IB/umad: Increase maximum devices supported
authorAlexander Chiang <achiang@hp.com>
Tue, 2 Feb 2010 19:08:45 +0000 (19:08 +0000)
committerRoland Dreier <rolandd@cisco.com>
Wed, 24 Feb 2010 18:23:45 +0000 (10:23 -0800)
commit8698d3feccda66fcb52748e7c7690bd1003f7849
tree5051fc53d2fdd046ab56c586c4c5b15108f143e0
parentdc2ed5e3c963490a4fe934b482537d1274961ecb
IB/umad: Increase maximum devices supported

Some large systems may support more than IB_UMAD_MAX_PORTS
(currently 64).

This change allows us to support more ports in a backwards-compatible
manner.  The first IB_UMAD_MAX_PORTS keep the same major/minor device
numbers they've always had.

If there are more than IB_UMAD_MAX_PORTS, we then dynamically request
a new major device number (new minors start at 0).

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/core/user_mad.c