[PATCH 1/3] media: qcom: venus: drop extra padding in NV12 raw size calculation

Renjiang Han
2026-03-31T04:37:40Z

get_framesize_raw_nv12() currently adds SZ_4K to the UV plane size and an
additional SZ_8K to the total buffer size. This inflates the calculated
sizeimage and leads userspace to over-allocate buffers without a clear
requirement.

Remove the extra SZ_4K/SZ_8K padding and compute the NV12 size as the sum
of Y and UV planes, keeping the final ALIGN(size, SZ_4K) intact.

Fixes: e1cb72de702ad ("media: venus: helpers: move frame size calculations on common place")
Signed-off-by: Renjiang Han <renjiang.han@oss.qualcomm.com>
---
drivers/media/platform/qcom/venus/helpers.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
index 747c388fe25fa30770ac2e81d42f4daf83d74ddf..59eee3dd9e06c27165f29fc034d151eb13cd2349 100644
--- a/drivers/media/platform/qcom/venus/helpers.c
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -954,8 +954,8 @@ static u32 get_framesize_raw_nv12(u32 width, u32 height)
uv_sclines = ALIGN(((height + 1) >> 1), 16);

y_plane = y_stride * y_sclines;
- uv_plane = uv_stride * uv_sclines + SZ_4K;
- size = y_plane + uv_plane + SZ_8K;
+ uv_plane = uv_stride * uv_sclines;
+ size = y_plane + uv_plane;

return ALIGN(size, SZ_4K);
}

--
2.34.1