linux-kernel - [PATCH 1/1] XEN: enlighten, use uninitialized

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Date:	Tue, 25 Aug 2009 23:00:44 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	jeremy@...source.com
Cc:	chrisw@...s-sol.org, virtualization@...ts.osdl.org,
	xen-devel@...ts.xensource.com, linux-kernel@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>
Subject: [PATCH 1/1] XEN: enlighten, use uninitialized_var(cx)

To avoid a wrong compiler warning, use unitialized_var(cx) in
xen_init_cpuid_mask.

cx needn't be initialized for cpuid when ax is 1.

Signed-off-by: Jiri Slaby <jirislaby@...il.com>
Cc: Jeremy Fitzhardinge <jeremy@...source.com>
Cc: Chris Wright <chrisw@...s-sol.org>
---
 arch/x86/xen/enlighten.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index e90540a..5ab75e2 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -202,7 +202,7 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
 
 static __init void xen_init_cpuid_mask(void)
 {
-	unsigned int ax, bx, cx, dx;
+	unsigned int ax, bx, uninitialized_var(cx), dx;
 
 	cpuid_leaf1_edx_mask =
 		~((1 << X86_FEATURE_MCE)  |  /* disable MCE */
-- 
1.6.3.3

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