diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 97e0ea90e7de..75cbcc5672e6 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -25,6 +25,7 @@ struct udmabuf { pgoff_t pagecount; struct page **pages; struct sg_table *sg; + enum dma_data_direction sg_dir; struct miscdevice *device; }; @@ -111,7 +112,7 @@ static void release_udmabuf(struct dma_buf *buf) pgoff_t pg; if (ubuf->sg) - put_sg_table(dev, ubuf->sg, DMA_BIDIRECTIONAL); + put_sg_table(dev, ubuf->sg, ubuf->sg_dir); for (pg = 0; pg < ubuf->pagecount; pg++) put_page(ubuf->pages[pg]); @@ -131,6 +132,8 @@ static int begin_cpu_udmabuf(struct dma_buf *buf, if (IS_ERR(ubuf->sg)) { ret = PTR_ERR(ubuf->sg); ubuf->sg = NULL; + } else { + ubuf->sg_dir = direction; } } else { dma_sync_sgtable_for_cpu(dev, ubuf->sg, direction);