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Message-ID: <20241015102235.GF5682@pendragon.ideasonboard.com>
Date: Tue, 15 Oct 2024 13:22:35 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
Biju Das <biju.das.jz@...renesas.com>,
Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v5 10/22] media: rzg2l-cru: Remove unnecessary WARN_ON
check in format func
Hi Prabhakar,
Thank you for the patch.
On Fri, Oct 11, 2024 at 06:30:40PM +0100, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> `WARN_ON(!fmt)` check in `rzg2l_cru_format_bytesperline()` is unnecessary
> because the `rzg2l_cru_format_align()` function ensures that a valid
> `pixelformat` is set before calling `rzg2l_cru_format_bytesperline()`. As
> a result, `rzg2l_cru_format_from_pixel()` is guaranteed to return a
> non-NULL value, making the check redundant.
>
> Additionally, the return type of `rzg2l_cru_format_bytesperline()` is
> `u32`, but the code returned `-EINVAL`, a negative value. This mismatch is
> now resolved by removing the invalid error return path.
s/now /now /
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
> ---
> drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> index de88c0fab961..401ef7be58ec 100644
> --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> @@ -835,9 +835,6 @@ static u32 rzg2l_cru_format_bytesperline(struct v4l2_pix_format *pix)
>
> fmt = rzg2l_cru_format_from_pixel(pix->pixelformat);
>
> - if (WARN_ON(!fmt))
> - return -EINVAL;
> -
> return pix->width * fmt->bpp[0];
> }
>
--
Regards,
Laurent Pinchart
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