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| author |   Nishanth Aravamudan <nacc@us.ibm.com> | 2010-10-18 07:27:04 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-12-09 15:17:50 +1100 |
| commit | b3c73856ae47d43d0d181f9de1c1c6c0820c4515 (patch) | |
| tree | e7528ed3ed14b57f5861edb528c86adb1c66c393 /arch/powerpc/kernel/vio.c | |
| parent | Merge remote branch 'jwb/next' into next (diff) | |
| download | linux-dev-b3c73856ae47d43d0d181f9de1c1c6c0820c4515.tar.xz linux-dev-b3c73856ae47d43d0d181f9de1c1c6c0820c4515.zip | |
powerpc/iommu: Use coherent_dma_mask for alloc_coherent
The IOMMU code has been passing the dma-mask instead of the
coherent_dma_mask to the iommu allocator. Coherent allocations should
be made using the coherent_dma_mask.
Also update the vio code to ensure the coherent_dma_mask is set. Without
this change drivers, such as ibmvscsi, fail to load with the corrected
dma_iommu_alloc_coherent().
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/vio.c')
| -rw-r--r-- | arch/powerpc/kernel/vio.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index b2654058f2e4..1b695fdc362b 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -1257,6 +1257,10 @@ 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_mask(&viodev->dev, DMA_BIT_MASK(64)); + dma_set_coherent_mask(&viodev->dev, DMA_BIT_MASK(64)); /* register with generic device framework */ if (device_register(&viodev->dev)) { |