[PATCH] [PATCH v2] mm: initialize 'seq' in gup_fast to remove -Wmaybe-uninitialized warning

[Alexey Suchkov <aleks.koyf@gmail.com>]

The local variable 'seq' in gup_fast (mm/gup.c) was declared
without initialization, which can trigger:

mm/gup.c:3165:20: warning: ‘seq’ may be used uninitialized [-Wmaybe-uninitialized]

Initialize 'seq' to 0. This does not change behavior, since
read_seqcount_retry() always writes to it before use.

Changes since v1:
- Removes the accidental formatting from v1.

Signed-off-by: Alexey Suchkov <dywoq.contact@gmail.com>
---
 mm/gup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/gup.c b/mm/gup.c
index 8e7dc2c6e..879798de5 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -3131,7 +3131,7 @@ static unsigned long gup_fast(unsigned long start, unsigned long end,
 {
 	unsigned long flags;
 	int nr_pinned = 0;
-	unsigned seq;
+	unsigned int seq = 0;
 
 	if (!IS_ENABLED(CONFIG_HAVE_GUP_FAST) ||
 	    !gup_fast_permitted(start, end))
-- 
2.53.0