[PATCH 1/1] XEN: enlighten, use uninitialized_var(cx)

[Jiri Slaby]

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 at gmail.com>
Cc: Jeremy Fitzhardinge <jeremy at xensource.com>
Cc: Chris Wright <chrisw at sous-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