update x86 atomic, add test atomic

[urcu.git] / arch_atomic_x86.h

diff --git a/arch_atomic_x86.h b/arch_atomic_x86.h
index a762a5ce8b366b74bbff3333607f776c0d18fbcb..3422cb4734a0a5e2dd57ff2147f86cd783b58c97 100644 (file)
--- a/arch_atomic_x86.h
+++ b/arch_atomic_x86.h
@@ -159,7 +159,7 @@ unsigned long _atomic_exchange(volatile void *addr, unsigned long val, int len)
 /* atomic_add */
 
 static inline __attribute__((always_inline))
-unsigned long _atomic_add(volatile void *addr, unsigned long val, int len)
+void _atomic_add(volatile void *addr, unsigned long val, int len)
 {
        switch (len) {
        case 1:
@@ -200,7 +200,7 @@ unsigned long _atomic_add(volatile void *addr, unsigned long val, int len)
        /* generate an illegal instruction. Cannot catch this with linker tricks
         * when optimizations are disabled. */
        __asm__ __volatile__("ud2");
-       return 0;
+       return;
 }
 
 #define atomic_add(addr, v)                                               \