[PATCH] Stop pci_set_dma_mask() from failing when RAM doesn't exceed the mask anyway

[Benjamin Herrenschmidt]

On Mon, 2009-08-03 at 14:14 +0100, David Woodhouse wrote:

> Do we care about that scenario? I think we might be able to "fix" it by
> setting the memory_limit when we allow pci_set_dma_mask() to succeed?
> That will effectively prevent the addition of memory that our crappy
> device can't reach, won't it?

We don't support hotplug memory on those machines anyway, do we ?

Cheers,
Ben.