This is actually the exact same change that I ended up with in my fixes[1],
> which John has indeed confirmed.
> 
> (sorry, it's the thing I was telling you about the other day, but I
> neglected to include you on cc you when I sent the patches out the following
> morning)

Thanks, I missed that series. I'll forget all about this problem then!

Will