diff mbox

[32/94] ACPICA: Allow multiple backslash prefix in namepaths

Message ID d037c5fd7367548191eab2b376a1d08c4ffaf7ff.1231492609.git.len.brown@intel.com (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Len Brown Jan. 9, 2009, 9:26 a.m. UTC 
From: Lin Ming <ming.m.lin@intel.com>

In a fully qualified namepath, allow multiple backslash prefixes.
This can happen because of the use of a double-backslash in strings
(since backslash is the escape character) causing confusion.
ACPICA BZ 739 Lin Ming.

http://www.acpica.org/bugzilla/show_bug.cgi?id=739

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/acpi/namespace/nsutils.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/drivers/acpi/namespace/nsutils.c b/drivers/acpi/namespace/nsutils.c
index b0817e1..337fb04 100644
--- a/drivers/acpi/namespace/nsutils.c
+++ b/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