[PATCH 00/10] Correct return type for mem2mem buffer helpers

[PATCH 00/10] Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

As the subject says, we want to fix the return type
of these mem2mem buffer helpers. They are currently returning
a void pointer, which prevents type checking.

The patchset turned out to be much bigger than I was expecting,
so it's splitted in per-driver patches.

It'd be awesome if driver maintainers can take review
the changes.

Thanks!

Ezequiel Garcia (10):
  mtk-jpeg: Correct return type for mem2mem buffer helpers
  mtk-mdp: Correct return type for mem2mem buffer helpers
  mtk-vcodec: Correct return type for mem2mem buffer helpers
  mx2_emmaprp: Correct return type for mem2mem buffer helpers
  rockchip/rga: Correct return type for mem2mem buffer helpers
  s5p-g2d: Correct return type for mem2mem buffer helpers
  s5p-jpeg: Correct return type for mem2mem buffer helpers
  sh_veu: Correct return type for mem2mem buffer helpers
  rockchip/vpu: Correct return type for mem2mem buffer helpers
  media: v4l2-mem2mem: Correct return type for mem2mem buffer helpers

 .../media/platform/mtk-jpeg/mtk_jpeg_core.c   | 40 +++++------
 drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c  | 20 ++----
 .../platform/mtk-vcodec/mtk_vcodec_dec.c      | 62 +++++++---------
 .../platform/mtk-vcodec/mtk_vcodec_enc.c      | 72 ++++++++-----------
 drivers/media/platform/mx2_emmaprp.c          |  6 +-
 drivers/media/platform/rockchip/rga/rga.c     |  6 +-
 drivers/media/platform/s5p-g2d/g2d.c          |  6 +-
 drivers/media/platform/s5p-jpeg/jpeg-core.c   | 38 +++++-----
 drivers/media/platform/sh_veu.c               |  4 +-
 drivers/media/v4l2-core/v4l2-mem2mem.c        |  6 +-
 .../rockchip/vpu/rk3288_vpu_hw_jpeg_enc.c     |  6 +-
 .../rockchip/vpu/rk3399_vpu_hw_jpeg_enc.c     |  6 +-
 include/media/v4l2-mem2mem.h                  | 18 ++---
 13 files changed, 129 insertions(+), 161 deletions(-)

-- 
2.20.1

[PATCH 01/10] mtk-jpeg: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 .../media/platform/mtk-jpeg/mtk_jpeg_core.c   | 40 +++++++++----------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
index 2a5d5002c27e..f761e4d8bf2a 100644
--- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
@@ -702,7 +702,7 @@ static void mtk_jpeg_buf_queue(struct vb2_buffer *vb)
 	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, to_vb2_v4l2_buffer(vb));
 }
 
-static void *mtk_jpeg_buf_remove(struct mtk_jpeg_ctx *ctx,
+static struct vb2_v4l2_buffer *mtk_jpeg_buf_remove(struct mtk_jpeg_ctx *ctx,
 				 enum v4l2_buf_type type)
 {
 	if (V4L2_TYPE_IS_OUTPUT(type))
@@ -714,7 +714,7 @@ static void *mtk_jpeg_buf_remove(struct mtk_jpeg_ctx *ctx,
 static int mtk_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
 {
 	struct mtk_jpeg_ctx *ctx = vb2_get_drv_priv(q);
-	struct vb2_buffer *vb;
+	struct vb2_v4l2_buffer *vb;
 	int ret = 0;
 
 	ret = pm_runtime_get_sync(ctx->jpeg->dev);
@@ -724,14 +724,14 @@ static int mtk_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
 	return 0;
 err:
 	while ((vb = mtk_jpeg_buf_remove(ctx, q->type)))
-		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(vb), VB2_BUF_STATE_QUEUED);
+		v4l2_m2m_buf_done(vb, VB2_BUF_STATE_QUEUED);
 	return ret;
 }
 
 static void mtk_jpeg_stop_streaming(struct vb2_queue *q)
 {
 	struct mtk_jpeg_ctx *ctx = vb2_get_drv_priv(q);
-	struct vb2_buffer *vb;
+	struct vb2_v4l2_buffer *vb;
 
 	/*
 	 * STREAMOFF is an acknowledgment for source change event.
@@ -743,7 +743,7 @@ static void mtk_jpeg_stop_streaming(struct vb2_queue *q)
 		struct mtk_jpeg_src_buf *src_buf;
 
 		vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
-		src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
+		src_buf = mtk_jpeg_vb2_to_srcbuf(&vb->vb2_buf);
 		mtk_jpeg_set_queue_data(ctx, &src_buf->dec_param);
 		ctx->state = MTK_JPEG_RUNNING;
 	} else if (V4L2_TYPE_IS_OUTPUT(q->type)) {
@@ -751,7 +751,7 @@ static void mtk_jpeg_stop_streaming(struct vb2_queue *q)
 	}
 
 	while ((vb = mtk_jpeg_buf_remove(ctx, q->type)))
-		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(vb), VB2_BUF_STATE_ERROR);
+		v4l2_m2m_buf_done(vb, VB2_BUF_STATE_ERROR);
 
 	pm_runtime_put_sync(ctx->jpeg->dev);
 }
@@ -807,7 +807,7 @@ static void mtk_jpeg_device_run(void *priv)
 {
 	struct mtk_jpeg_ctx *ctx = priv;
 	struct mtk_jpeg_dev *jpeg = ctx->jpeg;
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR;
 	unsigned long flags;
 	struct mtk_jpeg_src_buf *jpeg_src_buf;
@@ -817,11 +817,11 @@ static void mtk_jpeg_device_run(void *priv)
 
 	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
-	jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(src_buf);
+	jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(&src_buf->vb2_buf);
 
 	if (jpeg_src_buf->flags & MTK_JPEG_BUF_FLAGS_LAST_FRAME) {
-		for (i = 0; i < dst_buf->num_planes; i++)
-			vb2_set_plane_payload(dst_buf, i, 0);
+		for (i = 0; i < dst_buf->vb2_buf.num_planes; i++)
+			vb2_set_plane_payload(&dst_buf->vb2_buf, i, 0);
 		buf_state = VB2_BUF_STATE_DONE;
 		goto dec_end;
 	}
@@ -833,8 +833,8 @@ static void mtk_jpeg_device_run(void *priv)
 		return;
 	}
 
