Re: [PATCH 4/8] spi: sh-msiof: Fix DMA completion

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

Hi Dirk,

On Wed, Sep 6, 2017 at 9:05 AM, Dirk Behme <dirk.behme@xxxxxxxxxxxx> wrote:
> From: Ryo Kataoka <ryo.kataoka.wt@xxxxxxxxxxx>
>
> When reception DMA completes before transmission DMA, next transmission
> DMA may not be able to start. This patch adds wait_for_completion_timeout()
> to both of reception DMA and transmission DMA.
>
> If the driver waits only for the Rx DMA completion, the Tx DMA completion
> thread of DMA Engine may be still processing.
>
> Signed-off-by: Ryo Kataoka <ryo.kataoka.wt@xxxxxxxxxxx>
> [reword commit message]
> Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@xxxxxxxxxxx>
> [adjust context]
> Signed-off-by: Dirk Behme <dirk.behme@xxxxxxxxxxxx>

Is this still needed after "[PATCH 5/8] spi: sh-msiof: Wait for Tx
FIFO empty after DMA"?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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                                -- Linus Torvalds
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