pciehp: use pci_pcie_cap()
Use pci_pcie_cap() instead of pci_find_capability() to get PCIe capability
offset in pciehp driver. This avoids unnecessary search in PCI
configuration space. This patch also removes 'cap_base' field in
struct controller, that was used to hold PCIe capability offset by
pciehp itself.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/hotplug/pciehp_acpi.c b/drivers/pci/hotplug/pciehp_acpi.c
index 37c8d3d..b09b083 100644
--- a/drivers/pci/hotplug/pciehp_acpi.c
+++ b/drivers/pci/hotplug/pciehp_acpi.c
@@ -87,7 +87,8 @@
/* Note: pciehp_detect_mode != PCIEHP_DETECT_ACPI here */
if (pciehp_get_hp_hw_control_from_firmware(pdev))
return -ENODEV;
- if (!(pos = pci_find_capability(pdev, PCI_CAP_ID_EXP)))
+ pos = pci_pcie_cap(pdev);
+ if (!pos)
return -ENODEV;
pci_read_config_dword(pdev, pos + PCI_EXP_SLTCAP, &slot_cap);
slot = kzalloc(sizeof(*slot), GFP_KERNEL);