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

[linux-drm-fsl-dcu.git] / drivers / acpi / namespace / nsinit.c

diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c
index aec8488c001951b514b290784883e4e045ca7d72..33db2241044e5930430c5091f6580c9013721f15 100644 (file)
--- a/drivers/acpi/namespace/nsinit.c
+++ b/drivers/acpi/namespace/nsinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2006, R. Byron Moore
+ * Copyright (C) 2000 - 2007, R. Byron Moore
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -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")
@@ -213,7 +214,7 @@ acpi_ns_init_one_object(acpi_handle obj_handle,
                        u32 level, void *context, void **return_value)
 {
        acpi_object_type type;
-       acpi_status status;
+       acpi_status status = AE_OK;
        struct acpi_init_walk_info *info =
            (struct acpi_init_walk_info *)context;
        struct acpi_namespace_node *node =
@@ -267,10 +268,7 @@ acpi_ns_init_one_object(acpi_handle obj_handle,
        /*
         * Must lock the interpreter before executing AML code
         */
-       status = acpi_ex_enter_interpreter();
-       if (ACPI_FAILURE(status)) {
-               return (status);
-       }
+       acpi_ex_enter_interpreter();
 
        /*
         * Each of these types can contain executable AML code within the
@@ -537,7 +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++;