-	mtk_jpeg_set_dec_src(ctx, src_buf, &bs);
-	if (mtk_jpeg_set_dec_dst(ctx, &jpeg_src_buf->dec_param, dst_buf, &fb))
+	mtk_jpeg_set_dec_src(ctx, &src_buf->vb2_buf, &bs);
+	if (mtk_jpeg_set_dec_dst(ctx, &jpeg_src_buf->dec_param, &dst_buf->vb2_buf, &fb))
 		goto dec_end;
 
 	spin_lock_irqsave(&jpeg->hw_lock, flags);
@@ -849,8 +849,8 @@ static void mtk_jpeg_device_run(void *priv)
 dec_end:
 	v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 	v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
-	v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf), buf_state);
-	v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf), buf_state);
+	v4l2_m2m_buf_done(src_buf, buf_state);
+	v4l2_m2m_buf_done(dst_buf, buf_state);
 	v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
 }
 
@@ -921,7 +921,7 @@ static irqreturn_t mtk_jpeg_dec_irq(int irq, void *priv)
 {
 	struct mtk_jpeg_dev *jpeg = priv;
 	struct mtk_jpeg_ctx *ctx;
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	struct mtk_jpeg_src_buf *jpeg_src_buf;
 	enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR;
 	u32	dec_irq_ret;
@@ -938,7 +938,7 @@ static irqreturn_t mtk_jpeg_dec_irq(int irq, void *priv)
 
 	src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 	dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
-	jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(src_buf);
+	jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(&src_buf->vb2_buf);
 
 	if (dec_irq_ret >= MTK_JPEG_DEC_RESULT_UNDERFLOW)
 		mtk_jpeg_dec_reset(jpeg->dec_reg_base);
@@ -948,15 +948,15 @@ static irqreturn_t mtk_jpeg_dec_irq(int irq, void *priv)
 		goto dec_end;
 	}
 
-	for (i = 0; i < dst_buf->num_planes; i++)
-		vb2_set_plane_payload(dst_buf, i,
+	for (i = 0; i < dst_buf->vb2_buf.num_planes; i++)
+		vb2_set_plane_payload(&dst_buf->vb2_buf, i,
 				      jpeg_src_buf->dec_param.comp_size[i]);
 
 	buf_state = VB2_BUF_STATE_DONE;
 
 dec_end:
-	v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf), buf_state);
-	v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf), buf_state);
+	v4l2_m2m_buf_done(src_buf, buf_state);
+	v4l2_m2m_buf_done(dst_buf, buf_state);
 	v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
 	return IRQ_HANDLED;
 }
-- 
2.20.1

[PATCH 02/10] mtk-mdp: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
index 51a13466261e..7d15c06e9db9 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
@@ -473,20 +473,17 @@ static void mtk_mdp_prepare_addr(struct mtk_mdp_ctx *ctx,
 static void mtk_mdp_m2m_get_bufs(struct mtk_mdp_ctx *ctx)
 {
 	struct mtk_mdp_frame *s_frame, *d_frame;
-	struct vb2_buffer *src_vb, *dst_vb;
 	struct vb2_v4l2_buffer *src_vbuf, *dst_vbuf;
 
 	s_frame = &ctx->s_frame;
 	d_frame = &ctx->d_frame;
 
-	src_vb = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
-	mtk_mdp_prepare_addr(ctx, src_vb, s_frame, &s_frame->addr);
+	src_vbuf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+	mtk_mdp_prepare_addr(ctx, &src_vbuf->vb2_buf, s_frame, &s_frame->addr);
 
-	dst_vb = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
-	mtk_mdp_prepare_addr(ctx, dst_vb, d_frame, &d_frame->addr);
+	dst_vbuf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+	mtk_mdp_prepare_addr(ctx, &dst_vbuf->vb2_buf, d_frame, &d_frame->addr);
 
-	src_vbuf = to_vb2_v4l2_buffer(src_vb);
-	dst_vbuf = to_vb2_v4l2_buffer(dst_vb);
 	dst_vbuf->vb2_buf.timestamp = src_vbuf->vb2_buf.timestamp;
 }
 
@@ -494,17 +491,14 @@ static void mtk_mdp_process_done(void *priv, int vb_state)
 {
 	struct mtk_mdp_dev *mdp = priv;
 	struct mtk_mdp_ctx *ctx;
-	struct vb2_buffer *src_vb, *dst_vb;
-	struct vb2_v4l2_buffer *src_vbuf = NULL, *dst_vbuf = NULL;
+	struct vb2_v4l2_buffer *src_vbuf, *dst_vbuf;
 
 	ctx = v4l2_m2m_get_curr_priv(mdp->m2m_dev);
 	if (!ctx)
 		return;
 
-	src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
-	src_vbuf = to_vb2_v4l2_buffer(src_vb);
-	dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
-	dst_vbuf = to_vb2_v4l2_buffer(dst_vb);
+	src_vbuf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+	dst_vbuf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
 
 	dst_vbuf->vb2_buf.timestamp = src_vbuf->vb2_buf.timestamp;
 	dst_vbuf->timecode = src_vbuf->timecode;
-- 
2.20.1

[PATCH 03/10] mtk-vcodec: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 .../platform/mtk-vcodec/mtk_vcodec_dec.c      | 62 +++++++---------
 .../platform/mtk-vcodec/mtk_vcodec_enc.c      | 72 ++++++++-----------
 2 files changed, 54 insertions(+), 80 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
index ba619647bc10..2a36f0ce6974 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
@@ -325,13 +325,12 @@ static void mtk_vdec_worker(struct work_struct *work)
 	struct mtk_vcodec_ctx *ctx = container_of(work, struct mtk_vcodec_ctx,
 				decode_work);
 	struct mtk_vcodec_dev *dev = ctx->dev;
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	struct mtk_vcodec_mem buf;
 	struct vdec_fb *pfb;
 	bool res_chg = false;
 	int ret;
 	struct mtk_video_dec_buf *dst_buf_info, *src_buf_info;
-	struct vb2_v4l2_buffer *dst_vb2_v4l2, *src_vb2_v4l2;
 
 	src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
 	if (src_buf == NULL) {
@@ -347,26 +346,23 @@ static void mtk_vdec_worker(struct work_struct *work)
 		return;
 	}
 
