From 90a2f4fc5b23b06720554850be7e47845cdcb60f Mon Sep 17 00:00:00 2001 From: Xie Yongji Date: Fri, 21 Jan 2022 16:39:39 +0800 Subject: [PATCH] vduse: Fix returning wrong type in vduse_domain_alloc_iova() [ Upstream commit b9d102dafec6af1c07b610faf0a6d4e8aee14ae0 ] This fixes the following smatch warnings: drivers/vdpa/vdpa_user/iova_domain.c:305 vduse_domain_alloc_iova() warn: should 'iova_pfn << shift' be a 64 bit type? Fixes: 8c773d53fb7b ("vduse: Implement an MMU-based software IOTLB") Reported-by: kernel test robot Reported-by: Dan Carpenter Signed-off-by: Xie Yongji Link: https://lore.kernel.org/r/20220121083940.102-1-xieyongji@bytedance.com Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang Signed-off-by: Sasha Levin --- drivers/vdpa/vdpa_user/iova_domain.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vdpa/vdpa_user/iova_domain.c b/drivers/vdpa/vdpa_user/iova_domain.c index 1daae26..0678c25 100644 --- a/drivers/vdpa/vdpa_user/iova_domain.c +++ b/drivers/vdpa/vdpa_user/iova_domain.c @@ -302,7 +302,7 @@ vduse_domain_alloc_iova(struct iova_domain *iovad, iova_len = roundup_pow_of_two(iova_len); iova_pfn = alloc_iova_fast(iovad, iova_len, limit >> shift, true); - return iova_pfn << shift; + return (dma_addr_t)iova_pfn << shift; } static void vduse_domain_free_iova(struct iova_domain *iovad, -- 2.7.4