From: Jon Mason Date: Mon, 27 Jun 2011 07:44:01 +0000 (+0000) Subject: igb: remove unnecessary reads of PCI_CAP_ID_EXP X-Git-Tag: v2.6.39-400.9.0~423^2~19^2~11^2~305 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ebdbf67277be5b7defd3c640e5e6cd710a9ec08e;p=users%2Fjedix%2Flinux-maple.git 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 Signed-off-by: David S. Miller (cherry picked from commit bdaae04c65ef88645f50dabb43992033c754c4a7) Signed-off-by: Joe Jin --- diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 37688868b7a32..c5e8fea1d04c4 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -6272,7 +6272,7 @@ 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; @@ -6286,7 +6286,7 @@ 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;