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media: videobuf2-dma-sg: fix vmap callback 

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@kernel.org
Fixes: 7938f42181 ("dma-buf-map: Rename to iosys-map")
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Acked-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Grzeschik 2023-11-23 23:32:05 +01:00 committed by Greg Kroah-Hartman
parent c160f2ac85
commit d78fac87c6
1 changed files with 8 additions and 2 deletions
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10
drivers/media/common/videobuf2/videobuf2-dma-sg.c
View File

@ -494,9 +494,15 @@ vb2_dma_sg_dmabuf_ops_end_cpu_access(struct dma_buf *dbuf,
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;
}