linux-kernel - Re: [PATCH 4/4] spi: s3c64xx: Fix large transfers with DMA

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Message-ID: <YzGusRaUtlFLT/d/@sirena.org.uk>
Date:   Mon, 26 Sep 2022 14:52:49 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Vincent Whitchurch <vincent.whitchurch@...s.com>
Cc:     krzysztof.kozlowski@...aro.org, andi@...zian.org, kernel@...s.com,
        alim.akhtar@...sung.com, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 4/4] spi: s3c64xx: Fix large transfers with DMA

On Mon, Sep 26, 2022 at 03:42:30PM +0200, Vincent Whitchurch wrote:
> On Mon, Sep 19, 2022 at 03:38:29PM +0100, Mark Brown wrote:

> > The driver should just set max_transfer_size and let the core
> > handle this.

> Hmm, AFAICS, the core doesn't actually do anything with
> max_transfer_size?  It's only used from spi-mem and a handful of other
> clients via spi_max_transfer_size().

Then we should fix the core to handle it properly.

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