linux-kernel - Re: [PATCH v6 09/57] devfreq: Remove dev_err() usage after platform_get

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Date:   Wed, 31 Jul 2019 09:21:07 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Stephen Boyd <swboyd@...omium.org>, linux-kernel@...r.kernel.org
Cc:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        linux-pm@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v6 09/57] devfreq: Remove dev_err() usage after
 platform_get_irq()

On 19. 7. 31. 오전 3:15, Stephen Boyd wrote:
> We don't need dev_err() messages when platform_get_irq() fails now that
> platform_get_irq() prints an error message itself when something goes
> wrong. Let's remove these prints with a simple semantic patch.
> 
> // <smpl>
> @@
> expression ret;
> struct platform_device *E;
> @@
> 
> ret =
> (
> platform_get_irq(E, ...)
> |
> platform_get_irq_byname(E, ...)
> );
> 
> if ( \( ret < 0 \| ret <= 0 \) )
> {
> (
> -if (ret != -EPROBE_DEFER)
> -{ ...
> -dev_err(...);
> -... }
> |
> ...
> -dev_err(...);
> )
> ...
> }
> // </smpl>
> 
> While we're here, remove braces on if statements that only have one
> statement (manually).
> 
> Cc: MyungJoo Ham <myungjoo.ham@...sung.com>
> Cc: Kyungmin Park <kyungmin.park@...sung.com>
> Cc: Chanwoo Choi <cw00.choi@...sung.com>
> Cc: linux-pm@...r.kernel.org
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> ---
> 
> Please apply directly to subsystem trees
> 
>  drivers/devfreq/tegra-devfreq.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
> index 35c38aad8b4f..ffd17aba7533 100644
> --- a/drivers/devfreq/tegra-devfreq.c
> +++ b/drivers/devfreq/tegra-devfreq.c
> @@ -674,10 +674,8 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
>  	}
>  
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq < 0) {
> -		dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq);
> +	if (irq < 0)
>  		return irq;
> -	}
>  
>  	platform_set_drvdata(pdev, tegra);
>  
> 

Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>


-- 
Best Regards,
Chanwoo Choi
Samsung Electronics