x86/mrst: Avoid reporting wrong nmi status

[pandora-kernel.git] / arch / x86 / platform / mrst / mrst.c

diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
index b7f14e5..9b9ee29 100644 (file)
--- a/arch/x86/platform/mrst/mrst.c
+++ b/arch/x86/platform/mrst/mrst.c
@@ -276,6 +276,17 @@ static void mrst_reboot(void)
        intel_scu_ipc_simple_command(0xf1, 0);
 }
 
+/*
+ * Moorestown does not have external NMI source nor port 0x61 to report
+ * NMI status. The possible NMI sources are from pmu as a result of NMI
+ * watchdog or lock debug. Reading io port 0x61 results in 0xff which
+ * misled NMI handler.
+ */
+static unsigned char mrst_get_nmi_reason(void)
+{
+       return 0;
+}
+
 /*
  * Moorestown specific x86_init function overrides and early setup
  * calls.
@@ -297,6 +308,8 @@ void __init x86_mrst_early_setup(void)
        x86_platform.calibrate_tsc = mrst_calibrate_tsc;
        x86_platform.i8042_detect = mrst_i8042_detect;
        x86_init.timers.wallclock_init = mrst_rtc_init;
+       x86_platform.get_nmi_reason = mrst_get_nmi_reason;
+
        x86_init.pci.init = pci_mrst_init;
        x86_init.pci.fixup_irqs = x86_init_noop;