1 files changed, 14 insertions, 2 deletions

diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index bbddb86c1fa1..cc4a3f120f54 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -91,6 +91,7 @@ int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
 void (*board_nmi_handler_setup)(void);
 void (*board_ejtag_handler_setup)(void);
 void (*board_bind_eic_interrupt)(int irq, int regset);
+void (*board_ebase_setup)(void);
 
 
 static void show_raw_backtrace(unsigned long reg29)
@@ -400,7 +401,7 @@ void __noreturn die(const char *str, struct pt_regs *regs)
                 panic("Fatal exception in interrupt");
 
         if (panic_on_oops) {
-                printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
+                printk(KERN_EMERG "Fatal exception: panic in 5 seconds");
                 ssleep(5);
                 panic("Fatal exception");
         }
@@ -1150,7 +1151,7 @@ asmlinkage void do_mt(struct pt_regs *regs)
 asmlinkage void do_dsp(struct pt_regs *regs)
 {
         if (cpu_has_dsp)
-                panic("Unexpected DSP exception\n");
+                panic("Unexpected DSP exception");
 
         force_sig(SIGILL, current);
 }
@@ -1339,9 +1340,18 @@ void ejtag_exception_handler(struct pt_regs *regs)
 
 /*
  * NMI exception handler.
+ * No lock; only written during early bootup by CPU 0.
  */
+static RAW_NOTIFIER_HEAD(nmi_chain);
+
+int register_nmi_notifier(struct notifier_block *nb)
+{
+        return raw_notifier_chain_register(&nmi_chain, nb);
+}
+
 void __noreturn nmi_exception_handler(struct pt_regs *regs)
 {
+        raw_notifier_call_chain(&nmi_chain, 0, regs);
         bust_spinlocks(1);
         printk("NMI taken!!!!\n");
         die("NMI", regs);
@@ -1682,6 +1692,8 @@ void __init trap_init(void)
                         ebase += (read_c0_ebase() & 0x3ffff000);
         }
 
+        if (board_ebase_setup)
+                board_ebase_setup();
         per_cpu_trap_init();
 
         /*