Thread (10 messages) 10 messages, 2 authors, 2023-02-18

Re: [PATCH v8 2/6] media: verisilicon: Do not use ctx fields as format storage when resetting

From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Date: 2023-02-18 12:56:29
Also in: linux-media, linux-rockchip, lkml

Hi Benjamin,

On Fri, Feb 3 2023 at 10:16:18 AM +0100, Benjamin Gaignard 
[off-list ref] wrote:
Source and destination pixel formats fields of context structure 
should
not be used as storage when resetting the format.
Use local variables instead and let hantro_set_fmt_out() and
hantro_set_fmt_cap() set them correctly later.

Fixes: dc39473d0340 ("media: hantro: imx8m: Enable 10bit decoding")
The above Fixes tag looks incorrect. I am unsure what would be the
right Fixes, perhaps we can avoid putting any?

Same for all the other patches, the Fixes tag look wrong.

Thanks,
Ezequiel
quoted hunk ↗ jump to hunk
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
 .../media/platform/verisilicon/hantro_v4l2.c  | 40 
+++++++++----------
 1 file changed, 18 insertions(+), 22 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c 
b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 33cb865238de..e60151a8a401 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -377,47 +377,43 @@ static void
 hantro_reset_encoded_fmt(struct hantro_ctx *ctx)
 {
 	const struct hantro_fmt *vpu_fmt;
-	struct v4l2_pix_format_mplane *fmt;
+	struct v4l2_pix_format_mplane fmt;

 	vpu_fmt = hantro_get_default_fmt(ctx, true);
+	if (!vpu_fmt)
+		return;

+	hantro_reset_fmt(&fmt, vpu_fmt);
+	fmt.width = vpu_fmt->frmsize.min_width;
+	fmt.height = vpu_fmt->frmsize.min_height;
 	if (ctx->is_encoder)
-		fmt = &ctx->dst_fmt;
-	else
-		fmt = &ctx->src_fmt;
-
-	hantro_reset_fmt(fmt, vpu_fmt);
-	fmt->width = vpu_fmt->frmsize.min_width;
-	fmt->height = vpu_fmt->frmsize.min_height;
-	if (ctx->is_encoder)
-		hantro_set_fmt_cap(ctx, fmt);
+		hantro_set_fmt_cap(ctx, &fmt);
 	else
-		hantro_set_fmt_out(ctx, fmt);
+		hantro_set_fmt_out(ctx, &fmt);
 }

 static void
 hantro_reset_raw_fmt(struct hantro_ctx *ctx)
 {
 	const struct hantro_fmt *raw_vpu_fmt;
-	struct v4l2_pix_format_mplane *raw_fmt, *encoded_fmt;
+	struct v4l2_pix_format_mplane raw_fmt, *encoded_fmt;

 	raw_vpu_fmt = hantro_get_default_fmt(ctx, false);
+	if (!raw_vpu_fmt)
+		return;

-	if (ctx->is_encoder) {
-		raw_fmt = &ctx->src_fmt;
+	if (ctx->is_encoder)
 		encoded_fmt = &ctx->dst_fmt;
-	} else {
-		raw_fmt = &ctx->dst_fmt;
+	else
 		encoded_fmt = &ctx->src_fmt;
-	}

-	hantro_reset_fmt(raw_fmt, raw_vpu_fmt);
-	raw_fmt->width = encoded_fmt->width;
-	raw_fmt->height = encoded_fmt->height;
+	hantro_reset_fmt(&raw_fmt, raw_vpu_fmt);
+	raw_fmt.width = encoded_fmt->width;
+	raw_fmt.height = encoded_fmt->height;
 	if (ctx->is_encoder)
-		hantro_set_fmt_out(ctx, raw_fmt);
+		hantro_set_fmt_out(ctx, &raw_fmt);
 	else
-		hantro_set_fmt_cap(ctx, raw_fmt);
+		hantro_set_fmt_cap(ctx, &raw_fmt);
 }

 void hantro_reset_fmts(struct hantro_ctx *ctx)
--
2.34.1


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