-	src_vb2_v4l2 = container_of(src_buf, struct vb2_v4l2_buffer, vb2_buf);
-	src_buf_info = container_of(src_vb2_v4l2, struct mtk_video_dec_buf, vb);
-
-	dst_vb2_v4l2 = container_of(dst_buf, struct vb2_v4l2_buffer, vb2_buf);
-	dst_buf_info = container_of(dst_vb2_v4l2, struct mtk_video_dec_buf, vb);
+	src_buf_info = container_of(src_buf, struct mtk_video_dec_buf, vb);
+	dst_buf_info = container_of(dst_buf, struct mtk_video_dec_buf, vb);
 
 	pfb = &dst_buf_info->frame_buffer;
-	pfb->base_y.va = vb2_plane_vaddr(dst_buf, 0);
-	pfb->base_y.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+	pfb->base_y.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
+	pfb->base_y.dma_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
 	pfb->base_y.size = ctx->picinfo.y_bs_sz + ctx->picinfo.y_len_sz;
 
-	pfb->base_c.va = vb2_plane_vaddr(dst_buf, 1);
-	pfb->base_c.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 1);
+	pfb->base_c.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 1);
+	pfb->base_c.dma_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 1);
 	pfb->base_c.size = ctx->picinfo.c_bs_sz + ctx->picinfo.c_len_sz;
 	pfb->status = 0;
 	mtk_v4l2_debug(3, "===>[%d] vdec_if_decode() ===>", ctx->id);
 
 	mtk_v4l2_debug(3,
 			"id=%d Framebuf  pfb=%p VA=%p Y_DMA=%pad C_DMA=%pad Size=%zx",
-			dst_buf->index, pfb,
+			dst_buf->vb2_buf.index, pfb,
 			pfb->base_y.va, &pfb->base_y.dma_addr,
 			&pfb->base_c.dma_addr, pfb->base_y.size);
 
@@ -384,19 +380,19 @@ static void mtk_vdec_worker(struct work_struct *work)
 		clean_display_buffer(ctx);
 		vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 0, 0);
 		vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 1, 0);
-		dst_vb2_v4l2->flags |= V4L2_BUF_FLAG_LAST;
+		dst_buf->flags |= V4L2_BUF_FLAG_LAST;
 		v4l2_m2m_buf_done(&dst_buf_info->vb, VB2_BUF_STATE_DONE);
 		clean_free_buffer(ctx);
 		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
 		return;
 	}
-	buf.va = vb2_plane_vaddr(src_buf, 0);
-	buf.dma_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+	buf.va = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
+	buf.dma_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
 	buf.size = (size_t)src_buf->planes[0].bytesused;
 	if (!buf.va) {
 		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
 		mtk_v4l2_err("[%d] id=%d src_addr is NULL!!",
-				ctx->id, src_buf->index);
+				ctx->id, src_buf->vb2_buf.index);
 		return;
 	}
 	mtk_v4l2_debug(3, "[%d] Bitstream VA=%p DMA=%pad Size=%zx vb=%p",
@@ -416,10 +412,10 @@ static void mtk_vdec_worker(struct work_struct *work)
 		mtk_v4l2_err(
 			" <===[%d], src_buf[%d] sz=0x%zx pts=%llu dst_buf[%d] vdec_if_decode() ret=%d res_chg=%d===>",
 			ctx->id,
-			src_buf->index,
+			src_buf->vb2_buf.index,
 			buf.size,
 			src_buf_info->vb.vb2_buf.timestamp,
-			dst_buf->index,
+			dst_buf->vb2_buf.index,
 			ret, res_chg);
 		src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
 		if (ret == -EIO) {
@@ -1103,7 +1099,7 @@ static int vb2ops_vdec_buf_prepare(struct vb2_buffer *vb)
 
 static void vb2ops_vdec_buf_queue(struct vb2_buffer *vb)
 {
-	struct vb2_buffer *src_buf;
+	struct vb2_v4l2_buffer *src_buf;
 	struct mtk_vcodec_mem src_mem;
 	bool res_chg = false;
 	int ret = 0;
@@ -1149,8 +1145,7 @@ static void vb2ops_vdec_buf_queue(struct vb2_buffer *vb)
 		mtk_v4l2_err("No src buffer");
 		return;
 	}
-	vb2_v4l2 = to_vb2_v4l2_buffer(src_buf);
-	buf = container_of(vb2_v4l2, struct mtk_video_dec_buf, vb);
+	buf = container_of(src_buf, struct mtk_video_dec_buf, vb);
 	if (buf->lastframe) {
 		/* This shouldn't happen. Just in case. */
 		mtk_v4l2_err("Invalid flush buffer.");
@@ -1158,8 +1153,8 @@ static void vb2ops_vdec_buf_queue(struct vb2_buffer *vb)
 		return;
 	}
 
-	src_mem.va = vb2_plane_vaddr(src_buf, 0);
-	src_mem.dma_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+	src_mem.va = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
+	src_mem.dma_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
 	src_mem.size = (size_t)src_buf->planes[0].bytesused;
 	mtk_v4l2_debug(2,
 			"[%d] buf id=%d va=%p dma=%pad size=%zx",
@@ -1181,11 +1176,9 @@ static void vb2ops_vdec_buf_queue(struct vb2_buffer *vb)
 			mtk_v4l2_err("[%d] Unrecoverable error in vdec_if_decode.",
 					ctx->id);
 			ctx->state = MTK_STATE_ABORT;
-			v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf),
-						VB2_BUF_STATE_ERROR);
+			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
 		} else {
-			v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf),
-						VB2_BUF_STATE_DONE);
+			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
 		}
 		mtk_v4l2_debug(ret ? 0 : 1,
 			       "[%d] vdec_if_decode() src_buf=%d, size=%zu, fail=%d, res_chg=%d",
@@ -1281,7 +1274,7 @@ static int vb2ops_vdec_start_streaming(struct vb2_queue *q, unsigned int count)
 
 static void vb2ops_vdec_stop_streaming(struct vb2_queue *q)
 {
-	struct vb2_buffer *src_buf = NULL, *dst_buf = NULL;
+	struct vb2_v4l2_buffer *src_buf = NULL, *dst_buf = NULL;
 	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(q);
 
 	mtk_v4l2_debug(3, "[%d] (%d) state=(%x) ctx->decoded_frame_cnt=%d",
@@ -1289,12 +1282,10 @@ static void vb2ops_vdec_stop_streaming(struct vb2_queue *q)
 
