linux-kernel - Re: [PATCH v2 2/2] spi: loongson: add bus driver for the loongson spi controller

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Date:   Thu, 23 Mar 2023 13:59:21 +0000
From:   Mark Brown <broonie@...nel.org>
To:     zhuyinbo <zhuyinbo@...ngson.cn>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jianmin Lv <lvjianmin@...ngson.cn>,
        wanghongliang@...ngson.cn, Liu Peibao <liupeibao@...ngson.cn>,
        loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH v2 2/2] spi: loongson: add bus driver for the loongson
 spi controller

On Thu, Mar 23, 2023 at 08:46:19PM +0800, zhuyinbo wrote:

> I think add following change and that issue what you said will can be
> fixed,   in addition, the spin_lock

> was also not needed.   Do you think so?

> @@ -101,8 +101,10 @@ static int loongson_spi_setup(struct spi_device *spi)
>         if (spi->chip_select >= spi->master->num_chipselect)
>                 return -EINVAL;
> 
> +       loongson_spi->hz = 0;
> +       loongson_spi->mode &= SPI_NO_CS;
> +
>         spin_lock(&loongson_spi->lock);
> -       loongson_spi_update_state(loongson_spi, spi, NULL);

Looks plausible, yes - I'd need to see the full thing to verify.

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