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[PATCH v3 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling

Started byThierry Escande <thierry.escande@collabora.com>
First post2017-06-27 18:10 +0200
Last post2017-06-29 14:10 +0200
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  [PATCH v3 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling Thierry Escande <thierry.escande@collabora.com> - 2017-06-27 18:10 +0200
    Re: [PATCH v3 2/8] [media] s5p-jpeg: Correct WARN_ON statement for  checking subsampling Andrzej Pietrasiewicz <andrzej.p@samsung.com> - 2017-06-29 14:10 +0200

#1675953 — [PATCH v3 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling

FromThierry Escande <thierry.escande@collabora.com>
Date2017-06-27 18:10 +0200
Subject[PATCH v3 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling
Message-ID<tX1dV-2UD-35@gated-at.bofh.it>
From: Tony K Nadackal <tony.kn@samsung.com>

Corrects the WARN_ON statement for subsampling based on the
JPEG Hardware version.

Signed-off-by: Tony K Nadackal <tony.kn@samsung.com>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
 drivers/media/platform/s5p-jpeg/jpeg-core.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index 623508d..0d935f5 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -614,24 +614,26 @@ static inline struct s5p_jpeg_ctx *fh_to_ctx(struct v4l2_fh *fh)
 
 static int s5p_jpeg_to_user_subsampling(struct s5p_jpeg_ctx *ctx)
 {
-	WARN_ON(ctx->subsampling > 3);
-
 	switch (ctx->jpeg->variant->version) {
 	case SJPEG_S5P:
+		WARN_ON(ctx->subsampling > 3);
 		if (ctx->subsampling > 2)
 			return V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY;
 		return ctx->subsampling;
 	case SJPEG_EXYNOS3250:
 	case SJPEG_EXYNOS5420:
+		WARN_ON(ctx->subsampling > 6);
 		if (ctx->subsampling > 3)
 			return V4L2_JPEG_CHROMA_SUBSAMPLING_411;
 		return exynos3250_decoded_subsampling[ctx->subsampling];
 	case SJPEG_EXYNOS4:
 	case SJPEG_EXYNOS5433:
+		WARN_ON(ctx->subsampling > 3);
 		if (ctx->subsampling > 2)
 			return V4L2_JPEG_CHROMA_SUBSAMPLING_420;
 		return exynos4x12_decoded_subsampling[ctx->subsampling];
 	default:
+		WARN_ON(ctx->subsampling > 3);
 		return V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY;
 	}
 }
-- 
2.7.4

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#1677660 — Re: [PATCH v3 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling

FromAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Date2017-06-29 14:10 +0200
SubjectRe: [PATCH v3 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling
Message-ID<tXGqK-7pH-19@gated-at.bofh.it>
In reply to#1675953
W dniu 27.06.2017 o 18:08, Thierry Escande pisze:
> From: Tony K Nadackal <tony.kn@samsung.com>
> 
> Corrects the WARN_ON statement for subsampling based on the
> JPEG Hardware version.
> 
> Signed-off-by: Tony K Nadackal <tony.kn@samsung.com>
> Signed-off-by: Thierry Escande <thierry.escande@collabora.com>

Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>

> ---
>   drivers/media/platform/s5p-jpeg/jpeg-core.c | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
> index 623508d..0d935f5 100644
> --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
> +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
> @@ -614,24 +614,26 @@ static inline struct s5p_jpeg_ctx *fh_to_ctx(struct v4l2_fh *fh)
>   
>   static int s5p_jpeg_to_user_subsampling(struct s5p_jpeg_ctx *ctx)
>   {
> -	WARN_ON(ctx->subsampling > 3);
> -
>   	switch (ctx->jpeg->variant->version) {
>   	case SJPEG_S5P:
> +		WARN_ON(ctx->subsampling > 3);
>   		if (ctx->subsampling > 2)
>   			return V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY;
>   		return ctx->subsampling;
>   	case SJPEG_EXYNOS3250:
>   	case SJPEG_EXYNOS5420:
> +		WARN_ON(ctx->subsampling > 6);
>   		if (ctx->subsampling > 3)
>   			return V4L2_JPEG_CHROMA_SUBSAMPLING_411;
>   		return exynos3250_decoded_subsampling[ctx->subsampling];
>   	case SJPEG_EXYNOS4:
>   	case SJPEG_EXYNOS5433:
> +		WARN_ON(ctx->subsampling > 3);
>   		if (ctx->subsampling > 2)
>   			return V4L2_JPEG_CHROMA_SUBSAMPLING_420;
>   		return exynos4x12_decoded_subsampling[ctx->subsampling];
>   	default:
> +		WARN_ON(ctx->subsampling > 3);
>   		return V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY;
>   	}
>   }
> 

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