x86, xen: Initialize cx to suppress warning
authorH. Peter Anvin <hpa@zytor.com>
Wed, 26 Aug 2009 04:06:03 +0000 (21:06 -0700)
committerH. Peter Anvin <hpa@zytor.com>
Wed, 26 Aug 2009 04:10:32 +0000 (21:10 -0700)
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>
arch/x86/xen/enlighten.c

index 0b755cd7686dafc78b4dbc4da67c8d0eba571ba1..eb33aaa8415de0d7b4e13d7dd18c826829a59466 100644 (file)
@@ -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 */