Fix Xen to build with gcc-4.1.

Signed-off-by: Vincent Hanquez <vincent@xensource.com>

diff --git a/xen/include/asm-x86/apic.h b/xen/include/asm-x86/apic.h
index 2dc0ce8c27eda65926aa2adaa4f3cef463147cde..c03dbbe52bbc7c3b737c4d163ddcc49ed9769176 100644 (file)
--- a/xen/include/asm-x86/apic.h
+++ b/xen/include/asm-x86/apic.h
@@ -43,7 +43,7 @@ static __inline void apic_write(unsigned long reg, u32 v)
 
 static __inline void apic_write_atomic(unsigned long reg, u32 v)
 {
-       xchg((volatile u32 *)(APIC_BASE+reg), v);
+       (void)xchg((volatile u32 *)(APIC_BASE+reg), v);
 }
 
 static __inline u32 apic_read(unsigned long reg)