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Groups > linux.kernel > #1678872

[PATCH v4 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling

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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>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.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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Thread

[PATCH v4 0/8] [media] s5p-jpeg: Various fixes and improvements Thierry Escande <thierry.escande@collabora.com> - 2017-06-30 16:20 +0200
  [PATCH v4 1/8] [media] s5p-jpeg: Call jpeg_bound_align_image after qbuf Thierry Escande <thierry.escande@collabora.com> - 2017-06-30 16:20 +0200
  [PATCH v4 3/8] [media] s5p-jpeg: Handle parsing error in s5p_jpeg_parse_hdr() Thierry Escande <thierry.escande@collabora.com> - 2017-06-30 16:20 +0200
  [PATCH v4 4/8] [media] s5p-jpeg: Don't use temporary structure in s5p_jpeg_buf_queue Thierry Escande <thierry.escande@collabora.com> - 2017-06-30 16:20 +0200
  [PATCH v4 7/8] [media] s5p-jpeg: Add support for resolution change event Thierry Escande <thierry.escande@collabora.com> - 2017-06-30 16:20 +0200
  [PATCH v4 6/8] [media] s5p-jpeg: Decode 4:1:1 chroma subsampling format Thierry Escande <thierry.escande@collabora.com> - 2017-06-30 16:20 +0200
  [PATCH v4 2/8] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling Thierry Escande <thierry.escande@collabora.com> - 2017-06-30 16:20 +0200
  [PATCH v4 5/8] [media] s5p-jpeg: Split s5p_jpeg_parse_hdr() Thierry Escande <thierry.escande@collabora.com> - 2017-06-30 16:20 +0200

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