sky2: remove unnecessary reads of PCI_CAP_ID_EXP
The PCIE capability offset is saved during PCI bus walking. It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it. Also, pci_is_pcie is a
better way of determining if the device is PCIE or not (as it uses the
same saved PCIE capability offset).
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index d252cb1..e14b86e 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1449,7 +1449,7 @@
sky2_qset(hw, rxq);
/* On PCI express lowering the watermark gives better performance */
- if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
+ if (pci_is_pcie(hw->pdev))
sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
/* These chips have no ram buffer?
@@ -3072,7 +3072,7 @@
{
struct pci_dev *pdev = hw->pdev;
u16 status;
- int i, cap;
+ int i;
u32 hwe_mask = Y2_HWE_ALL_MASK;
/* disable ASF */
@@ -3108,8 +3108,7 @@
sky2_write8(hw, B0_CTST, CS_MRST_CLR);
- cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
- if (cap) {
+ if (pci_is_pcie(pdev)) {
sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
0xfffffffful);
@@ -3171,11 +3170,11 @@
/* check if PSMv2 was running before */
reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
- if (reg & PCI_EXP_LNKCTL_ASPMC) {
- cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+ if (reg & PCI_EXP_LNKCTL_ASPMC)
/* restore the PCIe Link Control register */
- sky2_pci_write16(hw, cap + PCI_EXP_LNKCTL, reg);
- }
+ sky2_pci_write16(hw, pdev->pcie_cap + PCI_EXP_LNKCTL,
+ reg);
+
sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
/* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */