Without this change drivers, such as ibmvscsi, fail to load with the
previous change.
---
arch/powerpc/kernel/vio.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 3c3083f..e8d73de 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -1259,6 +1259,9 @@ struct vio_dev *vio_register_device_node(struct
device_node *of_node)
viodev->dev.parent = &vio_bus_device.dev;
viodev->dev.bus = &vio_bus_type;
viodev->dev.release = vio_dev_release;
+ /* needed to ensure proper operation of coherent allocations
+ * later, in case driver doesn't set it explicitly */
+ dma_set_coherent_mask(&viodev->dev, DMA_BIT_MASK(64));
/* register with generic device framework */
if (device_register(&viodev->dev)) {
--
1.7.0.4
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