linux-kernel - Re: [PATCH v2] spi: rspi: use correct enum for DMA transfer direction

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Message-ID: <CAMuHMdUnLP4DU2-o6PBOJDZf9dBMGx6TTYN3rEdA5UxznZGxOw@mail.gmail.com>
Date:   Wed, 21 Mar 2018 09:06:50 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Stefan Agner <stefan@...er.ch>
Cc:     Mark Brown <broonie@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-spi <linux-spi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] spi: rspi: use correct enum for DMA transfer direction

Hi Stefan,

On Mon, Mar 19, 2018 at 11:16 PM, Stefan Agner <stefan@...er.ch> wrote:
> Use enum dma_transfer_direction as required by dmaengine_prep_slave_sg
> instead of enum dma_data_direction. This won't change behavior in
> practice as the enum values are equivalent.

Thanks for catching!

BTW, spi-sh-msiof has the same issue. Will sent a fix.

> This fixes two warnings when building with clang:
>   drivers/spi/spi-rspi.c:538:26: warning: implicit conversion from enumeration
>       type 'enum dma_data_direction' to different enumeration type
>       'enum dma_transfer_direction' [-Wenum-conversion]
>                                         rx->sgl, rx->nents, DMA_FROM_DEVICE,
>                                                             ^~~~~~~~~~~~~~~
>   drivers/spi/spi-rspi.c:558:26: warning: implicit conversion from enumeration
>       type 'enum dma_data_direction' to different enumeration type
>       'enum dma_transfer_direction' [-Wenum-conversion]
>                                         tx->sgl, tx->nents, DMA_TO_DEVICE,
>                                                             ^~~~~~~~~~~~~
>
> Signed-off-by: Stefan Agner <stefan@...er.ch>

JFTR, as it's already applied
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds