swiotlb: fix a typo

"overwirte" isn't a word. It should be "overwrite".

Signed-off-by: Chao Gao <chao.gao@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 1ce8977..0ef6b12 100644 (file)
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -764,7 +764,7 @@ phys_addr_t swiotlb_tbl_map_single(struct device *dev, phys_addr_t orig_addr,
        /*
         * When dir == DMA_FROM_DEVICE we could omit the copy from the orig
         * to the tlb buffer, if we knew for sure the device will
-        * overwirte the entire current content. But we don't. Thus
+        * overwrite the entire current content. But we don't. Thus
         * unconditional bounce may prevent leaking swiotlb content (i.e.
         * kernel memory) to user-space.
         */