[PATCH] cxgb4: Simplify PCIe Completion Timeout setting

[Bjorn Helgaas]

From: Bjorn Helgaas <bhelg...@google.com>

Simplify PCIe Completion Timeout setting by using the
pcie_capability_clear_and_set_word() interface.  No functional change
intended.

Signed-off-by: Bjorn Helgaas <bhelg...@google.com>
---
 drivers/net/ethernet/chelsio/cxgb4/t4_hw.c |   21 +++------------------
 1 file changed, 3 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c 
b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index f63210f15579..4c99fdb2e13b 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -8492,22 +8492,6 @@ static int t4_get_flash_params(struct adapter *adap)
        return 0;
 }
 
-static void set_pcie_completion_timeout(struct adapter *adapter, u8 range)
-{
-       u16 val;
-       u32 pcie_cap;
-
-       pcie_cap = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
-       if (pcie_cap) {
-               pci_read_config_word(adapter->pdev,
-                                    pcie_cap + PCI_EXP_DEVCTL2, &val);
-               val &= ~PCI_EXP_DEVCTL2_COMP_TIMEOUT;
-               val |= range;
-               pci_write_config_word(adapter->pdev,
-                                     pcie_cap + PCI_EXP_DEVCTL2, val);
-       }
-}
-
 /**
  *     t4_prep_adapter - prepare SW and HW for operation
  *     @adapter: the adapter
@@ -8593,8 +8577,9 @@ int t4_prep_adapter(struct adapter *adapter)
        adapter->params.portvec = 1;
        adapter->params.vpd.cclk = 50000;
 
-       /* Set pci completion timeout value to 4 seconds. */
-       set_pcie_completion_timeout(adapter, 0xd);
+       /* Set PCIe completion timeout to 4 seconds. */
+       pcie_capability_clear_and_set_word(adapter->pdev, PCI_EXP_DEVCTL2,
+                                          PCI_EXP_DEVCTL2_COMP_TIMEOUT, 0xd);
        return 0;
 }