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igb: 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.

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Mason 2011-06-27 07:44:01 +00:00 committed by David S. Miller
parent 353064de8a
commit bdaae04c65
1 changed files with 2 additions and 2 deletions
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4
drivers/net/igb/igb_main.c
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@ -6267,7 +6267,7 @@ s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
struct igb_adapter *adapter = hw->back;
u16 cap_offset;
cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
cap_offset = adapter->pdev->pcie_cap;
if (!cap_offset)
return -E1000_ERR_CONFIG;
@ -6281,7 +6281,7 @@ s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
struct igb_adapter *adapter = hw->back;
u16 cap_offset;
cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
cap_offset = adapter->pdev->pcie_cap;
if (!cap_offset)
return -E1000_ERR_CONFIG;