linux-kernel - Re: [PATCH 06/35] media: stm32-dcmipp: Remove redundant printk

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Date: Tue, 16 Apr 2024 10:30:11 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Ricardo Ribalda <ribalda@...omium.org>
Cc: Martin Tuma <martin.tuma@...iteqautomotive.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
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Subject: Re: [PATCH 06/35] media: stm32-dcmipp: Remove redundant printk

On Mon, Apr 15, 2024 at 07:34:23PM +0000, Ricardo Ribalda wrote:
> platform_get_irq() already prints an error message.
> 
> Found by cocci:
> drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c:444:3-10: line 444 is redundant because platform_get_irq() already prints an error
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
> ---
>  drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c
> index bce821eb71ce..c25027b0ca32 100644
> --- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c
> +++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c
> @@ -439,11 +439,8 @@ static int dcmipp_probe(struct platform_device *pdev)
>  				     "Could not get reset control\n");
>  
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq <= 0) {
> -		if (irq != -EPROBE_DEFER)
> -			dev_err(&pdev->dev, "Could not get irq\n");
> +	if (irq <= 0)
>  		return irq ? irq : -ENXIO;

platform_get_irq() can never return zero so this should be written as:

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;

There is a comment next to platform_get_irq() which documents this.

regards,
dan carpenter