Re: [PATCH v4 13/21] media: videobuf2: Prepare to dynamic dma-buf locking specification

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Am 31.08.22 um 17:37 schrieb Dmitry Osipenko:
Prepare V4L2 memory allocators to the common dynamic dma-buf locking
convention by starting to use the unlocked versions of dma-buf API
functions.

Acked-by: Tomasz Figa <tfiga@xxxxxxxxxxxx>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>

Acked-by: Christian König <christian.koenig@xxxxxxx>

---
  drivers/media/common/videobuf2/videobuf2-dma-contig.c | 11 ++++++-----
  drivers/media/common/videobuf2/videobuf2-dma-sg.c     |  8 ++++----
  drivers/media/common/videobuf2/videobuf2-vmalloc.c    |  6 +++---
  3 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
index 678b359717c4..79f4d8301fbb 100644
--- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
@@ -101,7 +101,7 @@ static void *vb2_dc_vaddr(struct vb2_buffer *vb, void *buf_priv)
  	if (buf->db_attach) {
  		struct iosys_map map;
- if (!dma_buf_vmap(buf->db_attach->dmabuf, &map))
+		if (!dma_buf_vmap_unlocked(buf->db_attach->dmabuf, &map))
  			buf->vaddr = map.vaddr;
return buf->vaddr;
@@ -711,7 +711,7 @@ static int vb2_dc_map_dmabuf(void *mem_priv)
  	}
/* get the associated scatterlist for this buffer */
-	sgt = dma_buf_map_attachment(buf->db_attach, buf->dma_dir);
+	sgt = dma_buf_map_attachment_unlocked(buf->db_attach, buf->dma_dir);
  	if (IS_ERR(sgt)) {
  		pr_err("Error getting dmabuf scatterlist\n");
  		return -EINVAL;
@@ -722,7 +722,8 @@ static int vb2_dc_map_dmabuf(void *mem_priv)
  	if (contig_size < buf->size) {
  		pr_err("contiguous chunk is too small %lu/%lu\n",
  		       contig_size, buf->size);
-		dma_buf_unmap_attachment(buf->db_attach, sgt, buf->dma_dir);
+		dma_buf_unmap_attachment_unlocked(buf->db_attach, sgt,
+						  buf->dma_dir);
  		return -EFAULT;
  	}
@@ -750,10 +751,10 @@ static void vb2_dc_unmap_dmabuf(void *mem_priv)
  	}
if (buf->vaddr) {
-		dma_buf_vunmap(buf->db_attach->dmabuf, &map);
+		dma_buf_vunmap_unlocked(buf->db_attach->dmabuf, &map);
  		buf->vaddr = NULL;
  	}
-	dma_buf_unmap_attachment(buf->db_attach, sgt, buf->dma_dir);
+	dma_buf_unmap_attachment_unlocked(buf->db_attach, sgt, buf->dma_dir);
buf->dma_addr = 0;
  	buf->dma_sgt = NULL;
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
index fa69158a65b1..36ecdea8d707 100644
--- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
@@ -309,7 +309,7 @@ static void *vb2_dma_sg_vaddr(struct vb2_buffer *vb, void *buf_priv)
if (!buf->vaddr) {
  		if (buf->db_attach) {
-			ret = dma_buf_vmap(buf->db_attach->dmabuf, &map);
+			ret = dma_buf_vmap_unlocked(buf->db_attach->dmabuf, &map);
  			buf->vaddr = ret ? NULL : map.vaddr;
  		} else {
  			buf->vaddr = vm_map_ram(buf->pages, buf->num_pages, -1);
@@ -565,7 +565,7 @@ static int vb2_dma_sg_map_dmabuf(void *mem_priv)
  	}
/* get the associated scatterlist for this buffer */
-	sgt = dma_buf_map_attachment(buf->db_attach, buf->dma_dir);
+	sgt = dma_buf_map_attachment_unlocked(buf->db_attach, buf->dma_dir);
  	if (IS_ERR(sgt)) {
  		pr_err("Error getting dmabuf scatterlist\n");
  		return -EINVAL;
@@ -594,10 +594,10 @@ static void vb2_dma_sg_unmap_dmabuf(void *mem_priv)
  	}
if (buf->vaddr) {
-		dma_buf_vunmap(buf->db_attach->dmabuf, &map);
+		dma_buf_vunmap_unlocked(buf->db_attach->dmabuf, &map);
  		buf->vaddr = NULL;
  	}
-	dma_buf_unmap_attachment(buf->db_attach, sgt, buf->dma_dir);
+	dma_buf_unmap_attachment_unlocked(buf->db_attach, sgt, buf->dma_dir);
buf->dma_sgt = NULL;
  }
diff --git a/drivers/media/common/videobuf2/videobuf2-vmalloc.c b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
index 948152f1596b..7831bf545874 100644
--- a/drivers/media/common/videobuf2/videobuf2-vmalloc.c
+++ b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
@@ -376,7 +376,7 @@ static int vb2_vmalloc_map_dmabuf(void *mem_priv)
  	struct iosys_map map;
  	int ret;
- ret = dma_buf_vmap(buf->dbuf, &map);
+	ret = dma_buf_vmap_unlocked(buf->dbuf, &map);
  	if (ret)
  		return -EFAULT;
  	buf->vaddr = map.vaddr;
@@ -389,7 +389,7 @@ static void vb2_vmalloc_unmap_dmabuf(void *mem_priv)
  	struct vb2_vmalloc_buf *buf = mem_priv;
  	struct iosys_map map = IOSYS_MAP_INIT_VADDR(buf->vaddr);
- dma_buf_vunmap(buf->dbuf, &map);
+	dma_buf_vunmap_unlocked(buf->dbuf, &map);
  	buf->vaddr = NULL;
  }
@@ -399,7 +399,7 @@ static void vb2_vmalloc_detach_dmabuf(void *mem_priv)
  	struct iosys_map map = IOSYS_MAP_INIT_VADDR(buf->vaddr);
if (buf->vaddr)
-		dma_buf_vunmap(buf->dbuf, &map);
+		dma_buf_vunmap_unlocked(buf->dbuf, &map);
kfree(buf);
  }




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