[PATCH v3 08/11] media: verisilicon: postproc: Fix down scale test

Benjamin Gaignard
2023-06-22T13:14:36Z

Do not allow down scaling if the source buffer resolution is
smaller than destination one.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/platform/verisilicon/hantro_postproc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index a6b67d0cc66c..a4f2c5e8932c 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -103,7 +103,10 @@ static void hantro_postproc_g1_enable(struct hantro_ctx *ctx)

static int down_scale_factor(struct hantro_ctx *ctx)
{
- if (ctx->src_fmt.width == ctx->dst_fmt.width)
+ if (ctx->src_fmt.width <= ctx->dst_fmt.width)
+ return 0;
+
+ if (ctx->src_fmt.height <= ctx->dst_fmt.height)
return 0;

return DIV_ROUND_CLOSEST(ctx->src_fmt.width, ctx->dst_fmt.width);
--
2.39.2