X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=drivers%2Facpi%2Facpica%2Ftbfind.c;h=a3f7b3789cdcad9dddeb6ad234ca1c563f8933c2;hb=22db73f6a29cd08748ffbdcca423edcc32edd843;hp=e348d616e60f29e095d476c02b938c33fa78c827;hpb=ecf140dfc3fe169aaff8f5561d345f6b96d7b476;p=deliverable%2Flinux.git

diff --git a/drivers/acpi/acpica/tbfind.c b/drivers/acpi/acpica/tbfind.c
index e348d616e60f..a3f7b3789cdc 100644
--- a/drivers/acpi/acpica/tbfind.c
+++ b/drivers/acpi/acpica/tbfind.c
@@ -68,7 +68,7 @@ acpi_status
 acpi_tb_find_table(char *signature,
 		   char *oem_id, char *oem_table_id, u32 *table_index)
 {
-	acpi_status status;
+	acpi_status status = AE_OK;
 	struct acpi_table_header header;
 	u32 i;
 
@@ -96,6 +96,7 @@ acpi_tb_find_table(char *signature,
 
 	/* Search for the table */
 
+	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
 	for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
 		if (memcmp(&(acpi_gbl_root_table_list.tables[i].signature),
 			   header.signature, ACPI_NAME_SIZE)) {
@@ -115,7 +116,7 @@ acpi_tb_find_table(char *signature,
 			    acpi_tb_validate_table(&acpi_gbl_root_table_list.
 						   tables[i]);
 			if (ACPI_FAILURE(status)) {
-				return_ACPI_STATUS(status);
+				goto unlock_and_exit;
 			}
 
 			if (!acpi_gbl_root_table_list.tables[i].pointer) {
@@ -144,9 +145,12 @@ acpi_tb_find_table(char *signature,
 			ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
 					  "Found table [%4.4s]\n",
 					  header.signature));
-			return_ACPI_STATUS(AE_OK);
+			goto unlock_and_exit;
 		}
 	}
+	status = AE_NOT_FOUND;
 
+unlock_and_exit:
+	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
 	return_ACPI_STATUS(AE_NOT_FOUND);
 }