 	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
 		while ((src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx))) {
-			struct vb2_v4l2_buffer *vb2_v4l2 =
-					to_vb2_v4l2_buffer(src_buf);
 			struct mtk_video_dec_buf *buf_info = container_of(
-					vb2_v4l2, struct mtk_video_dec_buf, vb);
+					src_buf, struct mtk_video_dec_buf, vb);
 			if (!buf_info->lastframe)
-				v4l2_m2m_buf_done(vb2_v4l2,
+				v4l2_m2m_buf_done(src_buf,
 						VB2_BUF_STATE_ERROR);
 		}
 		return;
@@ -1323,10 +1314,9 @@ static void vb2ops_vdec_stop_streaming(struct vb2_queue *q)
 	ctx->state = MTK_STATE_FLUSH;
 
 	while ((dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx))) {
-		vb2_set_plane_payload(dst_buf, 0, 0);
-		vb2_set_plane_payload(dst_buf, 1, 0);
-		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf),
-					VB2_BUF_STATE_ERROR);
+		vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
+		vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
+		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
 	}
 
 }
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
index d1f12257bf66..c627202fcffd 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
@@ -887,7 +887,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
 static void vb2ops_venc_stop_streaming(struct vb2_queue *q)
 {
 	struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(q);
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	int ret;
 
 	mtk_v4l2_debug(2, "[%d]-> type=%d", ctx->id, q->type);
@@ -895,13 +895,11 @@ static void vb2ops_venc_stop_streaming(struct vb2_queue *q)
 	if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 		while ((dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx))) {
 			dst_buf->planes[0].bytesused = 0;
-			v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf),
-					VB2_BUF_STATE_ERROR);
+			v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
 		}
 	} else {
 		while ((src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx)))
-			v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf),
-					VB2_BUF_STATE_ERROR);
+			v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
 	}
 
 	if ((q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
@@ -937,8 +935,7 @@ static int mtk_venc_encode_header(void *priv)
 {
 	struct mtk_vcodec_ctx *ctx = priv;
 	int ret;
-	struct vb2_buffer *src_buf, *dst_buf;
-	struct vb2_v4l2_buffer *dst_vb2_v4l2, *src_vb2_v4l2;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	struct mtk_vcodec_mem bs_buf;
 	struct venc_done_result enc_result;
 
@@ -948,14 +945,14 @@ static int mtk_venc_encode_header(void *priv)
 		return -EINVAL;
 	}
 
-	bs_buf.va = vb2_plane_vaddr(dst_buf, 0);
-	bs_buf.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+	bs_buf.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
+	bs_buf.dma_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
 	bs_buf.size = (size_t)dst_buf->planes[0].length;
 
 	mtk_v4l2_debug(1,
 			"[%d] buf id=%d va=0x%p dma_addr=0x%llx size=%zu",
 			ctx->id,
-			dst_buf->index, bs_buf.va,
+			dst_buf->vb2_buf.index, bs_buf.va,
 			(u64)bs_buf.dma_addr,
 			bs_buf.size);
 
@@ -964,26 +961,23 @@ static int mtk_venc_encode_header(void *priv)
 			NULL, &bs_buf, &enc_result);
 
 	if (ret) {
-		dst_buf->planes[0].bytesused = 0;
+		dst_buf->vb2_buf.planes[0].bytesused = 0;
 		ctx->state = MTK_STATE_ABORT;
-		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf),
-				  VB2_BUF_STATE_ERROR);
+		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
 		mtk_v4l2_err("venc_if_encode failed=%d", ret);
 		return -EINVAL;
 	}
 	src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
 	if (src_buf) {
-		src_vb2_v4l2 = to_vb2_v4l2_buffer(src_buf);
-		dst_vb2_v4l2 = to_vb2_v4l2_buffer(dst_buf);
-		dst_buf->timestamp = src_buf->timestamp;
-		dst_vb2_v4l2->timecode = src_vb2_v4l2->timecode;
+		dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
+		dst_buf->timecode = src_buf->timecode;
 	} else {
 		mtk_v4l2_err("No timestamp for the header buffer.");
 	}
 
 	ctx->state = MTK_STATE_HEADER;
 	dst_buf->planes[0].bytesused = enc_result.bs_size;
-	v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf), VB2_BUF_STATE_DONE);
+	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
 
 	return 0;
 }
@@ -991,9 +985,7 @@ static int mtk_venc_encode_header(void *priv)
 static int mtk_venc_param_change(struct mtk_vcodec_ctx *ctx)
 {
 	struct venc_enc_param enc_prm;
-	struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
-	struct vb2_v4l2_buffer *vb2_v4l2 =
-			container_of(vb, struct vb2_v4l2_buffer, vb2_buf);
+	struct vb2_v4l2_buffer *vb2_v4l2 = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
 	struct mtk_video_enc_buf *mtk_buf =
 			container_of(vb2_v4l2, struct mtk_video_enc_buf, vb);
 
@@ -1067,12 +1059,11 @@ static void mtk_venc_worker(struct work_struct *work)
 {
 	struct mtk_vcodec_ctx *ctx = container_of(work, struct mtk_vcodec_ctx,
 				    encode_work);
-	struct vb2_buffer *src_buf, *dst_buf;
+	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;
 	int ret, i;
-	struct vb2_v4l2_buffer *dst_vb2_v4l2, *src_vb2_v4l2;
 
 	/* check dst_buf, dst_buf may be removed in device_run
 	 * to stored encdoe header so we need check dst_buf and
@@ -1086,15 +1077,15 @@ static void mtk_venc_worker(struct work_struct *work)
 
 	src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
 	memset(&frm_buf, 0, sizeof(frm_buf));
-	for (i = 0; i < src_buf->num_planes ; i++) {
+	for (i = 0; i < src_buf->vb2_buf.num_planes ; i++) {
 		frm_buf.fb_addr[i].dma_addr =
-				vb2_dma_contig_plane_dma_addr(src_buf, i);
+				vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, i);
 		frm_buf.fb_addr[i].size =
-				(size_t)src_buf->planes[i].length;
+				(size_t)src_buf->vb2_buf.planes[i].length;
 	}
-	bs_buf.va = vb2_plane_vaddr(dst_buf, 0);
-	bs_buf.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
-	bs_buf.size = (size_t)dst_buf->planes[0].length;
+	bs_buf.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
+	bs_buf.dma_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
+	bs_buf.size = (size_t)dst_buf->vb2_buf.planes[0].length;
 
 	mtk_v4l2_debug(2,
 			"Framebuf PA=%llx Size=0x%zx;PA=0x%llx Size=0x%zx;PA=0x%llx Size=%zu",
@@ -1108,28 +1099,21 @@ static void mtk_venc_worker(struct work_struct *work)
 	ret = venc_if_encode(ctx, VENC_START_OPT_ENCODE_FRAME,
 			     &frm_buf, &bs_buf, &enc_result);
 
