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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/pci/hotplug/pciehp_acpi.c b/drivers/pci/hotplug/pciehp_acpi.c
index 37c8d3d0323e..b09b083011d6 100644
--- a/drivers/pci/hotplug/pciehp_acpi.c
+++ b/drivers/pci/hotplug/pciehp_acpi.c
@@ -87,7 +87,8 @@ static int __init dummy_probe(struct pcie_device *dev)
         /* 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);