linux-kernel - Re: [PATCH] cpufreq: qcom-kryo: Silently error out on EPROBE

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Message-ID: <CAHLCerMfcjjjEmHZthA23V1WfrS6x05h2a-LZRpQjCKLyZVSzQ@mail.gmail.com>
Date:   Wed, 18 Jul 2018 15:51:25 +0530
From:   Amit Kucheria <amit.kucheria@...durent.com>
To:     Niklas Cassel <niklas.cassel@...aro.org>
Cc:     Ilia Lin <ilia.lin@...il.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: qcom-kryo: Silently error out on EPROBE_DEFER

On Wed, Jul 18, 2018 at 2:18 AM, Niklas Cassel <niklas.cassel@...aro.org> wrote:
> If of_nvmem_cell_get() fails due to probe deferal, we shouldn't print an
> error message. Just be silent in this case.
>
> Signed-off-by: Niklas Cassel <niklas.cassel@...aro.org>

Reviewed-by: Amit Kucheria <amit.kucheria@...aro.org>

> ---
>  drivers/cpufreq/qcom-cpufreq-kryo.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/cpufreq/qcom-cpufreq-kryo.c b/drivers/cpufreq/qcom-cpufreq-kryo.c
> index 29389accf3e9..b8d1e6875f16 100644
> --- a/drivers/cpufreq/qcom-cpufreq-kryo.c
> +++ b/drivers/cpufreq/qcom-cpufreq-kryo.c
> @@ -109,8 +109,9 @@ static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
>         speedbin_nvmem = of_nvmem_cell_get(np, NULL);
>         of_node_put(np);
>         if (IS_ERR(speedbin_nvmem)) {
> -               dev_err(cpu_dev, "Could not get nvmem cell: %ld\n",
> -                       PTR_ERR(speedbin_nvmem));
> +               if (PTR_ERR(speedbin_nvmem) != -EPROBE_DEFER)
> +                       dev_err(cpu_dev, "Could not get nvmem cell: %ld\n",
> +                               PTR_ERR(speedbin_nvmem));
>                 return PTR_ERR(speedbin_nvmem);
>         }
>
> --
> 2.17.1
>