-	src_vb2_v4l2 = to_vb2_v4l2_buffer(src_buf);
-	dst_vb2_v4l2 = to_vb2_v4l2_buffer(dst_buf);
-
-	dst_buf->timestamp = src_buf->timestamp;
-	dst_vb2_v4l2->timecode = src_vb2_v4l2->timecode;
+	dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
+	dst_buf->timecode = src_buf->timecode;
 
 	if (enc_result.is_key_frm)
-		dst_vb2_v4l2->flags |= V4L2_BUF_FLAG_KEYFRAME;
+		dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
 
 	if (ret) {
-		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf),
-				  VB2_BUF_STATE_ERROR);
+		v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
 		dst_buf->planes[0].bytesused = 0;
-		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf),
-				  VB2_BUF_STATE_ERROR);
+		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
 		mtk_v4l2_err("venc_if_encode failed=%d", ret);
 	} else {
-		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf),
-				  VB2_BUF_STATE_DONE);
+		v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
 		dst_buf->planes[0].bytesused = enc_result.bs_size;
-		v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf),
-				  VB2_BUF_STATE_DONE);
+		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
 		mtk_v4l2_debug(2, "venc_if_encode bs size=%d",
 				 enc_result.bs_size);
 	}
@@ -1137,7 +1121,7 @@ static void mtk_venc_worker(struct work_struct *work)
 	v4l2_m2m_job_finish(ctx->dev->m2m_dev_enc, ctx->m2m_ctx);
 
 	mtk_v4l2_debug(1, "<=== src_buf[%d] dst_buf[%d] venc_if_encode ret=%d Size=%u===>",
-			src_buf->index, dst_buf->index, ret,
+			src_buf->vb2_buf.index, dst_buf->vb2_buf.index, ret,
 			enc_result.bs_size);
 }
 
-- 
2.20.1

[PATCH 04/10] mx2_emmaprp: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/media/platform/mx2_emmaprp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/mx2_emmaprp.c b/drivers/media/platform/mx2_emmaprp.c
index 27b078cf98e3..f60f499c596b 100644
--- a/drivers/media/platform/mx2_emmaprp.c
+++ b/drivers/media/platform/mx2_emmaprp.c
@@ -274,7 +274,7 @@ static void emmaprp_device_run(void *priv)
 {
 	struct emmaprp_ctx *ctx = priv;
 	struct emmaprp_q_data *s_q_data, *d_q_data;
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	struct emmaprp_dev *pcdev = ctx->dev;
 	unsigned int s_width, s_height;
 	unsigned int d_width, d_height;
@@ -294,8 +294,8 @@ static void emmaprp_device_run(void *priv)
 	d_height = d_q_data->height;
 	d_size = d_width * d_height;
 
-	p_in = vb2_dma_contig_plane_dma_addr(src_buf, 0);
-	p_out = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+	p_in = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
+	p_out = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
 	if (!p_in || !p_out) {
 		v4l2_err(&pcdev->v4l2_dev,
 			 "Acquiring kernel pointers to buffers failed\n");
-- 
2.20.1

[PATCH 05/10] rockchip/rga: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/media/platform/rockchip/rga/rga.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/rockchip/rga/rga.c b/drivers/media/platform/rockchip/rga/rga.c
index 5c653287185f..b096227a9722 100644
--- a/drivers/media/platform/rockchip/rga/rga.c
+++ b/drivers/media/platform/rockchip/rga/rga.c
@@ -43,7 +43,7 @@ static void device_run(void *prv)
 {
 	struct rga_ctx *ctx = prv;
 	struct rockchip_rga *rga = ctx->rga;
-	struct vb2_buffer *src, *dst;
+	struct vb2_v4l2_buffer *src, *dst;
 	unsigned long flags;
 
 	spin_lock_irqsave(&rga->ctrl_lock, flags);
@@ -53,8 +53,8 @@ static void device_run(void *prv)
 	src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 
-	rga_buf_map(src);
-	rga_buf_map(dst);
+	rga_buf_map(&src->vb2_buf);
+	rga_buf_map(&dst->vb2_buf);
 
 	rga_hw_start(rga);
 
-- 
2.20.1

[PATCH 06/10] s5p-g2d: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/media/platform/s5p-g2d/g2d.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/s5p-g2d/g2d.c b/drivers/media/platform/s5p-g2d/g2d.c
index 57ab1d1085d1..971c47165010 100644
--- a/drivers/media/platform/s5p-g2d/g2d.c
+++ b/drivers/media/platform/s5p-g2d/g2d.c
@@ -513,7 +513,7 @@ static void device_run(void *prv)
 {
 	struct g2d_ctx *ctx = prv;
 	struct g2d_dev *dev = ctx->dev;
-	struct vb2_buffer *src, *dst;
+	struct vb2_v4l2_buffer *src, *dst;
 	unsigned long flags;
 	u32 cmd = 0;
 
@@ -528,10 +528,10 @@ static void device_run(void *prv)
 	spin_lock_irqsave(&dev->ctrl_lock, flags);
 
 	g2d_set_src_size(dev, &ctx->in);
-	g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
+	g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(&src->vb2_buf, 0));
 
 	g2d_set_dst_size(dev, &ctx->out);
-	g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
+	g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(&dst->vb2_buf, 0));
 
 	g2d_set_rop4(dev, ctx->rop);
 	g2d_set_flip(dev, ctx->flip);
-- 
2.20.1

[PATCH 07/10] s5p-jpeg: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/media/platform/s5p-jpeg/jpeg-core.c | 38 ++++++++++-----------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index 0a23b2d19e14..8cc730eccb6c 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -793,14 +793,14 @@ static void skip(struct s5p_jpeg_buffer *buf, long len);
 static void exynos4_jpeg_parse_decode_h_tbl(struct s5p_jpeg_ctx *ctx)
 {
 	struct s5p_jpeg *jpeg = ctx->jpeg;
-	struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+	struct vb2_v4l2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	struct s5p_jpeg_buffer jpeg_buffer;
 	unsigned int word;
 	int c, x, components;
 
 	jpeg_buffer.size = 2; /* Ls */
 	jpeg_buffer.data =
-		(unsigned long)vb2_plane_vaddr(vb, 0) + ctx->out_q.sos + 2;
+		(unsigned long)vb2_plane_vaddr(&vb->vb2_buf, 0) + ctx->out_q.sos + 2;
 	jpeg_buffer.curr = 0;
 
