1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index 0dc5b8da0007..7e9c97b09404 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -77,6 +77,10 @@ MODULE_PARM_DESC(msi, "attempt to use MSI if nonzero");
 
 #endif /* CONFIG_PCI_MSI */
 
+static int tune_pci = 0;
+module_param(tune_pci, int, 0444);
+MODULE_PARM_DESC(tune_pci, "increase PCI burst from the default set by BIOS if nonzero");
+
 static const char mthca_version[] __devinitdata =
         DRV_NAME ": Mellanox InfiniBand HCA driver v"
         DRV_VERSION " (" DRV_RELDATE ")\n";
@@ -98,6 +102,9 @@ static int __devinit mthca_tune_pci(struct mthca_dev *mdev)
         int cap;
         u16 val;
 
+        if (!tune_pci)
+                return 0;
+
         /* First try to max out Read Byte Count */
         cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
         if (cap) {