X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=mm%2Fdmapool.c;h=312a716fa14c2ef0d2780832bc378c05a3d08d16;hb=a4c4c49a611321d1b10379f72f1267802437fc07;hp=71a8998cd03a6b8b0d2dbfe36a24ce70766047e8;hpb=dc847d5b4aa852c41b56c21bdc759fee13cc8f68;p=firefly-linux-kernel-4.4.55.git

diff --git a/mm/dmapool.c b/mm/dmapool.c
index 71a8998cd03a..312a716fa14c 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -394,7 +394,7 @@ static struct dma_page *pool_find_page(struct dma_pool *pool, dma_addr_t dma)
 	list_for_each_entry(page, &pool->page_list, page_list) {
 		if (dma < page->dma)
 			continue;
-		if (dma < (page->dma + pool->allocation))
+		if ((dma - page->dma) < pool->allocation)
 			return page;
 	}
 	return NULL;