linux-kernel - Re: [PATCH] spi: dw: Add deferred controller registration support

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Message-ID: <CAHp75VefTEy7jFAFnZe5A+d+2+984RMRDqxtPDJnd+E+dbZw=w@mail.gmail.com>
Date:   Tue, 23 Aug 2022 00:38:45 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Serge Semin <fancer.lancer@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-spi <linux-spi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] spi: dw: Add deferred controller registration support

On Mon, Aug 22, 2022 at 9:19 PM Serge Semin
<Sergey.Semin@...kalelectronics.ru> wrote:
>
> It's pretty possible to have the spi_register_controller() method
> returning -EPROBE_DEFER status in case, for instance, if the GPIOs used
> for the CS implementation aren't ready to be requested due to the
> corresponding platform devices still pending to be probed. Let's make sure
> the DW SSI driver won't print error message in that case by calling the
> dev_err_probe() function if the SPI-registration procedure exited with
> a non-zero status.

Shouldn't there be a Fixes tag?

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> ---
>  drivers/spi/spi-dw-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c
> index f87d97ccd2d6..99edddf9958b 100644
> --- a/drivers/spi/spi-dw-core.c
> +++ b/drivers/spi/spi-dw-core.c
> @@ -955,7 +955,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
>
>         ret = spi_register_controller(master);
>         if (ret) {
> -               dev_err(&master->dev, "problem registering spi master\n");
> +               dev_err_probe(dev, ret, "problem registering spi master\n");
>                 goto err_dma_exit;
>         }
>
> --
> 2.35.1
>


-- 
With Best Regards,
Andy Shevchenko