From: Tony K Nadackal <tony.kn@samsung.com>
Date: Fri, 30 Jun 2017 14:15:41 +0000 (-0400)
Subject: media: s5p-jpeg: Correct WARN_ON statement for checking subsampling
X-Git-Tag: v4.14-rc1~113^2~453
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=fa3cb90bdfc64122f50ce9c1a6090cb720361463;p=linux.git

media: s5p-jpeg: Correct WARN_ON statement for checking subsampling

Correct 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>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---

diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index 97e5518520b3..4c672a0f1418 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;
 	}
 }