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powerpc: Revert c6102609 and replace it with the correct fix for vio dma mask setting

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This patch reverts my previous "fix", and replace it with the correct
fix from Russell.

And as Russell pointed out -- dma_set_mask_and_coherent() (and the other
dma_set_mask() functions) are really supposed to be used by drivers
only.

Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Li Zhong 2013-11-28 17:22:25 +08:00 committed by Benjamin Herrenschmidt
parent 847443774b
commit 10862a0c71
1 changed files with 2 additions and 1 deletions
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arch/powerpc/kernel/vio.c
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@ -1432,7 +1432,8 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
/* needed to ensure proper operation of coherent allocations
* later, in case driver doesn't set it explicitly */
dma_coerce_mask_and_coherent(&viodev->dev, DMA_BIT_MASK(64));
viodev->dev.coherent_dma_mask = DMA_BIT_MASK(64);
viodev->dev.dma_mask = &viodev->dev.coherent_dma_mask;
}
/* register with generic device framework */