IB: increase DMA max_segment_size on Mellanox hardware

Commit Message

David Dillow Jan. 17, 2011, 2:09 a.m. UTC

None

Patch

diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index 5eee666..deb79d4 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -1043,6 +1043,9 @@  static int __mthca_init_one(struct pci_dev *pdev, int hca_type)
 		}
 	}
 
+	/* not a HW limit, but no way to say infinity */
+	dma_set_max_seg_size(&pdev->dev, 2 * 1024 * 1024 * 1024);
+
 	mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev);
 	if (!mdev) {
 		dev_err(&pdev->dev, "Device struct alloc failed, "
diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index 782f11d..699852e 100644
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -1109,6 +1109,9 @@  static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		}
 	}
 
+	/* not a HW limit, but no way to say infinity */
+	dma_set_max_seg_size(&pdev->dev, 2 * 1024 * 1024 * 1024);
+
 	priv = kzalloc(sizeof *priv, GFP_KERNEL);
 	if (!priv) {
 		dev_err(&pdev->dev, "Device struct alloc failed, "