#define RAID6_DEBUG 0 /* Extremely verbose printk */
#define RAID6_PARANOIA 1 /* Check spinlocks */
#define RAID6_DUMPSTATE 0 /* Include stripe cache state in /proc/mdstat */
-#if RAID6_PARANOIA && CONFIG_SMP
+#if RAID6_PARANOIA && defined(CONFIG_SMP)
# define CHECK_DEVLOCK() if (!spin_is_locked(&conf->device_lock)) BUG()
#else
# define CHECK_DEVLOCK()