linux-kernel - [PATCH linux-next] x86/mm: Fix compile warning in remove

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Date:	Tue, 05 Feb 2013 19:52:16 -0700
From:	Shuah Khan <shuah.khan@...com>
To:	Andrew Morton <akpm@...ux-foundation.org>, tglx@...utronix.de,
	hpa@...or.com, mingo@...hat.com, yinghai@...nel.org,
	tangchen@...fujitsu.com, wency@...fujitsu.com
Cc:	LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
	shuahkhan@...il.com
Subject: [PATCH linux-next] x86/mm: Fix compile warning in remove_pagetable()

Fix the following compile warning in remove_pagetable():
arch/x86/mm/init_64.c: In function ‘remove_pagetable’:
arch/x86/mm/init_64.c:996:9: warning: ‘next’ may be used uninitialized in this function [-Wuninitialized]


Signed-off-by: Shuah Khan <shuah.khan@...com>
---
 arch/x86/mm/init_64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 67bad4b..ed78400 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -987,7 +987,7 @@ remove_pud_table(pud_t *pud_start, unsigned long addr, unsigned long end,
 static void __meminit
 remove_pagetable(unsigned long start, unsigned long end, bool direct)
 {
-	unsigned long next;
+	unsigned long next = pgd_addr_end(start, end);
 	pgd_t *pgd;
 	pud_t *pud;
 	bool pgd_changed = false;
-- 
1.7.9.5



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