diff mbox series

[v5,1/5] media: mediatek: vcodec: setting request complete before buffer done

Message ID 20241012064333.27269-2-yunfei.dong@mediatek.com (mailing list archive)
State New
Headers show
Series media: mediatek: vcodec: fix v4l2_ctrl_request_complete fail | expand

Commit Message

Yunfei Dong Oct. 12, 2024, 6:43 a.m. UTC 
The request status of output queue is set to MEDIA_REQUEST_STATE_COMPLETE
when user space dequeue output buffer. Will get below warning if the
driver calling v4l2_ctrl_request_complete to set media request complete,
must to change the function order, calling v4l2_ctrl_request_complete
before v4l2_m2m_buf_done.

Workqueue: core-decoder vdec_msg_queue_core_work [mtk_vcodec_dec]
pstate: 80c00089 (Nzcv daIf +PAN +UAO -TCO BTYPE=--)
pc : media_request_object_bind+0xa8/0x124
lr : media_request_object_bind+0x50/0x124
sp : ffffffc011393be0
x29: ffffffc011393be0 x28: 0000000000000000
x27: ffffff890c280248 x26: ffffffe21a71ab88
x25: 0000000000000000 x24: ffffff890c280280
x23: ffffff890c280280 x22: 00000000fffffff0
x21: 0000000000000000 x20: ffffff890260d280
x19: ffffff890260d2e8 x18: 0000000000001000
x17: 0000000000000400 x16: ffffffe21a4584a0
x15: 000000000053361d x14: 0000000000000018
x13: 0000000000000004 x12: ffffffa82427d000
x11: ffffffe21ac3fce0 x10: 0000000000000001
x9 : 0000000000000000 x8 : 0000000000000003
x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : ffffff89052e7b98
x3 : 0000000000000000 x2 : 0000000000000001
x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 media_request_object_bind+0xa8/0x124
 v4l2_ctrl_request_bind+0xc4/0x168
 v4l2_ctrl_request_complete+0x198/0x1f4
 mtk_vdec_stateless_cap_to_disp+0x58/0x8c [mtk_vcodec_dec 245a7c1e48ff1b2451a50e1dfcb174262b6b462c]
 vdec_vp9_slice_core_decode+0x1c0/0x268 [mtk_vcodec_dec 245a7c1e48ff1b2451a50e1dfcb174262b6b462c]
 vdec_msg_queue_core_work+0x60/0x11c [mtk_vcodec_dec 245a7c1e48ff1b2451a50e1dfcb174262b6b462c]
 process_one_work+0x140/0x480
 worker_thread+0x12c/0x2f8
 kthread+0x13c/0x1d8
 ret_from_fork+0x10/0x30

Fixes: 7b182b8d9c852 ("media: mediatek: vcodec: Refactor get and put capture buffer flow")
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
 .../mediatek/vcodec/decoder/mtk_vcodec_dec.c        |  4 ++--
 .../mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h    |  2 +-
 .../vcodec/decoder/mtk_vcodec_dec_stateless.c       | 13 ++++++++-----
 .../vcodec/decoder/vdec/vdec_av1_req_lat_if.c       |  7 ++++---
 .../vcodec/decoder/vdec/vdec_h264_req_multi_if.c    |  4 ++--
 .../vcodec/decoder/vdec/vdec_hevc_req_multi_if.c    |  4 ++--
 .../vcodec/decoder/vdec/vdec_vp9_req_lat_if.c       |  6 +++---
 .../mediatek/vcodec/decoder/vdec_msg_queue.h        |  4 ++--
 8 files changed, 24 insertions(+), 20 deletions(-)

Comments

Dan Carpenter Oct. 21, 2024, 7:26 a.m. UTC | #1 
Hi Yunfei,

kernel test robot noticed the following build warnings:

https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Yunfei-Dong/media-mediatek-vcodec-setting-request-complete-before-buffer-done/20241012-144607
base:   git://linuxtv.org/media_tree.git master
patch link:    https://lore.kernel.org/r/20241012064333.27269-2-yunfei.dong%40mediatek.com
patch subject: [PATCH v5 1/5] media: mediatek: vcodec: setting request complete before buffer done
config: arm-randconfig-r072-20241016 (https://download.01.org/0day-ci/archive/20241019/202410192150.2YkqysDO-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.1.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
| Closes: https://lore.kernel.org/r/202410192150.2YkqysDO-lkp@intel.com/

