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rtlwifi: remove unnecessary read of PCI_CAP_ID_EXP

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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, remove unnecessary and unused #defines for PCI.

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jon Mason 2011-06-27 12:50:14 -05:00 committed by John W. Linville
parent f05b691150
commit 6a4ecc29c9
2 changed files with 1 additions and 6 deletions
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2
drivers/net/wireless/rtlwifi/pci.c
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@ -390,7 +390,7 @@ static void rtl_pci_parse_configuration(struct pci_dev *pdev,
u8 linkctrl_reg;
/*Link Control Register */
pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
pos = pci_pcie_cap(pdev);
pci_read_config_byte(pdev, pos + PCI_EXP_LNKCTL, &linkctrl_reg);
pcipriv->ndis_adapter.linkctrl_reg = linkctrl_reg;

5
drivers/net/wireless/rtlwifi/pci.h
View file

@ -75,11 +75,6 @@
#define PCI_CONF_ADDRESS 0x0CF8 /*PCI Configuration Space Address */
#define PCI_CONF_DATA 0x0CFC /*PCI Configuration Space Data */
#define PCI_CLASS_BRIDGE_DEV 0x06
#define PCI_SUBCLASS_BR_PCI_TO_PCI 0x04
#define PCI_CAPABILITY_ID_PCI_EXPRESS 0x10
#define PCI_CAP_ID_EXP 0x10
#define U1DONTCARE 0xFF
#define U2DONTCARE 0xFFFF
#define U4DONTCARE 0xFFFFFFFF