myri10ge: 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 <mason@myri.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index a0d4c61..42ea4f8 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -1081,7 +1081,7 @@
int ret, cap, err;
u16 ctl;
- cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+ cap = pci_pcie_cap(pdev);
if (!cap)
return 0;
@@ -3191,7 +3191,7 @@
{
struct pci_dev *bridge = mgp->pdev->bus->self;
struct device *dev = &mgp->pdev->dev;
- unsigned cap;
+ int cap;
unsigned err_cap;
u16 val;
u8 ext_type;
@@ -3201,7 +3201,7 @@
return;
/* check that the bridge is a root port */
- cap = pci_find_capability(bridge, PCI_CAP_ID_EXP);
+ cap = pci_pcie_cap(bridge);
pci_read_config_word(bridge, cap + PCI_CAP_FLAGS, &val);
ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
if (ext_type != PCI_EXP_TYPE_ROOT_PORT) {
@@ -3219,8 +3219,7 @@
" to force ECRC\n");
return;
}
- cap =
- pci_find_capability(bridge, PCI_CAP_ID_EXP);
+ cap = pci_pcie_cap(bridge);
pci_read_config_word(bridge,
cap + PCI_CAP_FLAGS, &val);
ext_type = (val & PCI_EXP_FLAGS_TYPE) >> 4;
@@ -3341,7 +3340,7 @@
int link_width, exp_cap;
u16 lnk;
- exp_cap = pci_find_capability(mgp->pdev, PCI_CAP_ID_EXP);
+ exp_cap = pci_pcie_cap(mgp->pdev);
pci_read_config_word(mgp->pdev, exp_cap + PCI_EXP_LNKSTA, &lnk);
link_width = (lnk >> 4) & 0x3f;