 	word = 0;
@@ -830,14 +830,14 @@ static void exynos4_jpeg_parse_decode_h_tbl(struct s5p_jpeg_ctx *ctx)
 static void exynos4_jpeg_parse_huff_tbl(struct s5p_jpeg_ctx *ctx)
 {
 	struct s5p_jpeg *jpeg = ctx->jpeg;
-	struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+	struct vb2_v4l2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	struct s5p_jpeg_buffer jpeg_buffer;
 	unsigned int word;
 	int c, i, n, j;
 
 	for (j = 0; j < ctx->out_q.dht.n; ++j) {
 		jpeg_buffer.size = ctx->out_q.dht.len[j];
-		jpeg_buffer.data = (unsigned long)vb2_plane_vaddr(vb, 0) +
+		jpeg_buffer.data = (unsigned long)vb2_plane_vaddr(&vb->vb2_buf, 0) +
 				   ctx->out_q.dht.marker[j];
 		jpeg_buffer.curr = 0;
 
@@ -889,13 +889,13 @@ static void exynos4_jpeg_parse_huff_tbl(struct s5p_jpeg_ctx *ctx)
 static void exynos4_jpeg_parse_decode_q_tbl(struct s5p_jpeg_ctx *ctx)
 {
 	struct s5p_jpeg *jpeg = ctx->jpeg;
-	struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+	struct vb2_v4l2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	struct s5p_jpeg_buffer jpeg_buffer;
 	int c, x, components;
 
 	jpeg_buffer.size = ctx->out_q.sof_len;
 	jpeg_buffer.data =
-		(unsigned long)vb2_plane_vaddr(vb, 0) + ctx->out_q.sof;
+		(unsigned long)vb2_plane_vaddr(&vb->vb2_buf, 0) + ctx->out_q.sof;
 	jpeg_buffer.curr = 0;
 
 	skip(&jpeg_buffer, 5); /* P, Y, X */
@@ -920,14 +920,14 @@ static void exynos4_jpeg_parse_decode_q_tbl(struct s5p_jpeg_ctx *ctx)
 static void exynos4_jpeg_parse_q_tbl(struct s5p_jpeg_ctx *ctx)
 {
 	struct s5p_jpeg *jpeg = ctx->jpeg;
-	struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+	struct vb2_v4l2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	struct s5p_jpeg_buffer jpeg_buffer;
 	unsigned int word;
 	int c, i, j;
 
 	for (j = 0; j < ctx->out_q.dqt.n; ++j) {
 		jpeg_buffer.size = ctx->out_q.dqt.len[j];
-		jpeg_buffer.data = (unsigned long)vb2_plane_vaddr(vb, 0) +
+		jpeg_buffer.data = (unsigned long)vb2_plane_vaddr(&vb->vb2_buf, 0) +
 				   ctx->out_q.dqt.marker[j];
 		jpeg_buffer.curr = 0;
 
@@ -2075,15 +2075,15 @@ static void s5p_jpeg_device_run(void *priv)
 {
 	struct s5p_jpeg_ctx *ctx = priv;
 	struct s5p_jpeg *jpeg = ctx->jpeg;
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	unsigned long src_addr, dst_addr, flags;
 
 	spin_lock_irqsave(&ctx->jpeg->slock, flags);
 
 	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
-	src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
-	dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+	src_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
+	dst_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
 
 	s5p_jpeg_reset(jpeg->regs);
 	s5p_jpeg_poweron(jpeg->regs);
@@ -2156,7 +2156,7 @@ static void exynos4_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
 {
 	struct s5p_jpeg *jpeg = ctx->jpeg;
 	struct s5p_jpeg_fmt *fmt;
-	struct vb2_buffer *vb;
+	struct vb2_v4l2_buffer *vb;
 	struct s5p_jpeg_addr jpeg_addr = {};
 	u32 pix_size, padding_bytes = 0;
 
@@ -2175,7 +2175,7 @@ static void exynos4_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
 		vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 	}
 
-	jpeg_addr.y = vb2_dma_contig_plane_dma_addr(vb, 0);
+	jpeg_addr.y = vb2_dma_contig_plane_dma_addr(&vb->vb2_buf, 0);
 
 	if (fmt->colplanes == 2) {
 		jpeg_addr.cb = jpeg_addr.y + pix_size - padding_bytes;
@@ -2193,7 +2193,7 @@ static void exynos4_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
 static void exynos4_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
 {
 	struct s5p_jpeg *jpeg = ctx->jpeg;
-	struct vb2_buffer *vb;
+	struct vb2_v4l2_buffer *vb;
 	unsigned int jpeg_addr = 0;
 
 	if (ctx->mode == S5P_JPEG_ENCODE)
@@ -2201,7 +2201,7 @@ static void exynos4_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
 	else
 		vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 
-	jpeg_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+	jpeg_addr = vb2_dma_contig_plane_dma_addr(&vb->vb2_buf, 0);
 	if (jpeg->variant->version == SJPEG_EXYNOS5433 &&
 	    ctx->mode == S5P_JPEG_DECODE)
 		jpeg_addr += ctx->out_q.sos;
@@ -2317,7 +2317,7 @@ static void exynos3250_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
 {
 	struct s5p_jpeg *jpeg = ctx->jpeg;
 	struct s5p_jpeg_fmt *fmt;
-	struct vb2_buffer *vb;
+	struct vb2_v4l2_buffer *vb;
 	struct s5p_jpeg_addr jpeg_addr = {};
 	u32 pix_size;
 
@@ -2331,7 +2331,7 @@ static void exynos3250_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
 		fmt = ctx->cap_q.fmt;
 	}
 
-	jpeg_addr.y = vb2_dma_contig_plane_dma_addr(vb, 0);
+	jpeg_addr.y = vb2_dma_contig_plane_dma_addr(&vb->vb2_buf, 0);
 
 	if (fmt->colplanes == 2) {
 		jpeg_addr.cb = jpeg_addr.y + pix_size;
@@ -2349,7 +2349,7 @@ static void exynos3250_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
 static void exynos3250_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
 {
 	struct s5p_jpeg *jpeg = ctx->jpeg;
-	struct vb2_buffer *vb;
+	struct vb2_v4l2_buffer *vb;
 	unsigned int jpeg_addr = 0;
 
 	if (ctx->mode == S5P_JPEG_ENCODE)
@@ -2357,7 +2357,7 @@ static void exynos3250_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
 	else
 		vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 
-	jpeg_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+	jpeg_addr = vb2_dma_contig_plane_dma_addr(&vb->vb2_buf, 0);
 	exynos3250_jpeg_jpgadr(jpeg->regs, jpeg_addr);
 }
 
