Commit 68dd49ef authored Jun 30, 2011 by Jon Mason Committed by John W. Linville Jul 06, 2011

iwlwifi: remove unnecessary read 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>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 333c0dbf

drivers/net/wireless/iwlwifi/iwl-pci.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -94,7 +94,7 @@ static u16 iwl_pciexp_link_ctrl(struct iwl_bus *bus)
		u16 pci_lnk_ctl;
		struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);

		pos = pci_find_capability(pci_dev, PCI_CAP_ID_EXP);
		pos = pci_pcie_cap(pci_dev);
		pci_read_config_word(pci_dev, pos + PCI_EXP_LNKCTL, &pci_lnk_ctl);
		return pci_lnk_ctl;
		}