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ACPICA: Fix possible dereference of null pointer

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Fix dereference of possibly null pointer "Predefined" in the case
where the method is not one of the predefined methods.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore 2009-04-22 12:57:40 +08:00 • committed by Len Brown
parent b21245a85e
commit 65259094c3
1 changed files with 2 additions and 5 deletions
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7
drivers/acpi/acpica/nspredef.c
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@ -144,7 +144,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
pathname = acpi_ns_get_external_pathname(node); pathname = acpi_ns_get_external_pathname(node);
if (!pathname) { if (!pathname) {
pathname = ACPI_CAST_PTR(char, predefined->info.name); return AE_OK; /* Could not get pathname, ignore */
} }
/* /*
@ -230,10 +230,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
} }
exit: exit:
if (pathname != predefined->info.name) { ACPI_FREE(pathname);
ACPI_FREE(pathname);
}
return (status); return (status);
} }