smatch warnings:
drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c:272 mtk_vdec_stateless_cap_to_disp() warn: variable dereferenced before check 'vb2_v4l2_src' (see line 268)

vim +/vb2_v4l2_src +272 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c

01abf5fbb081c0 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2023-07-29  247  static void mtk_vdec_stateless_cap_to_disp(struct mtk_vcodec_dec_ctx *ctx, int error,
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12  248  					   struct vb2_v4l2_buffer *vb2_v4l2_src)
8cdc3794b2e34b drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c              Yunfei Dong 2021-08-06  249  {
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  250  	struct vb2_v4l2_buffer *vb2_dst;
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  251  	enum vb2_buffer_state state;
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12  252  	struct media_request *src_buf_req;
8cdc3794b2e34b drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c              Yunfei Dong 2021-08-06  253  
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  254  	if (error)
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  255  		state = VB2_BUF_STATE_ERROR;
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  256  	else
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  257  		state = VB2_BUF_STATE_DONE;
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  258  
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  259  	vb2_dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
d879f770e4d1d5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-11-17  260  	if (vb2_dst) {
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  261  		v4l2_m2m_buf_done(vb2_dst, state);
41f03c673cb7b5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2023-07-29  262  		mtk_v4l2_vdec_dbg(2, ctx, "free frame buffer id:%d to done list",
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  263  				  vb2_dst->vb2_buf.index);
d879f770e4d1d5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-11-17  264  	} else {
41f03c673cb7b5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2023-07-29  265  		mtk_v4l2_vdec_err(ctx, "dst buffer is NULL");
d879f770e4d1d5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-11-17  266  	}
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  267  
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12 @268  	src_buf_req = vb2_v4l2_src->vb2_buf.req_obj.req;
                                                                                                                                      ^^^^^^^^^^^^^^^
Dereference

7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  269  	if (src_buf_req)
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  270  		v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12  271  
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12 @272  	if (vb2_v4l2_src)
                                                                                                                            ^^^^^^^^^^^^
Checked too late

5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12  273  		v4l2_m2m_buf_done(vb2_v4l2_src, state);
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c         Yunfei Dong 2022-05-12  274  }
diff mbox series

Patch

diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
index 98838217b97d..2b787e60a1f9 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
@@ -887,10 +887,10 @@  void vb2ops_vdec_stop_streaming(struct vb2_queue *q)
 			if (src_buf != &ctx->empty_flush_buf.vb) {
 				struct media_request *req =
 					src_buf->vb2_buf.req_obj.req;
-				v4l2_m2m_buf_done(src_buf,
-						VB2_BUF_STATE_ERROR);
+
 				if (req)
 					v4l2_ctrl_request_complete(req, &ctx->ctrl_hdl);
+				v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
 			}
 		}
 		return;
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h
index ac568ed14fa2..1fabe8c5b7a4 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h
@@ -111,7 +111,7 @@  struct mtk_vcodec_dec_pdata {
 	int (*flush_decoder)(struct mtk_vcodec_dec_ctx *ctx);
 	struct vdec_fb *(*get_cap_buffer)(struct mtk_vcodec_dec_ctx *ctx);
 	void (*cap_to_disp)(struct mtk_vcodec_dec_ctx *ctx, int error,
-			    struct media_request *src_buf_req);
+			    struct vb2_v4l2_buffer *vb2_v4l2_src);
 
 	const struct vb2_ops *vdec_vb2_ops;
 
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
index 3307dc15fc1d..fe8ff379ebe8 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
@@ -245,10 +245,11 @@  static const struct v4l2_frmsize_stepwise stepwise_fhd = {
 };
 
 static void mtk_vdec_stateless_cap_to_disp(struct mtk_vcodec_dec_ctx *ctx, int error,
-					   struct media_request *src_buf_req)
+					   struct vb2_v4l2_buffer *vb2_v4l2_src)
 {
 	struct vb2_v4l2_buffer *vb2_dst;
 	enum vb2_buffer_state state;
+	struct media_request *src_buf_req;
 
 	if (error)
 		state = VB2_BUF_STATE_ERROR;
@@ -264,8 +265,12 @@  static void mtk_vdec_stateless_cap_to_disp(struct mtk_vcodec_dec_ctx *ctx, int e
 		mtk_v4l2_vdec_err(ctx, "dst buffer is NULL");
 	}
 
