1 files changed, 11 insertions, 40 deletions

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 98660aedeeb7..4cbde211eb69 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -74,19 +74,19 @@ EXPORT_SYMBOL(__debugger_dabr_match);
 EXPORT_SYMBOL(__debugger_fault_handler);
 #endif
 
-struct notifier_block *powerpc_die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(powerpc_die_chain);
 
 int register_die_notifier(struct notifier_block *nb)
 {
-        int err = 0;
-        unsigned long flags;
+        return atomic_notifier_chain_register(&powerpc_die_chain, nb);
+}
+EXPORT_SYMBOL(register_die_notifier);
 
-        spin_lock_irqsave(&die_notifier_lock, flags);
-        err = notifier_chain_register(&powerpc_die_chain, nb);
-        spin_unlock_irqrestore(&die_notifier_lock, flags);
-        return err;
+int unregister_die_notifier(struct notifier_block *nb)
+{
+        return atomic_notifier_chain_unregister(&powerpc_die_chain, nb);
 }
+EXPORT_SYMBOL(unregister_die_notifier);
 
 /*
  * Trap & Exception support
@@ -97,7 +97,6 @@ static DEFINE_SPINLOCK(die_lock);
 int die(const char *str, struct pt_regs *regs, long err)
 {
         static int die_counter, crash_dump_start = 0;
-        int nl = 0;
 
         if (debugger(regs))
                 return 1;
@@ -106,7 +105,7 @@ int die(const char *str, struct pt_regs *regs, long err)
         spin_lock_irq(&die_lock);
         bust_spinlocks(1);
 #ifdef CONFIG_PMAC_BACKLIGHT
-        if (_machine == _MACH_Pmac) {
+        if (machine_is(powermac)) {
                 set_backlight_enable(1);
                 set_backlight_level(BACKLIGHT_MAX);
         }
@@ -114,46 +113,18 @@ int die(const char *str, struct pt_regs *regs, long err)
         printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter);
 #ifdef CONFIG_PREEMPT
         printk("PREEMPT ");
-        nl = 1;
 #endif
 #ifdef CONFIG_SMP
         printk("SMP NR_CPUS=%d ", NR_CPUS);
-        nl = 1;
 #endif
 #ifdef CONFIG_DEBUG_PAGEALLOC
         printk("DEBUG_PAGEALLOC ");
-        nl = 1;
 #endif
 #ifdef CONFIG_NUMA
         printk("NUMA ");
-        nl = 1;
 #endif
-#ifdef CONFIG_PPC64
-        switch (_machine) {
-        case PLATFORM_PSERIES:
-                printk("PSERIES ");
-                nl = 1;
-                break;
-        case PLATFORM_PSERIES_LPAR:
-                printk("PSERIES LPAR ");
-                nl = 1;
-                break;
-        case PLATFORM_ISERIES_LPAR:
-                printk("ISERIES LPAR ");
-                nl = 1;
-                break;
-        case PLATFORM_POWERMAC:
-                printk("POWERMAC ");
-                nl = 1;
-                break;
-        case PLATFORM_CELL:
-                printk("CELL ");
-                nl = 1;
-                break;
-        }
-#endif
-        if (nl)
-                printk("\n");
+        printk("%s\n", ppc_md.name ? "" : ppc_md.name);
+
         print_modules();
         show_regs(regs);
         bust_spinlocks(0);