linux-kernel - Re: [PATCH v10 01/17] spi: spi-mem: allow specifying whether an op is DTR or not

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Date:   Mon, 13 Jul 2020 03:55:02 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <p.yadav@...com>, <miquel.raynal@...tlin.com>, <richard@....at>,
        <vigneshr@...com>, <broonie@...nel.org>,
        <Nicolas.Ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <Ludovic.Desroches@...rochip.com>, <matthias.bgg@...il.com>,
        <michal.simek@...inx.com>, <linux-mtd@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-spi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
CC:     <nsekhar@...com>, <boris.brezillon@...labora.com>
Subject: Re: [PATCH v10 01/17] spi: spi-mem: allow specifying whether an op is
 DTR or not

On 6/23/20 9:30 PM, Pratyush Yadav wrote:
> diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
> index 9a86cc27fcc0..93e255287ab9 100644
> --- a/drivers/spi/spi-mem.c
> +++ b/drivers/spi/spi-mem.c
> @@ -156,6 +156,9 @@ bool spi_mem_default_supports_op(struct spi_mem *mem,
>                                    op->data.dir == SPI_MEM_DATA_OUT))
>                 return false;
> 
> +       if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)
> +               return false;


I would put this check the first thing in the function to exit sooner
and avoid the rest of the checks, that would become superfluous.

Anyway this is just a nit.