linux-kernel - [PATCH] x86/hw-breakpoints: eliminate a compiler warning for hw

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Date:	Mon, 29 Dec 2014 14:49:23 +0800
From:	Chen Yucong <slaoub@...il.com>
To:	fweisbec@...il.com
Cc:	linux-kernel@...r.kernel.org, Chen Yucong <slaoub@...il.com>
Subject: [PATCH] x86/hw-breakpoints: eliminate a compiler warning for hw_breakpoint.c

There is a warning message when we compile the linux-next tree.

arch/x86/kernel/hw_breakpoint.c: In function ‘arch_validate_hwbkpt_settings’:
arch/x86/kernel/hw_breakpoint.c:329:20: warning: ‘align’ may be used uninitialized in this function [-Wuninitialized]

This patch aims to eliminate the above compiler warning.

Signed-off-by: Chen Yucong <slaoub@...il.com>
---
 arch/x86/kernel/hw_breakpoint.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
index 7114ba2..302eab3 100644
--- a/arch/x86/kernel/hw_breakpoint.c
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -293,7 +293,7 @@ static int arch_build_bp_info(struct perf_event *bp)
 int arch_validate_hwbkpt_settings(struct perf_event *bp)
 {
 	struct arch_hw_breakpoint *info = counter_arch_bp(bp);
-	unsigned int align;
+	unsigned int align = ~0x0U;
 	int ret;
 
 
-- 
1.7.10.4

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