tree 3c580a585976bac22f248f2f74a7c3c34b6f4536
parent cf1a4cf8754afb248e498815c7957aeb4faca79f
author Anton Blanchard <anton@samba.org> 1338828423 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1346978731 +1000

powerpc/pseries: Round up MSI-X requests

The pseries firmware currently refuses any non power of two MSI-X
request. Unfortunately most network drivers end up asking for that
because they want a power of two for RX queues and one or two extra
for everything else.

This patch rounds up the firmware request to the next power of two
if the quota allows it. If this fails we fall back to using the
original request size.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>