tree b32c0e3c4143781e81fffcdc02cdd38a1a5279d9
parent f4b9a988685da6386d7f9a72df3098bcc3270526
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1249886198 +1000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1249886198 +1000

powerpc/dma: pci_set_dma_mask() shouldn't fail if mask fits in RAM

On an iMac G5, the b43 driver is failing to initialise because trying to
set the dma mask to 30-bit fails. Even though there's only 512MiB of RAM
in the machine anyway:
	https://bugzilla.redhat.com/show_bug.cgi?id=514787

We should probably let it succeed if the available RAM in the system
doesn't exceed the requested limit.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>