+	src_buf_req = vb2_v4l2_src->vb2_buf.req_obj.req;
 	if (src_buf_req)
 		v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
+
+	if (vb2_v4l2_src)
+		v4l2_m2m_buf_done(vb2_v4l2_src, state);
 }
 
 static struct vdec_fb *vdec_get_cap_buffer(struct mtk_vcodec_dec_ctx *ctx)
@@ -374,14 +379,12 @@  static void mtk_vdec_worker(struct work_struct *work)
 	state = ret ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE;
 	if (!IS_VDEC_LAT_ARCH(dev->vdec_pdata->hw_arch) ||
 	    ctx->current_codec == V4L2_PIX_FMT_VP8_FRAME) {
-		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx, state);
 		if (src_buf_req)
 			v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
+		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx, state);
 	} else {
-		if (ret != -EAGAIN) {
+		if (ret != -EAGAIN)
 			v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
-			v4l2_m2m_buf_done(vb2_v4l2_src, state);
-		}
 		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
 	}
 }
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c
index bf21f2467a0f..90217cc8e242 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c
@@ -1071,7 +1071,8 @@  static int vdec_av1_slice_setup_lat_from_src_buf(struct vdec_av1_slice_instance
 	if (!src)
 		return -EINVAL;
 
-	lat_buf->src_buf_req = src->vb2_buf.req_obj.req;
+	lat_buf->vb2_v4l2_src = src;
+
 	dst = &lat_buf->ts_info;
 	v4l2_m2m_buf_copy_metadata(src, dst, true);
 	vsi->frame.cur_ts = dst->vb2_buf.timestamp;
@@ -2195,7 +2196,7 @@  static int vdec_av1_slice_core_decode(struct vdec_lat_buf *lat_buf)
 		       &instance->core_vsi->trans.dma_addr_end);
 	vdec_msg_queue_update_ube_rptr(&ctx->msg_queue, instance->core_vsi->trans.dma_addr_end);
 
-	ctx->dev->vdec_pdata->cap_to_disp(ctx, 0, lat_buf->src_buf_req);
+	ctx->dev->vdec_pdata->cap_to_disp(ctx, 0, lat_buf->vb2_v4l2_src);
 
 	return 0;
 
@@ -2204,7 +2205,7 @@  static int vdec_av1_slice_core_decode(struct vdec_lat_buf *lat_buf)
 	vdec_msg_queue_update_ube_rptr(&ctx->msg_queue, pfc->vsi.trans.dma_addr_end);
 
 	if (fb)
-		ctx->dev->vdec_pdata->cap_to_disp(ctx, 1, lat_buf->src_buf_req);
+		ctx->dev->vdec_pdata->cap_to_disp(ctx, 1, lat_buf->vb2_v4l2_src);
 
 	return ret;
 }
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
index 1ed0ccec5665..732d78f63e5a 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
@@ -533,7 +533,7 @@  static int vdec_h264_slice_core_decode(struct vdec_lat_buf *lat_buf)
 
 vdec_dec_end:
 	vdec_msg_queue_update_ube_rptr(&lat_buf->ctx->msg_queue, share_info->trans_end);
-	ctx->dev->vdec_pdata->cap_to_disp(ctx, !!err, lat_buf->src_buf_req);
+	ctx->dev->vdec_pdata->cap_to_disp(ctx, !!err, lat_buf->vb2_v4l2_src);
 	mtk_vdec_debug(ctx, "core decode done err=%d", err);
 	ctx->decoded_frame_cnt++;
 	return 0;
@@ -605,7 +605,7 @@  static int vdec_h264_slice_lat_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
 	}
 
 	inst->vsi->dec.nal_info = buf[nal_start_idx];
-	lat_buf->src_buf_req = src_buf_info->m2m_buf.vb.vb2_buf.req_obj.req;
+	lat_buf->vb2_v4l2_src = &src_buf_info->m2m_buf.vb;
 	v4l2_m2m_buf_copy_metadata(&src_buf_info->m2m_buf.vb, &lat_buf->ts_info, true);
 
 	err = vdec_h264_slice_fill_decode_parameters(inst, share_info);
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_hevc_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_hevc_req_multi_if.c
index aa721cc43647..f6f9f7de0005 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_hevc_req_multi_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_hevc_req_multi_if.c
@@ -741,7 +741,7 @@  static int vdec_hevc_slice_setup_lat_buffer(struct vdec_hevc_slice_inst *inst,
 	inst->vsi->bs.size = bs->size;
 
 	src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
-	lat_buf->src_buf_req = src_buf_info->m2m_buf.vb.vb2_buf.req_obj.req;
+	lat_buf->vb2_v4l2_src = &src_buf_info->m2m_buf.vb;
 	v4l2_m2m_buf_copy_metadata(&src_buf_info->m2m_buf.vb, &lat_buf->ts_info, true);
 
