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iwlwifi: collapse wrapper for pcie_capability_read_word() 

iwl_pciexp_link_ctrl() has only one call site and no longer provides any
useful abstraction, so collapse it into the caller.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Bjorn Helgaas 2012-12-05 13:51:20 -07:00
parent f93eaffcac
commit b9d146e30a
1 changed files with 4 additions and 11 deletions
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15
drivers/net/wireless/iwlwifi/pcie/trans.c
View File

@ -673,18 +673,11 @@ static void iwl_set_pwr_vmain(struct iwl_trans *trans)
#define PCI_CFG_LINK_CTRL_VAL_L0S_EN 0x01
#define PCI_CFG_LINK_CTRL_VAL_L1_EN 0x02
static u16 iwl_pciexp_link_ctrl(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u16 pci_lnk_ctl;
pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL,
&pci_lnk_ctl);
return pci_lnk_ctl;
}
static void iwl_apm_config(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u16 lctl;
/*
* HW bug W/A for instability in PCIe bus L0S->L1 transition.
* Check if BIOS (or OS) enabled L1-ASPM on this device.
@ -693,8 +686,8 @@ static void iwl_apm_config(struct iwl_trans *trans)
* If not (unlikely), enable L0S, so there is at least some
* power savings, even without L1.
*/
u16 lctl = iwl_pciexp_link_ctrl(trans);
pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl);
if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
PCI_CFG_LINK_CTRL_VAL_L1_EN) {
/* L1-ASPM enabled; disable(!) L0S */