linux-kernel - Re: [PATCH resend 1/2] spi: add driver for ar934x spi controller

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Message-ID: <20200206113158.GK3897@sirena.org.uk>
Date:   Thu, 6 Feb 2020 11:31:58 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Chuanhong Guo <gch981213@...il.com>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Subject: Re: [PATCH resend 1/2] spi: add driver for ar934x spi controller

On Thu, Feb 06, 2020 at 04:44:42PM +0800, Chuanhong Guo wrote:

This looks good, just a couple of comments below:

> --- /dev/null
> +++ b/drivers/spi/spi-ar934x.c
> @@ -0,0 +1,230 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * SPI controller driver for Qualcomm Atheros AR934x/QCA95xx SoCs

Please make the entire comment block a C++ one so things look
more intentional.

> +static int ar934x_spi_transfer_one(struct spi_controller *master,
> +				   struct spi_message *m)
> +{
> +	struct ar934x_spi *sp = spi_controller_get_devdata(master);
> +	struct spi_transfer *t = NULL;

...

> +
> +	m->actual_length = 0;
> +	list_for_each_entry(t, &m->transfers, transfer_list) {

It looks like this could just be a transfer_one() operation
instead of transfer_one_message() (which is what this is in spite
of the name)?  There's nothing custom outside this loop that I
can see.

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