Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq

[pandora-kernel.git] / drivers / acpi / namespace / nsinit.c

diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c
index 326af8f..33db224 100644 (file)
--- a/drivers/acpi/namespace/nsinit.c
+++ b/drivers/acpi/namespace/nsinit.c
@@ -45,6 +45,7 @@
 #include <acpi/acnamesp.h>
 #include <acpi/acdispat.h>
 #include <acpi/acinterp.h>
+#include <linux/nmi.h>
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsinit")
@@ -534,7 +535,15 @@ acpi_ns_init_one_device(acpi_handle obj_handle,
        info->parameter_type = ACPI_PARAM_ARGS;
        info->flags = ACPI_IGNORE_RETURN_VALUE;
 
+       /*
+        * Some hardware relies on this being executed as atomically
+        * as possible (without an NMI being received in the middle of
+        * this) - so disable NMIs and initialize the device:
+        */
+       acpi_nmi_disable();
        status = acpi_ns_evaluate(info);
+       acpi_nmi_enable();
+
        if (ACPI_SUCCESS(status)) {
                walk_info->num_INI++;