IB/qib: Use pci_dev->revision

The driver reads PCI revision ID from the PCI configuration register
while it's already stored by PCI subsystem in the revision field of
struct pci_dev.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c
index 48b6674..891cc2f 100644 (file)
--- a/drivers/infiniband/hw/qib/qib_pcie.c
+++ b/drivers/infiniband/hw/qib/qib_pcie.c
@@ -526,11 +526,8 @@ static int qib_tune_pcie_coalesce(struct qib_devdata *dd)
         */
        devid = parent->device;
        if (devid >= 0x25e2 && devid <= 0x25fa) {
-               u8 rev;
-
                /* 5000 P/V/X/Z */
-               pci_read_config_byte(parent, PCI_REVISION_ID, &rev);
-               if (rev <= 0xb2)
+               if (parent->revision <= 0xb2)
                        bits = 1U << 10;
                else
                        bits = 7U << 10;