[media] videobuf2: Add support for file access mode flags for DMABUF exporting

[karo-tx-linux.git] / drivers / media / v4l2-core / videobuf2-core.c

diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index b19b306c8f7f533d3112db441f692e57bd76638d..57ba131f08ad9f19d899870f8d7ecf8998170f8a 100644 (file)
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -1824,8 +1824,8 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
                return -EINVAL;
        }
 
-       if (eb->flags & ~O_CLOEXEC) {
-               dprintk(1, "Queue does support only O_CLOEXEC flag\n");
+       if (eb->flags & ~(O_CLOEXEC | O_ACCMODE)) {
+               dprintk(1, "Queue does support only O_CLOEXEC and access mode flags\n");
                return -EINVAL;
        }
 
@@ -1848,14 +1848,14 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
 
        vb_plane = &vb->planes[eb->plane];
 
-       dbuf = call_memop(q, get_dmabuf, vb_plane->mem_priv);
+       dbuf = call_memop(q, get_dmabuf, vb_plane->mem_priv, eb->flags & O_ACCMODE);
        if (IS_ERR_OR_NULL(dbuf)) {
                dprintk(1, "Failed to export buffer %d, plane %d\n",
                        eb->index, eb->plane);
                return -EINVAL;
        }
 
-       ret = dma_buf_fd(dbuf, eb->flags);
+       ret = dma_buf_fd(dbuf, eb->flags & ~O_ACCMODE);
        if (ret < 0) {
                dprintk(3, "buffer %d, plane %d failed to export (%d)\n",
                        eb->index, eb->plane, ret);