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[media] s5p-jpeg: Adjust buffer size for Exynos 4412 

Eliminate iommu fault during encoding by adjusting image size
used for buffer size computation and ensuring that the buffer
is not overrun.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Andrzej Pietrasiewicz 2015-12-08 12:39:08 -02:00 committed by Mauro Carvalho Chehab
parent 5790a1589f
commit 77401dd739
1 changed files with 6 additions and 1 deletions
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7
drivers/media/platform/s5p-jpeg/jpeg-core.c
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@ -1548,8 +1548,10 @@ static int exynos4_jpeg_get_output_buffer_size(struct s5p_jpeg_ctx *ctx,
struct v4l2_pix_format *pix = &f->fmt.pix;
u32 pix_fmt = f->fmt.pix.pixelformat;
int w = pix->width, h = pix->height, wh_align;
int padding = 0;
if (pix_fmt == V4L2_PIX_FMT_RGB32 ||
pix_fmt == V4L2_PIX_FMT_RGB565 ||
pix_fmt == V4L2_PIX_FMT_NV24 ||
pix_fmt == V4L2_PIX_FMT_NV42 ||
pix_fmt == V4L2_PIX_FMT_NV12 ||
@ -1564,7 +1566,10 @@ static int exynos4_jpeg_get_output_buffer_size(struct s5p_jpeg_ctx *ctx,
&h, S5P_JPEG_MIN_HEIGHT,
S5P_JPEG_MAX_HEIGHT, wh_align);
return w * h * fmt_depth >> 3;
if (ctx->jpeg->variant->version == SJPEG_EXYNOS4)
padding = PAGE_SIZE;
return (w * h * fmt_depth >> 3) + padding;
}
static int exynos3250_jpeg_try_downscale(struct s5p_jpeg_ctx *ctx,