[PATCH v3 2/3] udmabuf: use sgtable-based scatterlist wrappers

[Marek Szyprowski]

Use common wrappers operating directly on the struct sg_table objects to
fix incorrect use of scatterlists sync calls. dma_sync_sg_for_*()
functions have to be called with the number of elements originally passed
to dma_map_sg_*() function, not the one returned in sgtable's nents.

Fixes: 1ffe09590121 ("udmabuf: fix dma-buf cpu access")
CC: sta...@vger.kernel.org
Signed-off-by: Marek Szyprowski <m.szyprow...@samsung.com>
Acked-by: Vivek Kasireddy <vivek.kasire...@intel.com>
---
 drivers/dma-buf/udmabuf.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
index 7eee3eb47a8e..c9d0c68d2fcb 100644
--- a/drivers/dma-buf/udmabuf.c
+++ b/drivers/dma-buf/udmabuf.c
@@ -264,8 +264,7 @@ static int begin_cpu_udmabuf(struct dma_buf *buf,
                        ubuf->sg = NULL;
                }
        } else {
-               dma_sync_sg_for_cpu(dev, ubuf->sg->sgl, ubuf->sg->nents,
-                                   direction);
+               dma_sync_sgtable_for_cpu(dev, ubuf->sg, direction);
        }
 
        return ret;
@@ -280,7 +279,7 @@ static int end_cpu_udmabuf(struct dma_buf *buf,
        if (!ubuf->sg)
                return -EINVAL;
 
-       dma_sync_sg_for_device(dev, ubuf->sg->sgl, ubuf->sg->nents, direction);
+       dma_sync_sgtable_for_device(dev, ubuf->sg, direction);
        return 0;
 }
 
-- 
2.34.1