X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=drivers%2Facpi%2Facpica%2Fnsdump.c;h=b683cc2ff9d3cc15d0acd687f11a8d70bbcf17b3;hp=a54dc39e304b2e2a0c34835aca4464b17032d251;hb=c170093d31bd4e3bc51881cc0f123beeca7872c9;hpb=3dc8d7f07e7496c0c6702e7e4b1acc179fa94019

diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index a54dc39e304b..b683cc2ff9d3 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2010, Intel Corp.
+ * Copyright (C) 2000 - 2011, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -624,9 +624,22 @@ acpi_ns_dump_objects(acpi_object_type type,
 		     acpi_owner_id owner_id, acpi_handle start_handle)
 {
 	struct acpi_walk_info info;
+	acpi_status status;
 
 	ACPI_FUNCTION_ENTRY();
 
+	/*
+	 * Just lock the entire namespace for the duration of the dump.
+	 * We don't want any changes to the namespace during this time,
+	 * especially the temporary nodes since we are going to display
+	 * them also.
+	 */
+	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not acquire namespace mutex\n");
+		return;
+	}
+
 	info.debug_level = ACPI_LV_TABLES;
 	info.owner_id = owner_id;
 	info.display_type = display_type;
@@ -636,6 +649,8 @@ acpi_ns_dump_objects(acpi_object_type type,
 				     ACPI_NS_WALK_TEMP_NODES,
 				     acpi_ns_dump_one_object, NULL,
 				     (void *)&info, NULL);
+
+	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 }
 #endif				/* ACPI_FUTURE_USAGE */