[PATCH v2 2/3] powerpc: setup default archdata for {of_}platform via bus_register_notifier

[Benjamin Krill]

* Kumar Gala | 2009-03-19 08:40:51 [-0500]:

>Since a number of powerpc chips are SoCs we end up having dma-able
>devices that are registered as platform or of_platform devices.  We need
>to hook the archdata to setup proper dma_ops for these devices.
>
>Rather than having to add a bus_notify to each platform we add a default
>one at the highest priority (called first) to set the default dma_ops for
>of_platform and platform devices to dma_direct_ops.  This allows platform
>code to override the ops by providing their own notifier call back.
>
>In the future to enable >4G DMA support on ppc32 we can hook swiotlb ops.
>
>Signed-off-by: Kumar Gala <galak at kernel.crashing.org>

Acked-by: Benjamin Krill <ben at codiert.org>

Tested on QPACE node card.