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PCI/ACPI: Check acpi_resource_to_address64() return value

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We should check the acpi_resource_to_address64() return value, which
also removes the need to validate the resource type beforehand.
No functional change.

Found by Coverity (CID 113815).

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bjorn Helgaas 2012-06-21 23:48:50 -06:00
parent 12b03188ab
commit f6c1c8ff43
1 changed files with 3 additions and 4 deletions
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7
drivers/acpi/pci_root.c
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@ -100,13 +100,12 @@ get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
{
struct resource *res = data;
struct acpi_resource_address64 address;
acpi_status status;
if (resource->type != ACPI_RESOURCE_TYPE_ADDRESS16 &&
resource->type != ACPI_RESOURCE_TYPE_ADDRESS32 &&
resource->type != ACPI_RESOURCE_TYPE_ADDRESS64)
status = acpi_resource_to_address64(resource, &address);
if (ACPI_FAILURE(status))
return AE_OK;
acpi_resource_to_address64(resource, &address);
if ((address.address_length > 0) &&
(address.resource_type == ACPI_BUS_NUMBER_RANGE)) {
res->start = address.minimum;