[PATCH v2 09/16] PCI: dwc: intel-gw: Use cached PCIe capability offset

[Hans Zhang]

dw_pcie_host_init() calls .init before caching the offset, so inside
.init we must call dw_pcie_get_pcie_cap() to obtain the offset (hardware
is already enabled). The helper will cache the result for later use.

Signed-off-by: Hans Zhang <18255117159@xxxxxxx>
---
In pcie-intel-gw, the call chain is:

  static const struct dw_pcie_host_ops intel_pcie_dw_ops = {
    .init = intel_pcie_rc_init,
  };
  intel_pcie_rc_init()
    -> intel_pcie_host_setup()
      -> intel_pcie_link_setup()
        -> dw_pcie_find_capability()
---
 drivers/pci/controller/dwc/pcie-intel-gw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c
index 2674cd376f49..568b2634d08d 100644
--- a/drivers/pci/controller/dwc/pcie-intel-gw.c
+++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
@@ -120,7 +120,7 @@ static void intel_pcie_ltssm_disable(struct intel_pcie *pcie)
 static void intel_pcie_link_setup(struct intel_pcie *pcie)
 {
 	u32 val;
-	u8 offset = dw_pcie_find_capability(&pcie->pci, PCI_CAP_ID_EXP);
+	u8 offset = dw_pcie_get_pcie_cap(&pcie->pci);
 
 	val = pcie_rc_cfg_rd(pcie, offset + PCI_EXP_LNKCTL);
 
-- 
2.34.1