Fix overflow risk when setting certain formats whose frame size exceeds
a RGB24 with 7723x7723 resolution.
For example, a 7723x7724 RGB24 frame:
1. bpl (byte per line) = 7723 * 3.
2. Overflow occurs when bpl * 7724 * depth.
Fixes: 61890ccaefaf ("media: platform: mtk-mdp3: add MediaTek MDP3 driver")
Signed-off-by: Moudy Ho <moudy.ho@xxxxxxxxxxxx>
---
drivers/media/platform/mediatek/mdp3/mtk-mdp3-regs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-regs.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-regs.c
index 4e84a37ecdfc..c63bd5e479e0 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-regs.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-regs.c
@@ -432,9 +432,9 @@ const struct mdp_format *mdp_try_fmt_mplane(struct v4l2_format *f,
bpl = clamp(bpl, min_bpl, max_bpl);
pix_mp->plane_fmt[i].bytesperline = bpl;
- min_si = (bpl * pix_mp->height * fmt->depth[i]) /
+ min_si = ((u64)bpl * pix_mp->height * fmt->depth[i]) /
fmt->row_depth[i];
- max_si = (bpl * s.max_height * fmt->depth[i]) /
+ max_si = ((u64)bpl * s.max_height * fmt->depth[i]) /
fmt->row_depth[i];
si = clamp(si, min_si, max_si);
--
2.18.0