-- 
2.20.1

[PATCH 08/10] sh_veu: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/media/platform/sh_veu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/sh_veu.c b/drivers/media/platform/sh_veu.c
index 09ae64a0004c..d277cc674349 100644
--- a/drivers/media/platform/sh_veu.c
+++ b/drivers/media/platform/sh_veu.c
@@ -273,13 +273,13 @@ static void sh_veu_process(struct sh_veu_dev *veu,
 static void sh_veu_device_run(void *priv)
 {
 	struct sh_veu_dev *veu = priv;
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 
 	src_buf = v4l2_m2m_next_src_buf(veu->m2m_ctx);
 	dst_buf = v4l2_m2m_next_dst_buf(veu->m2m_ctx);
 
 	if (src_buf && dst_buf)
-		sh_veu_process(veu, src_buf, dst_buf);
+		sh_veu_process(veu, &src_buf->vb2_buf, &dst_buf->vb2_buf);
 }
 
 		/* ========== video ioctls ========== */
-- 
2.20.1

[PATCH 09/10] rockchip/vpu: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

Fix the assigned type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.

Fixing this is necessary to fix the mem2mem buffer handling API,
changing the return to the correct struct vb2_v4l2_buffer instead
of a void pointer.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/staging/media/rockchip/vpu/rk3288_vpu_hw_jpeg_enc.c | 6 +++---
 drivers/staging/media/rockchip/vpu/rk3399_vpu_hw_jpeg_enc.c | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/media/rockchip/vpu/rk3288_vpu_hw_jpeg_enc.c b/drivers/staging/media/rockchip/vpu/rk3288_vpu_hw_jpeg_enc.c
index 5282236d1bb1..06daea66fb49 100644
--- a/drivers/staging/media/rockchip/vpu/rk3288_vpu_hw_jpeg_enc.c
+++ b/drivers/staging/media/rockchip/vpu/rk3288_vpu_hw_jpeg_enc.c
@@ -80,7 +80,7 @@ rk3288_vpu_jpeg_enc_set_qtable(struct rockchip_vpu_dev *vpu,
 void rk3288_vpu_jpeg_enc_run(struct rockchip_vpu_ctx *ctx)
 {
 	struct rockchip_vpu_dev *vpu = ctx->dev;
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	struct rockchip_vpu_jpeg_ctx jpeg_ctx;
 	u32 reg;
 
@@ -88,7 +88,7 @@ void rk3288_vpu_jpeg_enc_run(struct rockchip_vpu_ctx *ctx)
 	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 
 	memset(&jpeg_ctx, 0, sizeof(jpeg_ctx));
-	jpeg_ctx.buffer = vb2_plane_vaddr(dst_buf, 0);
+	jpeg_ctx.buffer = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
 	jpeg_ctx.width = ctx->dst_fmt.width;
 	jpeg_ctx.height = ctx->dst_fmt.height;
 	jpeg_ctx.quality = ctx->jpeg_quality;
@@ -99,7 +99,7 @@ void rk3288_vpu_jpeg_enc_run(struct rockchip_vpu_ctx *ctx)
 			   VEPU_REG_ENC_CTRL);
 
 	rk3288_vpu_set_src_img_ctrl(vpu, ctx);
-	rk3288_vpu_jpeg_enc_set_buffers(vpu, ctx, src_buf);
+	rk3288_vpu_jpeg_enc_set_buffers(vpu, ctx, &src_buf->vb2_buf);
 	rk3288_vpu_jpeg_enc_set_qtable(vpu,
 				       rockchip_vpu_jpeg_get_qtable(&jpeg_ctx, 0),
 				       rockchip_vpu_jpeg_get_qtable(&jpeg_ctx, 1));
diff --git a/drivers/staging/media/rockchip/vpu/rk3399_vpu_hw_jpeg_enc.c b/drivers/staging/media/rockchip/vpu/rk3399_vpu_hw_jpeg_enc.c
index dbc86d95fe3b..3d438797692e 100644
--- a/drivers/staging/media/rockchip/vpu/rk3399_vpu_hw_jpeg_enc.c
+++ b/drivers/staging/media/rockchip/vpu/rk3399_vpu_hw_jpeg_enc.c
@@ -111,7 +111,7 @@ rk3399_vpu_jpeg_enc_set_qtable(struct rockchip_vpu_dev *vpu,
 void rk3399_vpu_jpeg_enc_run(struct rockchip_vpu_ctx *ctx)
 {
 	struct rockchip_vpu_dev *vpu = ctx->dev;
-	struct vb2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
 	struct rockchip_vpu_jpeg_ctx jpeg_ctx;
 	u32 reg;
 
@@ -119,7 +119,7 @@ void rk3399_vpu_jpeg_enc_run(struct rockchip_vpu_ctx *ctx)
 	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 
 	memset(&jpeg_ctx, 0, sizeof(jpeg_ctx));
-	jpeg_ctx.buffer = vb2_plane_vaddr(dst_buf, 0);
+	jpeg_ctx.buffer = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
 	jpeg_ctx.width = ctx->dst_fmt.width;
 	jpeg_ctx.height = ctx->dst_fmt.height;
 	jpeg_ctx.quality = ctx->jpeg_quality;
@@ -130,7 +130,7 @@ void rk3399_vpu_jpeg_enc_run(struct rockchip_vpu_ctx *ctx)
 			   VEPU_REG_ENCODE_START);
 
 	rk3399_vpu_set_src_img_ctrl(vpu, ctx);
-	rk3399_vpu_jpeg_enc_set_buffers(vpu, ctx, src_buf);
+	rk3399_vpu_jpeg_enc_set_buffers(vpu, ctx, &src_buf->vb2_buf);
 	rk3399_vpu_jpeg_enc_set_qtable(vpu,
 				       rockchip_vpu_jpeg_get_qtable(&jpeg_ctx, 0),
 				       rockchip_vpu_jpeg_get_qtable(&jpeg_ctx, 1));
-- 
2.20.1

[PATCH 10/10] media: v4l2-mem2mem: Correct return type for mem2mem buffer helpers

[Ezequiel Garcia]

This commit changes the return type of mem2mem buffer handling API.
Namely, these functions:

 v4l2_m2m_next_buf
 v4l2_m2m_last_buf
 v4l2_m2m_buf_remove
 v4l2_m2m_next_src_buf
 v4l2_m2m_next_dst_buf
 v4l2_m2m_last_src_buf
 v4l2_m2m_last_dst_buf
 v4l2_m2m_src_buf_remove
 v4l2_m2m_dst_buf_remove

which currently return void pointer.

