FAILED: patch "[PATCH] media: chips-media: wave5: Set inst->std during default" failed to apply to 6.12-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 6.12-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>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y
git checkout FETCH_HEAD
git cherry-pick -x cfcefc5a996f6a00b310c963b5f811430f28a30a
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026090934-extrovert-manatee-136f@gregkh' --subject-prefix 'PATCH 6.12.y' 'HEAD^..'

Possible dependencies:



thanks,

greg k-h

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

From cfcefc5a996f6a00b310c963b5f811430f28a30a Mon Sep 17 00:00:00 2001
From: Jackson Lee <jackson.lee@chipsnmedia.com>
Date: Fri, 26 Jun 2026 10:22:27 +0900
Subject: [PATCH] media: chips-media: wave5: Set inst->std during default
 format initialization
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When the encoder is opened, wave5_set_default_format() sets up the
default capture format (e.g. H.264) but does not initialize inst->std.
As a result, inst->std remains zero, which does not match any valid
encoder codec.

If STREAMON is called before the user explicitly calls S_FMT on the
capture queue — as v4l2-compliance does in testBlockingDQBuf — the
codec/product check in wave5_vpu_enc_init_seq() fails with
"Unsupported encoder-codec & product combination" because inst->std
is neither W_HEVC_ENC nor W_AVC_ENC, returning -EOPNOTSUPP.

Fix this by setting inst->std via wave5_to_vpu_std() in
wave5_set_default_format(), so that the codec type is always consistent
with the default capture pixel format from the moment the instance is
opened.

Fixes: 9707a6254a8a ("media: chips-media: wave5: Add the v4l2 layer")
Cc: stable@vger.kernel.org
Signed-off-by: Jackson Lee <jackson.lee@chipsnmedia.com>
Signed-off-by: Nas Chung <nas.chung@chipsnmedia.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
index e6c94b6f2671..f9fcdf4c224b 100644
--- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
@@ -1494,7 +1494,8 @@ static const struct vb2_ops wave5_vpu_enc_vb2_ops = {
 	.stop_streaming = wave5_vpu_enc_stop_streaming,
 };
 
-static void wave5_set_default_format(struct v4l2_pix_format_mplane *src_fmt,
+static void wave5_set_default_format(struct vpu_instance *inst,
+				     struct v4l2_pix_format_mplane *src_fmt,
 				     struct v4l2_pix_format_mplane *dst_fmt)
 {
 	src_fmt->pixelformat = enc_fmt_list[VPU_FMT_TYPE_RAW][0].v4l2_pix_fmt;
@@ -1506,6 +1507,7 @@ static void wave5_set_default_format(struct v4l2_pix_format_mplane *src_fmt,
 	wave5_update_pix_fmt(dst_fmt, VPU_FMT_TYPE_CODEC,
 			     W5_DEF_ENC_PIC_WIDTH, W5_DEF_ENC_PIC_HEIGHT,
 			     &enc_frmsize[VPU_FMT_TYPE_CODEC]);
+	inst->std = wave5_to_vpu_std(dst_fmt->pixelformat, inst->type);
 }
 
 static int wave5_vpu_enc_queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
@@ -1770,7 +1772,7 @@ static int wave5_vpu_open_enc(struct file *filp)
 	inst->v4l2_fh.ctrl_handler = v4l2_ctrl_hdl;
 	v4l2_ctrl_handler_setup(v4l2_ctrl_hdl);
 
-	wave5_set_default_format(&inst->src_fmt, &inst->dst_fmt);
+	wave5_set_default_format(inst, &inst->src_fmt, &inst->dst_fmt);
 	inst->conf_win.width = inst->dst_fmt.width;
 	inst->conf_win.height = inst->dst_fmt.height;
 	inst->colorspace = V4L2_COLORSPACE_REC709;