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From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org, irui.wang@mediatek.com
Cc: AngeloGioacchino Del Regno
	<angelogioacchino.delregno@collabora.com>,
	Nicolas Dufresne <nicolas.dufresne@collabora.com>,
	Hans Verkuil <hverkuil+cisco@kernel.org>,
	linux-media@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org
Subject: FAILED: Patch "media: mediatek: encoder: Fix uninitialized scalar variable issue" failed to apply to 6.1-stable tree
Date: Sat, 28 Feb 2026 20:40:40 -0500	[thread overview]
Message-ID: <20260301014040.1701969-1-sashal@kernel.org> (raw)

The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From 88e935de7cf8795d7a6a51385db87ecb361a7050 Mon Sep 17 00:00:00 2001
From: Irui Wang <irui.wang@mediatek.com>
Date: Sun, 7 Sep 2025 17:35:56 +0800
Subject: [PATCH] media: mediatek: encoder: Fix uninitialized scalar variable
 issue

UNINIT checker finds some instances of variables that are used
without being initialized, for example using the uninitialized
value enc_result.is_key_frm can result in unpredictable behavior,
so initialize these variables after declaring.

Fixes: 4e855a6efa54 ("[media] vcodec: mediatek: Add Mediatek V4L2 Video Encoder Driver")
Cc: stable@vger.kernel.org
Signed-off-by: Irui Wang <irui.wang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
---
 .../media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
index 6faf3f659e751..b3a0a1d8b7a8e 100644
--- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
@@ -850,7 +850,7 @@ static void vb2ops_venc_buf_queue(struct vb2_buffer *vb)
 static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
 {
 	struct mtk_vcodec_enc_ctx *ctx = vb2_get_drv_priv(q);
-	struct venc_enc_param param;
+	struct venc_enc_param param = { };
 	int ret;
 	int i;
 
@@ -1004,7 +1004,7 @@ static int mtk_venc_encode_header(void *priv)
 	int ret;
 	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	struct mtk_vcodec_mem bs_buf;
-	struct venc_done_result enc_result;
+	struct venc_done_result enc_result = { };
 
 	dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
 	if (!dst_buf) {
@@ -1125,7 +1125,7 @@ static void mtk_venc_worker(struct work_struct *work)
 	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	struct venc_frm_buf frm_buf;
 	struct mtk_vcodec_mem bs_buf;
-	struct venc_done_result enc_result;
+	struct venc_done_result enc_result = { };
 	int ret, i;
 
 	/* check dst_buf, dst_buf may be removed in device_run
-- 
2.51.0





                 reply	other threads:[~2026-03-01  1:40 UTC|newest]

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