6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
commit 608ca5a60ee47b48fec210aeb7a795a64eb5dcee upstream.
For dmabuf import users to be able to use the vaddr from another
videobuf2-dma-sg source, the exporter needs to set a proper vaddr on
vb2_dma_sg_dmabuf_ops_vmap callback. This patch adds vmap on map if
buf->vaddr was not set.
Cc: stable@xxxxxxxxxx
Fixes: 7938f4218168 ("dma-buf-map: Rename to iosys-map")
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
Acked-by: Tomasz Figa <tfiga@xxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/common/videobuf2/videobuf2-dma-sg.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
@@ -487,9 +487,15 @@ vb2_dma_sg_dmabuf_ops_end_cpu_access(str
static int vb2_dma_sg_dmabuf_ops_vmap(struct dma_buf *dbuf,
struct iosys_map *map)
{
- struct vb2_dma_sg_buf *buf = dbuf->priv;
+ struct vb2_dma_sg_buf *buf;
+ void *vaddr;
- iosys_map_set_vaddr(map, buf->vaddr);
+ buf = dbuf->priv;
+ vaddr = vb2_dma_sg_vaddr(buf->vb, buf);
+ if (!vaddr)
+ return -EINVAL;
+
+ iosys_map_set_vaddr(map, vaddr);
return 0;
}
