dma-buf: add dma_data_direction to unmap dma_buf_op

Some exporters may use DMA map/unmap APIs in dma-buf ops, which require
enum dma_data_direction for both map and unmap operations.

Thus, the unmap dma_buf_op also needs to have enum dma_data_direction as
a parameter.

Reported-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Sumit Semwal <sumit.semwal@ti.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index 86f624141048..a885b2689b8f 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -63,7 +63,8 @@ struct dma_buf_ops {
         struct sg_table * (*map_dma_buf)(struct dma_buf_attachment *,
                                                 enum dma_data_direction);
         void (*unmap_dma_buf)(struct dma_buf_attachment *,
-                                                struct sg_table *);
+                                                struct sg_table *,
+                                                enum dma_data_direction);
         /* TODO: Add try_map_dma_buf version, to return immed with -EBUSY
          * if the call would block.
          */
@@ -122,7 +123,8 @@ void dma_buf_put(struct dma_buf *dmabuf);
 
 struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *,
                                         enum dma_data_direction);
-void dma_buf_unmap_attachment(struct dma_buf_attachment *, struct sg_table *);
+void dma_buf_unmap_attachment(struct dma_buf_attachment *, struct sg_table *,
+                                enum dma_data_direction);
 #else
 
 static inline struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf,
@@ -166,7 +168,7 @@ static inline struct sg_table *dma_buf_map_attachment(
 }
 
 static inline void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
-                                                struct sg_table *sg)
+                        struct sg_table *sg, enum dma_data_direction dir)
 {
         return;
 }