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path: root/drivers/acpi/namespace
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Diffstat (limited to 'drivers/acpi/namespace')
-rw-r--r--drivers/acpi/namespace/nsinit.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c
index 326af8f..33db224 100644
--- 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++;