From: Lin Ming Date: Thu, 13 Nov 2008 02:54:39 +0000 (+0800) Subject: ACPICA: Allow multiple backslash prefix in namepaths X-Git-Tag: v2.6.29-rc1~34^2~43 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=d037c5fd7367548191eab2b376a1d08c4ffaf7ff;p=linux-2.6-omap-h63xx.git ACPICA: Allow multiple backslash prefix in namepaths 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 --- 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