---

yaml
---
r: 20127
b: refs/heads/master
c: 49bca4c
h: refs/heads/master
i:
  20125: 42aee7b
  20123: 0b86e4e
  20119: db716fc
  20111: 2867e30
  20095: a6c425e
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 99595d0237926b5aba1fe4c844a011a1ba1ee1f8
+refs/heads/master: 49bca4c2815feafd5f999bf43baf87e0dd8d1d08

trunk/arch/arm/kernel/entry-armv.S

@@ -333,9 +333,13 @@ __pabt_svc:
 					@ from the exception stack
 
 #if __LINUX_ARM_ARCH__ < 6 && !defined(CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG)
+#ifndef CONFIG_MMU
+#warning "NPTL on non MMU needs fixing"
+#else
 	@ make sure our user space atomic helper is aborted
 	cmp	r2, #TASK_SIZE
 	bichs	r3, r3, #PSR_Z_BIT
+#endif
 #endif
 
 	@
@@ -756,12 +760,18 @@ __kuser_cmpxchg:				@ 0xffff0fc0
 	 * exception happening just after the str instruction which would
 	 * clear the Z flag although the exchange was done.
 	 */
+#ifdef CONFIG_MMU
 	teq	ip, ip			@ set Z flag
 	ldr	ip, [r2]		@ load current val
 	add	r3, r2, #1		@ prepare store ptr
 	teqeq	ip, r0			@ compare with oldval if still allowed
 	streq	r1, [r3, #-1]!		@ store newval if still allowed
 	subs	r0, r2, r3		@ if r2 == r3 the str occured
+#else
+#warning "NPTL on non MMU needs fixing"
+	mov	r0, #-1
+	adds	r0, r0, #0
+#endif
 	mov	pc, lr
 
 #else