From: Bob Moore <robert.moore@intel.com>
Date: Wed, 22 Apr 2009 04:57:40 +0000 (+0800)
Subject: ACPICA: Fix possible dereference of null pointer
X-Git-Tag: v2.6.31-rc1~319^2~19
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=65259094c3e038519a2d8fa6fbc6256f04ad6535;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

ACPICA: Fix possible dereference of null pointer

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>
---

diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index d9e8cbc..7f8e066 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -144,7 +144,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
 
 	pathname = acpi_ns_get_external_pathname(node);
 	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:
-	if (pathname != predefined->info.name) {
-		ACPI_FREE(pathname);
-	}
-
+	ACPI_FREE(pathname);
 	return (status);
 }