diff --git a/[refs] b/[refs]
index 33d686a8acb7..589fd5e1d157 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5572a9859fa55216597b8226717691956d3e53e3
+refs/heads/master: d037c5fd7367548191eab2b376a1d08c4ffaf7ff
diff --git a/trunk/drivers/acpi/namespace/nsutils.c b/trunk/drivers/acpi/namespace/nsutils.c
index b0817e1127b1..337fb04e0388 100644
--- a/trunk/drivers/acpi/namespace/nsutils.c
+++ b/trunk/drivers/acpi/namespace/nsutils.c
@@ -314,9 +314,15 @@ void acpi_ns_get_internal_name_length(struct acpi_namestring_info *info)
 	 *
 	 * strlen() + 1 covers the first name_seg, which has no path separator
 	 */
-	if (acpi_ns_valid_root_prefix(next_external_char[0])) {
+	if (acpi_ns_valid_root_prefix(*next_external_char)) {
 		info->fully_qualified = TRUE;
 		next_external_char++;
+
+		/* Skip redundant root_prefix, like \\_SB.PCI0.SBRG.EC0 */
+
+		while (acpi_ns_valid_root_prefix(*next_external_char)) {
+			next_external_char++;
+		}
 	} else {
 		/*
 		 * Handle Carat prefixes