[PATCH] add smp_read_barrier_depends() for m68knommu

This patch adds a definition for smp_read_barrier_depends() for the
m68knommu architecture. This is now needed to compile net/ipv4/route.c.

diff --git a/include/asm-m68knommu/system.h b/include/asm-m68knommu/system.h
index 7a420e949379d8a53fcc826fb20bbf7799763453..e12f9eb46e846245f203c6487ff5a45cfd0b20dc 100644 (file)
--- a/include/asm-m68knommu/system.h
+++ b/include/asm-m68knommu/system.h
@@ -102,10 +102,12 @@ asmlinkage void resume(void);
 #define smp_mb()       mb()
 #define smp_rmb()      rmb()
 #define smp_wmb()      wmb()
+#define smp_read_barrier_depends()     read_barrier_depends()
 #else
 #define smp_mb()       barrier()
 #define smp_rmb()      barrier()
 #define smp_wmb()      barrier()
+#define smp_read_barrier_depends()     do { } while(0)
 #endif
 
 #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))