ACPI/PCI: another multiple _OSC memory leak fix
The acpi_query_osc() function can be called for the ACPI object that
doesn't have _OSC method. In this case, acpi_get_osc_data() would
allocate a useless memory region. To avoid this, we need to check the
existence of _OSC before calling acpi_get_osc_data() in acpi_query_osc().
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 38fc8b1..9d6fc8e 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -60,9 +60,15 @@
union acpi_object *out_obj;
u32 osc_dw0;
acpi_status *ret_status = (acpi_status *)retval;
- struct acpi_osc_data *osc_data = acpi_get_osc_data(handle);
+ struct acpi_osc_data *osc_data;
u32 flags = (unsigned long)context, temp;
+ acpi_handle tmp;
+ status = acpi_get_handle(handle, "_OSC", &tmp);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ osc_data = acpi_get_osc_data(handle);
if (!osc_data) {
printk(KERN_ERR "acpi osc data array is full\n");
return AE_ERROR;