[PATCH] mm/hmm: fix uninitialized use of 'entry' in hmm_vma_walk_pmd()

[jglisse@redhat.com]

From: Ralph Campbell <rcampbell@nvidia.com>

The variable 'entry' is used before being initialized in
hmm_vma_walk_pmd()

Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
---
 mm/hmm.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/hmm.c b/mm/hmm.c
index ea19742a5d60..979211c7ccc8 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -418,7 +418,7 @@ static int hmm_vma_walk_pmd(pmd_t *pmdp,
 		}
 
 		if (!pte_present(pte)) {
-			swp_entry_t entry;
+			swp_entry_t entry = pte_to_swp_entry(pte);
 
 			if (!non_swap_entry(entry)) {
 				if (hmm_vma_walk->fault)
@@ -426,8 +426,6 @@ static int hmm_vma_walk_pmd(pmd_t *pmdp,
 				continue;
 			}
 
-			entry = pte_to_swp_entry(pte);
-
 			/*
 			 * This is a special swap entry, ignore migration, use
 			 * device and report anything else as error.
-- 
2.14.3