linux-kernel - Re: [PATCH v2 1/2] media: bcm2835-unicam: Do not replace IRQ retcode during probe

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Date: Tue, 7 May 2024 09:08:15 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Ricardo Ribalda <ribalda@...omium.org>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>,
	linux-media@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Hans Verkuil <hverkuil@...all.nl>
Subject: Re: [PATCH v2 1/2] media: bcm2835-unicam: Do not replace IRQ retcode
 during probe

Hi Ricardo,

Thank you for the patch.

On Mon, May 06, 2024 at 07:24:46PM +0000, Ricardo Ribalda wrote:
> platform_get_irq() cannot return the value 0. It will either return a non-zero
> irq or a errcode.
> 
> If a errcode is returned, we need to populate the error code upwards. It will
> give a more accurate reason of why it failed to the caller, who might decide
> to retry later.
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

Aren't git commit messages supposed to be wrapped at 72 columns ?

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

> ---
>  drivers/media/platform/broadcom/bcm2835-unicam.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/media/platform/broadcom/bcm2835-unicam.c b/drivers/media/platform/broadcom/bcm2835-unicam.c
> index bd2bbb53070e..60c0fe956c58 100644
> --- a/drivers/media/platform/broadcom/bcm2835-unicam.c
> +++ b/drivers/media/platform/broadcom/bcm2835-unicam.c
> @@ -2660,9 +2660,8 @@ static int unicam_probe(struct platform_device *pdev)
>  	}
>  
>  	ret = platform_get_irq(pdev, 0);
> -	if (ret <= 0) {
> +	if (ret < 0) {
>  		dev_err(&pdev->dev, "No IRQ resource\n");
> -		ret = -EINVAL;
>  		goto err_unicam_put;
>  	}
>  
> @@ -2670,7 +2669,6 @@ static int unicam_probe(struct platform_device *pdev)
>  			       "unicam_capture0", unicam);
>  	if (ret) {
>  		dev_err(&pdev->dev, "Unable to request interrupt\n");
> -		ret = -EINVAL;
>  		goto err_unicam_put;
>  	}
>  

-- 
Regards,

Laurent Pinchart