Index: generic/src/synch/rwlock.c
===================================================================
--- generic/src/synch/rwlock.c	(revision cc73a8a1c3f4258036feb316078a8f908f7bfe40)
+++ generic/src/synch/rwlock.c	(revision 0ffa3ef51d117153ad4c8c5fdb3b525ff042ef01)
@@ -102,5 +102,5 @@
  * @return See comment for waitq_sleep_timeout().
  */
-int _rwlock_write_lock_timeout(rwlock_t *rwl, __u32 usec, int flags)
+int _rwlock_write_lock_timeout(rwlock_t *rwl, uint32_t usec, int flags)
 {
 	ipl_t ipl;
@@ -156,5 +156,5 @@
  * @return See comment for waitq_sleep_timeout().
  */
-int _rwlock_read_lock_timeout(rwlock_t *rwl, __u32 usec, int flags)
+int _rwlock_read_lock_timeout(rwlock_t *rwl, uint32_t usec, int flags)
 {
 	int rc;