ARM: dma-mapping: fix build warning in __dma_alloc()

Fix build warning in __dma_alloc() as below:

arch/arm/mm/dma-mapping.c: In function '__dma_alloc':
arch/arm/mm/dma-mapping.c:653:29: warning: 'page' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Jingoo Han <[email protected]>
Signed-off-by: Marek Szyprowski <[email protected]>

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 477a2d23ddf17efb95af55cebbc25d35793a417d..58bc3e4d3bd0a76094d8a2a40c0be9bece4eaf7a 100644 (file)
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -610,7 +610,7 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
                         gfp_t gfp, pgprot_t prot, bool is_coherent, const void *caller)
 {
        u64 mask = get_coherent_dma_mask(dev);
-       struct page *page;
+       struct page *page = NULL;
        void *addr;
 
 #ifdef CONFIG_DMA_API_DEBUG