[PATCH] IB/ipath: print better debug info when handling 32/64-bit DMA mask problems

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 20 insertions, 3 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index 290080b2c8f1..9763d3af830b 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -425,12 +425,29 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
                  */
                 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);
+                        dev_info(&pdev->dev,
+                                "Unable to set DMA mask for unit %u: %d\n",
+                                dd->ipath_unit, ret);
                         goto bail_regions;
                 }
-                else
+                else {
                         ipath_dbg("No 64bit DMA mask, used 32 bit mask\n");
+                        ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+                        if (ret)
+                                dev_info(&pdev->dev,
+                                        "Unable to set DMA consistent mask "
+                                        "for unit %u: %d\n",
+                                        dd->ipath_unit, ret);
+
+                }
+        }
+        else {
+                ret = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
+                if (ret)
+                        dev_info(&pdev->dev,
+                                "Unable to set DMA consistent mask "
+                                "for unit %u: %d\n",
+                                dd->ipath_unit, ret);
         }
 
         pci_set_master(pdev);