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    Subject[patch 33/33] ACPICA: Allow multiple backslash prefix in namepaths
    2.6.28-stable review patch.  If anyone has any objections, please let us know.

    ------------------

    From: Lin Ming <ming.m.lin@intel.com>

    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>

    ---
    drivers/acpi/namespace/nsutils.c | 8 +++++++-
    1 file changed, 7 insertions(+), 1 deletion(-)

    --- a/drivers/acpi/namespace/nsutils.c
    +++ b/drivers/acpi/namespace/nsutils.c
    @@ -314,9 +314,15 @@ void acpi_ns_get_internal_name_length(st
    *
    * 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


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