In every case, the actual return type is a struct vb2_v4l2_buffer
pointer. Change the return type of the listed functions,
so type checking can be properly used.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 drivers/media/v4l2-core/v4l2-mem2mem.c |  6 +++---
 include/media/v4l2-mem2mem.h           | 18 +++++++++---------
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index 1494d0d5951a..18fd80c96083 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -131,7 +131,7 @@ struct vb2_queue *v4l2_m2m_get_vq(struct v4l2_m2m_ctx *m2m_ctx,
 }
 EXPORT_SYMBOL(v4l2_m2m_get_vq);
 
-void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx)
+struct vb2_v4l2_buffer *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx)
 {
 	struct v4l2_m2m_buffer *b;
 	unsigned long flags;
@@ -149,7 +149,7 @@ void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx)
 }
 EXPORT_SYMBOL_GPL(v4l2_m2m_next_buf);
 
-void *v4l2_m2m_last_buf(struct v4l2_m2m_queue_ctx *q_ctx)
+struct vb2_v4l2_buffer *v4l2_m2m_last_buf(struct v4l2_m2m_queue_ctx *q_ctx)
 {
 	struct v4l2_m2m_buffer *b;
 	unsigned long flags;
@@ -167,7 +167,7 @@ void *v4l2_m2m_last_buf(struct v4l2_m2m_queue_ctx *q_ctx)
 }
 EXPORT_SYMBOL_GPL(v4l2_m2m_last_buf);
 
-void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx)
+struct vb2_v4l2_buffer *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx)
 {
 	struct v4l2_m2m_buffer *b;
 	unsigned long flags;
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h
index 47c6d9aa0bf4..7344bef0cdba 100644
--- a/include/media/v4l2-mem2mem.h
+++ b/include/media/v4l2-mem2mem.h
@@ -425,7 +425,7 @@ unsigned int v4l2_m2m_num_dst_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx)
  *
  * @q_ctx: pointer to struct @v4l2_m2m_queue_ctx
  */
-void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx);
+struct vb2_v4l2_buffer *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx);
 
 /**
  * v4l2_m2m_next_src_buf() - return next source buffer from the list of ready
@@ -433,7 +433,7 @@ void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx);
  *
  * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
  */
-static inline void *v4l2_m2m_next_src_buf(struct v4l2_m2m_ctx *m2m_ctx)
+static inline struct vb2_v4l2_buffer *v4l2_m2m_next_src_buf(struct v4l2_m2m_ctx *m2m_ctx)
 {
 	return v4l2_m2m_next_buf(&m2m_ctx->out_q_ctx);
 }
@@ -444,7 +444,7 @@ static inline void *v4l2_m2m_next_src_buf(struct v4l2_m2m_ctx *m2m_ctx)
  *
  * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
  */
-static inline void *v4l2_m2m_next_dst_buf(struct v4l2_m2m_ctx *m2m_ctx)
+static inline struct vb2_v4l2_buffer *v4l2_m2m_next_dst_buf(struct v4l2_m2m_ctx *m2m_ctx)
 {
 	return v4l2_m2m_next_buf(&m2m_ctx->cap_q_ctx);
 }
@@ -454,7 +454,7 @@ static inline void *v4l2_m2m_next_dst_buf(struct v4l2_m2m_ctx *m2m_ctx)
  *
  * @q_ctx: pointer to struct @v4l2_m2m_queue_ctx
  */
-void *v4l2_m2m_last_buf(struct v4l2_m2m_queue_ctx *q_ctx);
+struct vb2_v4l2_buffer *v4l2_m2m_last_buf(struct v4l2_m2m_queue_ctx *q_ctx);
 
 /**
  * v4l2_m2m_last_src_buf() - return last destination buffer from the list of
@@ -462,7 +462,7 @@ void *v4l2_m2m_last_buf(struct v4l2_m2m_queue_ctx *q_ctx);
  *
  * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
  */
-static inline void *v4l2_m2m_last_src_buf(struct v4l2_m2m_ctx *m2m_ctx)
+static inline struct vb2_v4l2_buffer *v4l2_m2m_last_src_buf(struct v4l2_m2m_ctx *m2m_ctx)
 {
 	return v4l2_m2m_last_buf(&m2m_ctx->out_q_ctx);
 }
@@ -473,7 +473,7 @@ static inline void *v4l2_m2m_last_src_buf(struct v4l2_m2m_ctx *m2m_ctx)
  *
  * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
  */
-static inline void *v4l2_m2m_last_dst_buf(struct v4l2_m2m_ctx *m2m_ctx)
+static inline struct vb2_v4l2_buffer *v4l2_m2m_last_dst_buf(struct v4l2_m2m_ctx *m2m_ctx)
 {
 	return v4l2_m2m_last_buf(&m2m_ctx->cap_q_ctx);
 }
@@ -547,7 +547,7 @@ struct vb2_queue *v4l2_m2m_get_dst_vq(struct v4l2_m2m_ctx *m2m_ctx)
  *
  * @q_ctx: pointer to struct @v4l2_m2m_queue_ctx
  */
-void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx);
+struct vb2_v4l2_buffer *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx);
 
 /**
  * v4l2_m2m_src_buf_remove() - take off a source buffer from the list of ready
@@ -555,7 +555,7 @@ void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx);
  *
  * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
  */
-static inline void *v4l2_m2m_src_buf_remove(struct v4l2_m2m_ctx *m2m_ctx)
+static inline struct vb2_v4l2_buffer *v4l2_m2m_src_buf_remove(struct v4l2_m2m_ctx *m2m_ctx)
 {
 	return v4l2_m2m_buf_remove(&m2m_ctx->out_q_ctx);
 }
@@ -566,7 +566,7 @@ static inline void *v4l2_m2m_src_buf_remove(struct v4l2_m2m_ctx *m2m_ctx)
  *
  * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
  */
-static inline void *v4l2_m2m_dst_buf_remove(struct v4l2_m2m_ctx *m2m_ctx)
+static inline struct vb2_v4l2_buffer *v4l2_m2m_dst_buf_remove(struct v4l2_m2m_ctx *m2m_ctx)
 {
 	return v4l2_m2m_buf_remove(&m2m_ctx->cap_q_ctx);
 }
-- 
2.20.1