staging: gasket: fix data page unmap DMA direction

The DMA direction supplied to dma_unmap_page should match the
corresponding dma_map_page call, which is mapped bi-directional.

Signed-off-by: Nick Ewalt <nicholasewalt@google.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c
index e86bdc5..8fe27e7 100644 (file)
--- a/drivers/staging/gasket/gasket_page_table.c
+++ b/drivers/staging/gasket/gasket_page_table.c
@@ -612,7 +612,7 @@ static void gasket_perform_unmapping(struct gasket_page_table *pg_tbl,
                if (ptes[i].status == PTE_INUSE) {
                        if (ptes[i].dma_addr) {
                                dma_unmap_page(pg_tbl->device, ptes[i].dma_addr,
-                                              PAGE_SIZE, DMA_FROM_DEVICE);
+                                              PAGE_SIZE, DMA_BIDIRECTIONAL);
                        }
                        if (gasket_release_page(ptes[i].page))
                                --pg_tbl->num_active_pages;