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From:   Masahiro Yamada <yamada.masahiro@socionext.com>
Date:   Mon, 26 Aug 2019 10:56:14 +0900
Message-ID: <CAK7LNARrCviBr5j=2Lridh+MfbN1CFPU51cbpKDxNG6XKeQgdw@mail.gmail.com>
Subject: Re: [PATCH v2 2/2] dma-contiguous: Use fallback alloc_pages for
 single pages
To:     Nicolin Chen <nicoleotsuka@gmail.com>
Cc:     Christoph Hellwig <hch@lst.de>,
        Robin Murphy <robin.murphy@arm.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>, vdumpa@nvidia.com,
        Russell King <linux@armlinux.org.uk>,
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        Will Deacon <will.deacon@arm.com>,
        Chris Zankel <chris@zankel.net>,
        Max Filippov <jcmvbkbc@gmail.com>,
        Joerg Roedel <joro@8bytes.org>,
        David Woodhouse <dwmw2@infradead.org>,
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        Andrew Morton <akpm@linux-foundation.org>,
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        Thierry Reding <treding@nvidia.com>,
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        Wolfram Sang <wsa+renesas@sang-engineering.com>,
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Hi Nicolin,

On Sat, Aug 24, 2019 at 7:10 AM Nicolin Chen <nicoleotsuka@gmail.com> wrote:
>
> On Fri, Aug 23, 2019 at 09:49:46PM +0900, Masahiro Yamada wrote:

> >
> > Reverting this commit fixed the problem.
>
> We are having another problem with the new API and Christoph
> submitted a patch at: https://lkml.org/lkml/2019/8/20/86
>
> Would it be possible for you to test to see if it can fix?


It is included in 5.3-rc6

I tested 5.3-rc6 in on my board,
but I still see the same DMA fauilure.


Masahiro


> We can revert my fallback change after all, if Christoph's
> patch doesn't work for you either.
>
> Thanks
> Nicolin


-- 
Best Regards
Masahiro Yamada