diff -Nru sysmips.c.orig sysmips.c
--- sysmips.c.orig	Wed Jun 13 11:32:09 2001
+++ sysmips.c	Wed Jun 13 11:46:06 2001
@@ -120,7 +120,23 @@
 			: "r" (&cmd));
 		/* Unreached */
 #else
-	printk("sys_sysmips(MIPS_ATOMIC_SET, ...) not ready for !CONFIG_CPU_HAS_LLSC\n");
+               /* this is handled in assembly now */
+               panic("Unexpected MIPS_ATOMIC_SET call in sys_sysmips()");
+#else
+               int flags;
+
+               /* without ll/sc, we have a broken code that kind of works */
+                /* This is broken in case of page faults and SMP ...
+                   Risc/OS fauls after maximum 20 tries with EAGAIN.  */
+                p = (int *) arg1;
+                retval = verify_area(VERIFY_WRITE, p, sizeof(*p));
+                if (retval)
+                        goto out;
+                save_and_cli(flags);
+                retval = *p;
+                *p = arg2;
+                restore_flags(flags);
+                goto out;
 #endif
 	}