linux-kernel - [PATCH] vfio/type1: Fix build warning

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Message-ID: <20160531192729.16701.55684.stgit@gimli.home>
Date:	Tue, 31 May 2016 13:28:54 -0600
From:	Alex Williamson <alex.williamson@...hat.com>
To:	kvm@...r.kernel.org
Cc:	alex.williamson@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH] vfio/type1: Fix build warning

This function cannot actually be called with npage = 0, so in practice
this doesn't return an uninitialized value.

Signed-off-by: Alex Williamson <alex.williamson@...hat.com>
---
 drivers/vfio/vfio_iommu_type1.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 15a6582..2ba1942 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -515,7 +515,7 @@ static int map_try_harder(struct vfio_domain *domain, dma_addr_t iova,
 			  unsigned long pfn, long npage, int prot)
 {
 	long i;
-	int ret;
+	int ret = 0;
 
 	for (i = 0; i < npage; i++, pfn++, iova += PAGE_SIZE) {
 		ret = iommu_map(domain->domain, iova,