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| author | Lin Ming <ming.m.lin@intel.com> | 2008-11-13 10:54:39 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-06 13:47:24 -0800 |
| commit | 723060e9421fb0bf065cfdd962df39a8daa450bb (patch) | |
| tree | 256feb645be9092914da4259af75646bb4692062 | |
| parent | 1b3826f5b9b1b9e3e60300080834b8979e63bd94 (diff) | |
| download | linux-stable-723060e9421fb0bf065cfdd962df39a8daa450bb.tar.gz linux-stable-723060e9421fb0bf065cfdd962df39a8daa450bb.tar.bz2 linux-stable-723060e9421fb0bf065cfdd962df39a8daa450bb.zip | |
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 <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/acpi/namespace/nsutils.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/acpi/namespace/nsutils.c b/drivers/acpi/namespace/nsutils.c index b0817e1127b1..337fb04e0388 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 |