PCI: hotplug: Remove unnecessary "dev->bus" test

Every pci_dev is on a valid pci_bus, so we don't need to test whether
dev->bus is NULL or not.

The only exceptions are a few legacy cases like alpha_core_agp_setup(),
parisc_agp_setup(), and megaraid's make_local_pdev(), where we allocate a
pci_dev with a NULL bus pointer.  These are dubious uses (especially the
megaraid one), and I don't think it's possible to exercise this
pci_configure_slot() path with any of them.

Found by Coverity (CID 146446).

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/hotplug/pcihp_slot.c b/drivers/pci/hotplug/pcihp_slot.c
index 16f9203..e246a10 100644 (file)
--- a/drivers/pci/hotplug/pcihp_slot.c
+++ b/drivers/pci/hotplug/pcihp_slot.c
@@ -160,8 +160,7 @@ void pci_configure_slot(struct pci_dev *dev)
                        (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
                return;
 
-       if (dev->bus)
-               pcie_bus_configure_settings(dev->bus);
+       pcie_bus_configure_settings(dev->bus);
 
        memset(&hpp, 0, sizeof(hpp));
        ret = pci_get_hp_params(dev, &hpp);