From: H. Peter Anvin <hpa@zytor.com>
Date: Wed, 26 Aug 2009 04:06:03 +0000 (-0700)
Subject: x86, xen: Initialize cx to suppress warning
X-Git-Tag: upstream/snapshot3+hdmi~17756^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7adb4df410966dfe43e4815256e3215110648fb8;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

x86, xen: Initialize cx to suppress warning

Initialize cx before calling xen_cpuid(), in order to suppress the
"may be used uninitialized in this function" warning.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
---

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 0b755cd..eb33aaa 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -215,6 +215,7 @@ static __init void xen_init_cpuid_mask(void)
 			  (1 << X86_FEATURE_ACPI));  /* disable ACPI */
 
 	ax = 1;
+	cx = 0;
 	xen_cpuid(&ax, &bx, &cx, &dx);
 
 	/* cpuid claims we support xsave; try enabling it to see what happens */