 	*res_chg = inst->resolution_changed;
@@ -961,7 +961,7 @@  static int vdec_hevc_slice_core_decode(struct vdec_lat_buf *lat_buf)
 
 vdec_dec_end:
 	vdec_msg_queue_update_ube_rptr(&lat_buf->ctx->msg_queue, share_info->trans.dma_addr_end);
-	ctx->dev->vdec_pdata->cap_to_disp(ctx, !!err, lat_buf->src_buf_req);
+	ctx->dev->vdec_pdata->cap_to_disp(ctx, !!err, lat_buf->vb2_v4l2_src);
 	mtk_vdec_debug(ctx, "core decode done err=%d", err);
 	ctx->decoded_frame_cnt++;
 	return 0;
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
index eea709d93820..3dceb668ba1c 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
@@ -721,7 +721,7 @@  static int vdec_vp9_slice_setup_lat_from_src_buf(struct vdec_vp9_slice_instance
 	if (!src)
 		return -EINVAL;
 
-	lat_buf->src_buf_req = src->vb2_buf.req_obj.req;
+	lat_buf->vb2_v4l2_src = src;
 
 	dst = &lat_buf->ts_info;
 	v4l2_m2m_buf_copy_metadata(src, dst, true);
@@ -2187,7 +2187,7 @@  static int vdec_vp9_slice_core_decode(struct vdec_lat_buf *lat_buf)
 	mtk_vdec_debug(ctx, "core dma_addr_end 0x%lx\n",
 		       (unsigned long)pfc->vsi.trans.dma_addr_end);
 	vdec_msg_queue_update_ube_rptr(&ctx->msg_queue, pfc->vsi.trans.dma_addr_end);
-	ctx->dev->vdec_pdata->cap_to_disp(ctx, 0, lat_buf->src_buf_req);
+	ctx->dev->vdec_pdata->cap_to_disp(ctx, 0, lat_buf->vb2_v4l2_src);
 
 	return 0;
 
@@ -2197,7 +2197,7 @@  static int vdec_vp9_slice_core_decode(struct vdec_lat_buf *lat_buf)
 		vdec_msg_queue_update_ube_rptr(&ctx->msg_queue, pfc->vsi.trans.dma_addr_end);
 
 		if (fb)
-			ctx->dev->vdec_pdata->cap_to_disp(ctx, 1, lat_buf->src_buf_req);
+			ctx->dev->vdec_pdata->cap_to_disp(ctx, 1, lat_buf->vb2_v4l2_src);
 	}
 	return ret;
 }
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec_msg_queue.h b/drivers/media/platform/mediatek/vcodec/decoder/vdec_msg_queue.h
index b0f576867f4b..9781de35df4b 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec_msg_queue.h
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec_msg_queue.h
@@ -55,7 +55,7 @@  struct vdec_msg_queue_ctx {
  * @rd_mv_addr:	mv addr for av1 lat hardware output, core hardware input
  * @tile_addr:	tile buffer for av1 core input
  * @ts_info: need to set timestamp from output to capture
- * @src_buf_req: output buffer media request object
+ * @vb2_v4l2_src: vb2 buffer of output queue
  *
  * @private_data: shared information used to lat and core hardware
  * @ctx: mtk vcodec context information
@@ -71,7 +71,7 @@  struct vdec_lat_buf {
 	struct mtk_vcodec_mem rd_mv_addr;
 	struct mtk_vcodec_mem tile_addr;
 	struct vb2_v4l2_buffer ts_info;
-	struct media_request *src_buf_req;
+	struct vb2_v4l2_buffer *vb2_v4l2_src;
 
 	void *private_data;
 	struct mtk_vcodec_dec_ctx *ctx;