diff options
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-dma-contig.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-dma-contig.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c index c4e4dfa..4a02ade 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c @@ -98,6 +98,9 @@ static void *vb2_dc_vaddr(void *buf_priv) { struct vb2_dc_buf *buf = buf_priv; + if (!buf->vaddr && buf->db_attach) + buf->vaddr = dma_buf_vmap(buf->db_attach->dmabuf); + return buf->vaddr; } @@ -735,6 +738,7 @@ static int vb2_dc_map_dmabuf(void *mem_priv) buf->dma_addr = sg_dma_address(sgt->sgl); buf->dma_sgt = sgt; + buf->vaddr = NULL; return 0; } @@ -754,6 +758,10 @@ static void vb2_dc_unmap_dmabuf(void *mem_priv) return; } + if (buf->vaddr) { + dma_buf_vunmap(buf->db_attach->dmabuf, buf->vaddr); + buf->vaddr = NULL; + } dma_buf_unmap_attachment(buf->db_attach, sgt, buf->dma_dir); buf->dma_addr = 0; |
