linux-kernel - Re: [PATCH v14 12/12] dmaengine: imx-sdma: add terminated list for freed descriptor in worker

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Message-ID: <YMhDdXnZlELhG16P@vkoul-mobl>
Date:   Tue, 15 Jun 2021 11:36:45 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Robin Gong <yibin.gong@....com>
Cc:     mark.rutland@....com, broonie@...nel.org, robh+dt@...nel.org,
        catalin.marinas@....com, will.deacon@....com, shawnguo@...nel.org,
        festevam@...il.com, s.hauer@...gutronix.de,
        martin.fuzzey@...wbird.group, u.kleine-koenig@...gutronix.de,
        dan.j.williams@...el.com, matthias.schiffer@...tq-group.com,
        frieder.schrempf@...tron.de, m.felsch@...gutronix.de,
        xiaoning.wang@....com, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kernel@...gutronix.de,
        dmaengine@...r.kernel.org, linux-imx@....com
Subject: Re: [PATCH v14 12/12] dmaengine: imx-sdma: add terminated list for
 freed descriptor in worker

On 07-04-21, 23:30, Robin Gong wrote:
> Add terminated list for keeping descriptor so that it could be freed in
> worker without any potential involving next descriptor raised up before
> this descriptor freed, because vchan_get_all_descriptors get all
> descriptors including the last terminated descriptor and the next
> descriptor, hence, the next descriptor maybe freed unexpectly when it's
> done in worker without this patch.
> https://www.spinics.net/lists/dmaengine/msg23367.html

Acked-By: Vinod Koul <vkoul@...nel.org>

-- 
~Vinod