Merge branch 'mlog_replace_for_39' of git://repo.or.cz/taoma-kernel into ocfs2-merge-window-fix

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index c47bbe11b804..93ca08b8a451 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -686,8 +686,10 @@ dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
         /*
          * Ensure that the address returned is DMA'ble
          */
-        if (!dma_capable(dev, dev_addr, size))
-                panic("map_single: bounce buffer is not DMA'ble");
+        if (!dma_capable(dev, dev_addr, size)) {
+                swiotlb_tbl_unmap_single(dev, map, size, dir);
+                dev_addr = swiotlb_virt_to_bus(dev, io_tlb_overflow_buffer);
+        }
 
         return dev_addr;
 }