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ACPICA: Add a check for a null node during namespace walk.

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Mostly for consistency. ACPICA BZ 1042.

Actually, currently no one is experiencing problem without this check
as the obj_handle is guaranteed to be valid.

References: https://bugs.acpica.org/show_bug.cgi?id=1042
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bob Moore 2013-10-29 09:29:04 +08:00 • committed by Rafael J. Wysocki
parent d7da179423
commit 48961ce627
1 changed files with 7 additions and 0 deletions
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7
drivers/acpi/acpica/nsdump.c
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@ -715,6 +715,13 @@ acpi_ns_dump_one_object_path(acpi_handle obj_handle,
} }
node = acpi_ns_validate_handle(obj_handle); node = acpi_ns_validate_handle(obj_handle);
if (!node) {
/* Ignore bad node during namespace walk */
return (AE_OK);
}
pathname = acpi_ns_get_external_pathname(node); pathname = acpi_ns_get_external_pathname(node);
path_indent = 1; path_indent = 1;