linux-kernel - Re: [PATCH 14/15] ARM: pxa: change SSP devices allocation

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Message-ID: <CAK8P3a2hYWO2eweg3zpR7iJoqtH4uxJLAxJAno7L96G7nA2HxQ@mail.gmail.com>
Date:   Tue, 3 Apr 2018 09:06:46 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:     Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Tejun Heo <tj@...nel.org>, Vinod Koul <vinod.koul@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>,
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Subject: Re: [PATCH 14/15] ARM: pxa: change SSP devices allocation

On Mon, Apr 2, 2018 at 4:26 PM, Robert Jarzmik <robert.jarzmik@...e.fr> wrote:

>
> +static struct pxa_ssp_info pxa_ssp_infos[] = {
> +       { .dma_chan_rx_name = "ssp1_rx", .dma_chan_tx_name = "ssp1_tx", },
> +       { .dma_chan_rx_name = "ssp1_rx", .dma_chan_tx_name = "ssp1_tx", },
> +       { .dma_chan_rx_name = "ssp2_rx", .dma_chan_tx_name = "ssp2_tx", },
> +       { .dma_chan_rx_name = "ssp2_rx", .dma_chan_tx_name = "ssp2_tx", },
> +       { .dma_chan_rx_name = "ssp3_rx", .dma_chan_tx_name = "ssp3_tx", },
> +       { .dma_chan_rx_name = "ssp3_rx", .dma_chan_tx_name = "ssp3_tx", },
> +       { .dma_chan_rx_name = "ssp4_rx", .dma_chan_tx_name = "ssp4_tx", },
> +       { .dma_chan_rx_name = "ssp4_rx", .dma_chan_tx_name = "ssp4_tx", },
> +};

This part looks odd to me, you're adding an extra level of indirection to
do two stages of lookups in some form of platform data.

Why can't you just always use "rx" and "tx" as the names here?

(also, I don't see why each line is duplicated, but I'm sure there's
an easy answer for that).

       Arnd