From 94f67585bfe7b543f72ec3e55a768d3aa1a79b6e Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Thu, 13 Nov 2008 10:54:39 +0800 Subject: [PATCH] ACPICA: Allow multiple backslash prefix in namepaths commit d037c5fd7367548191eab2b376a1d08c4ffaf7ff upstream. 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 Signed-off-by: Bob Moore Signed-off-by: Len Brown Cc: Thomas Renninger Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/namespace/nsutils.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/namespace/nsutils.c b/drivers/acpi/namespace/nsutils.c index b0817e1127b..337fb04e038 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 -- 2.11.4.GIT