linux-kernel - Re: [PATCH] spi: s3c64xx: Disable IRQ mode when using DMA

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Message-ID: <ffc244d4-74cc-ab82-1479-b8a6671ecbac@linaro.org>
Date:   Wed, 10 May 2023 14:08:05 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jaewon Kim <jaewon02.kim@...sung.com>,
        Andi Shyti <andi@...zian.org>, Mark Brown <broonie@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>
Cc:     linux-spi@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Chanho Park <chanho61.park@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH] spi: s3c64xx: Disable IRQ mode when using DMA

On 10/05/2023 13:39, Jaewon Kim wrote:
> Fixing the problem of enabling DMA mode and IRQ mode at the same time.
> In this case, a value of more than 6bits is written to RDY_LVL, it can
> cause an invasion of other registers, potentially leading to SPI
> transfer failure.
> 
> Fixes: 1ee806718d5e ("spi: s3c64xx: support interrupt based pio mode")
> Signed-off-by: Jaewon Kim <jaewon02.kim@...sung.com>
> Reported-by: Marek Szyprowski <m.szyprowski@...sung.com>
> Tested-by: Marek Szyprowski <m.szyprowski@...sung.com>
> ---


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof