linux-kernel - Re: [PATCH] dmaengine: dw-axi-dmac: Fix RMW on channel suspend register

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Date:   Fri, 1 Jul 2022 17:18:34 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Emil Renner Berthing <emil.renner.berthing@...onical.com>
Cc:     Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
        dmaengine@...r.kernel.org, Emil Renner Berthing <kernel@...il.dk>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Pandith N <pandith.n@...el.com>,
        Michael Zhu <michael.zhu@...rfivetech.com>,
        linux-kernel@...r.kernel.org,
        Samin Guo <samin.guo@...rfivetech.com>
Subject: Re: [PATCH] dmaengine: dw-axi-dmac: Fix RMW on channel suspend
 register

On 27-06-22, 11:09, Emil Renner Berthing wrote:
> From: Emil Renner Berthing <kernel@...il.dk>
> 
> When the DMA is configured for more than 8 channels the bits controlling
> suspend moves to another register. However when adding support for this
> the new register would be completely overwritten in one case and
> overwritten with values from the old register in another case.
> 
> Found by comparing the parallel implementation of more than 8 channel
> support for the StarFive JH7100 SoC by Samin.

Applied, thanks

-- 
~Vinod