1 files changed, 14 insertions, 4 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index e7617c3982ea..398add4d4cb1 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -418,9 +418,19 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
 
         ret = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
         if (ret) {
-                dev_info(&pdev->dev, "pci_set_dma_mask unit %u "
-                         "fails: %d\n", dd->ipath_unit, ret);
-                goto bail_regions;
+                /*
+                 * if the 64 bit setup fails, try 32 bit.  Some systems
+                 * do not setup 64 bit maps on systems with 2GB or less
+                 * memory installed.
+                 */
+                ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+                if (ret) {
+                        dev_info(&pdev->dev, "pci_set_dma_mask unit %u "
+                                 "fails: %d\n", dd->ipath_unit, ret);
+                        goto bail_regions;
+                }
+                else
+                        ipath_dbg("No 64bit DMA mask, used 32 bit mask\n");
         }
 
         pci_set_master(pdev);
@@ -1949,7 +1959,7 @@ int ipath_reset_device(int unit)
         }
 
         if (dd->ipath_pd)
-                for (i = 1; i < dd->ipath_portcnt; i++) {
+                for (i = 1; i < dd->ipath_cfgports; i++) {
                         if (dd->ipath_pd[i] && dd->ipath_pd[i]->port_cnt) {
                                 ipath_dbg("unit %u port %d is in use "
                                           "(PID %u cmd %s), can't reset\n",