[PATCH] s5p-mfc: limit the size of the CPB

[panpan liu]

The register of the CPB limits the size. The max size is 4M, so it
is more reasonable.

Change-Id: I4ffe90ac8b4de7aed8f396b3072d5db6ead9741c
Signed-off-by: panpan liu <panpan1.liu at samsung.com>
---
 drivers/media/platform/s5p-mfc/s5p_mfc_dec.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)
 mode change 100644 => 100755 drivers/media/platform/s5p-mfc/s5p_mfc_dec.c

diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
old mode 100644
new mode 100755
index 0bae907..70b9458
--- a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
@@ -413,7 +413,8 @@ static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
 	int ret = 0;
 	struct s5p_mfc_fmt *fmt;
 	struct v4l2_pix_format_mplane *pix_mp;
-
+	struct s5p_mfc_buf_size *buf_size = dev->variant->buf_size;
+
 	mfc_debug_enter();
 	ret = vidioc_try_fmt(file, priv, f);
 	pix_mp = &f->fmt.pix_mp;
@@ -466,11 +467,13 @@ static int vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
 	mfc_debug(2, "The codec number is: %d\n", ctx->codec_mode);
 	pix_mp->height = 0;
 	pix_mp->width = 0;
-	if (pix_mp->plane_fmt[0].sizeimage)
-		ctx->dec_src_buf_size = pix_mp->plane_fmt[0].sizeimage;
-	else
+	if (pix_mp->plane_fmt[0].sizeimage == 0)
 		pix_mp->plane_fmt[0].sizeimage = ctx->dec_src_buf_size =
 								DEF_CPB_SIZE;
+	else if(pix_mp->plane_fmt[0].sizeimage > buf_size->cpb)
+		ctx->dec_src_buf_size = buf_size->cpb;
+	else
+		ctx->dec_src_buf_size = pix_mp->plane_fmt[0].sizeimage;
 	pix_mp->plane_fmt[0].bytesperline = 0;
 	ctx->state = MFCINST_INIT;
 out:
--
1.7.9.5