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udmabuf: actually unmap the scatterlist
author
Lucas Stach
<l.stach@pengutronix.de>
Tue, 4 Jun 2019 20:23:31 +0000
(22:23 +0200)
committer
Gerd Hoffmann
<kraxel@redhat.com>
Wed, 5 Jun 2019 08:41:17 +0000
(10:41 +0200)
unmap_udmabuf fails to actually unmap the scatterlist, leaving dangling
mappings around.
Fixes:
fbb0de795078
("Add udmabuf misc device")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Link:
http://patchwork.freedesktop.org/patch/msgid/20190604202331.17482-1-l.stach@pengutronix.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
drivers/dma-buf/udmabuf.c
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diff --git
a/drivers/dma-buf/udmabuf.c
b/drivers/dma-buf/udmabuf.c
index
cd57747
..
9635897
100644
(file)
--- a/
drivers/dma-buf/udmabuf.c
+++ b/
drivers/dma-buf/udmabuf.c
@@
-77,6
+77,7
@@
static void unmap_udmabuf(struct dma_buf_attachment *at,
struct sg_table *sg,
enum dma_data_direction direction)
{
+ dma_unmap_sg(at->dev, sg->sgl, sg->nents, direction);
sg_free_table(sg);
kfree(sg);
}