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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 <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Lin Ming 2008-11-13 10:54:39 +08:00 committed by Len Brown
parent 5572a9859f
commit d037c5fd73
1 changed files with 7 additions and 1 deletions
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8
drivers/acpi/namespace/nsutils.c
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@ -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