linux-kernel - Re: [PATCH 5/6] pwm: sprd: Simplify with dev_err

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Date:   Thu, 27 Aug 2020 10:01:43 +0800
From:   Chunyan Zhang <zhang.lyra@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Lee Jones <lee.jones@...aro.org>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Paul Cercueil <paul@...pouillou.net>,
        Heiko Stuebner <heiko@...ech.de>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>, linux-pwm@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-rockchip@...ts.infradead.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH 5/6] pwm: sprd: Simplify with dev_err_probe()

On Wed, 26 Aug 2020 at 22:48, Krzysztof Kozlowski <krzk@...nel.org> wrote:
>
> Common pattern of handling deferred probe can be simplified with
> dev_err_probe().  Less code and also it prints the error value.
>
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

Acked-by: Chunyan Zhang <zhang.lyra@...il.com>

Thanks!

> ---
>  drivers/pwm/pwm-sprd.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/pwm/pwm-sprd.c b/drivers/pwm/pwm-sprd.c
> index be2394227423..5123d948efd6 100644
> --- a/drivers/pwm/pwm-sprd.c
> +++ b/drivers/pwm/pwm-sprd.c
> @@ -228,11 +228,8 @@ static int sprd_pwm_clk_init(struct sprd_pwm_chip *spc)
>                         if (ret == -ENOENT)
>                                 break;
>
> -                       if (ret != -EPROBE_DEFER)
> -                               dev_err(spc->dev,
> -                                       "failed to get channel clocks\n");
> -
> -                       return ret;
> +                       return dev_err_probe(spc->dev, ret,
> +                                            "failed to get channel clocks\n");
>                 }
>
>                 clk_pwm = chn->clks[SPRD_PWM_CHN_OUTPUT_CLK].clk;
> --
> 2.17.1
>