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authorJon Mason <jdmason@kudzu.us>2011-06-27 21:40:38 +0400
committerRoland Dreier <roland@purestorage.com>2011-07-18 22:57:52 +0400
commit7f27cda03708e3460849f82b47c604f1492e3777 (patch)
treee6e1648a6df5da07662a9496776baf6dcac765e6 /drivers/infiniband/hw/qib
parent0cd85e6738976b753fb156d833c94083418b3ae4 (diff)
downloadlinux-7f27cda03708e3460849f82b47c604f1492e3777.tar.xz
IB/qib: 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: Mike Marciniszyn <mike.marciniszyn@qlogic.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/qib')
-rw-r--r--drivers/infiniband/hw/qib/qib_pcie.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c
index 891cc2ff5f00..4426782ad288 100644
--- a/drivers/infiniband/hw/qib/qib_pcie.c
+++ b/drivers/infiniband/hw/qib/qib_pcie.c
@@ -255,7 +255,7 @@ int qib_pcie_params(struct qib_devdata *dd, u32 minw, u32 *nent,
u16 linkstat, speed;
int pos = 0, pose, ret = 1;
- pose = pci_find_capability(dd->pcidev, PCI_CAP_ID_EXP);
+ pose = pci_pcie_cap(dd->pcidev);
if (!pose) {
qib_dev_err(dd, "Can't find PCI Express capability!\n");
/* set up something... */
@@ -509,7 +509,7 @@ static int qib_tune_pcie_coalesce(struct qib_devdata *dd)
qib_devinfo(dd->pcidev, "Parent not root\n");
return 1;
}
- ppos = pci_find_capability(parent, PCI_CAP_ID_EXP);
+ ppos = pci_pcie_cap(parent);
if (!ppos)
return 1;
if (parent->vendor != 0x8086)
@@ -578,14 +578,14 @@ static int qib_tune_pcie_caps(struct qib_devdata *dd)
qib_devinfo(dd->pcidev, "Parent not root\n");
goto bail;
}
- ppos = pci_find_capability(parent, PCI_CAP_ID_EXP);
+ ppos = pci_pcie_cap(parent);
if (ppos) {
pci_read_config_word(parent, ppos + PCI_EXP_DEVCAP, &pcaps);
pci_read_config_word(parent, ppos + PCI_EXP_DEVCTL, &pctl);
} else
goto bail;
/* Find out supported and configured values for endpoint (us) */
- epos = pci_find_capability(dd->pcidev, PCI_CAP_ID_EXP);
+ epos = pci_pcie_cap(dd->pcidev);
if (epos) {
pci_read_config_word(dd->pcidev, epos + PCI_EXP_DEVCAP, &ecaps);
pci_read_config_word(dd->pcidev, epos + PCI_EXP_DEVCTL, &ectl);