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Date:   Tue, 3 Oct 2023 17:34:32 +0200
From:   =?UTF-8?B?S8O2cnk=?= Maincent <kory.maincent@bootlin.com>
To:     Serge Semin <fancer.lancer@gmail.com>
Cc:     Cai Huoqing <cai.huoqing@linux.dev>,
        Manivannan Sadhasivam <mani@kernel.org>,
        Vinod Koul <vkoul@kernel.org>,
        Gustavo Pimentel <Gustavo.Pimentel@synopsys.com>,
        dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        Herve Codina <herve.codina@bootlin.com>
Subject: Re: [PATCH v2 4/5] dmaengine: dw-edma: HDMA: Add sync read before
 starting the DMA transfer in remote setup
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        <20231003121542.3139696-1-kory.maincent@bootlin.com>
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On Tue, 3 Oct 2023 18:20:23 +0300
Serge Semin <fancer.lancer@gmail.com> wrote:

> On Tue, Oct 03, 2023 at 02:15:42PM +0200, K=C3=B6ry Maincent wrote:
> > From: Kory Maincent <kory.maincent@bootlin.com>
> >=20
> > The Linked list element and pointer are not stored in the same memory as
> > the HDMA controller register. If the doorbell register is toggled before
> > the full write of the linked list a race condition error can appears.
> > In remote setup we can only use a readl to the memory to assured the fu=
ll
> > write has occurred.
> >=20
> > Fixes: e74c39573d35 ("dmaengine: dw-edma: Add support for native HDMA")
> > Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
> > ---
> >=20
> > Changes in v2:
> > - Move the sync read in a function.
> > - Add commments =20
>=20
> Note you need to resubmit the entire series if any of its part has
> changed. So please add these patches to your patchset (in place of the
> 4/5 and 5/5 patches I commented) and resend it as v3.

Alright.
Should I wait for Cai's response for patch 1/5 before sending v3. He seems =
to
never having woken up in our discussions.