avr32: nmi_enter() without nmi_exit()

While updating the rcu code, I noticed that do_nmi() for AVR32 is odd:
There is an nmi_enter() call without an nmi_exit().
This can't be correct, it breaks rcu (at least the preempt version) and
lockdep.

[haavard.skinnemoen@atmel.com: fixed another case that returned directly]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

diff --git a/arch/avr32/kernel/traps.c b/arch/avr32/kernel/traps.c
index b835c4c..0d98737 100644 (file)
--- a/arch/avr32/kernel/traps.c
+++ b/arch/avr32/kernel/traps.c
@@ -116,15 +116,15 @@ asmlinkage void do_nmi(unsigned long ecr, struct pt_regs *regs)
        switch (ret) {
        case NOTIFY_OK:
        case NOTIFY_STOP:
-               return;
+               break;
        case NOTIFY_BAD:
                die("Fatal Non-Maskable Interrupt", regs, SIGINT);
        default:
+               printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n");
+               nmi_disable();
                break;
        }
-
-       printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n");
-       nmi_disable();
+       nmi_exit();
 }
 
 asmlinkage void do_critical_exception(unsigned long ecr, struct pt_regs *regs)