From: Roland Dreier Fix handling of MAD agent registrations with mgmt_class == 0. In this case ib_umad should pass a NULL registration request to the MAD core rather than a request with mgmt_class set to 0. Signed-off-by: Roland Dreier Signed-off-by: Andrew Morton --- 25-akpm/drivers/infiniband/core/user_mad.c | 14 ++++++++------ 1 files changed, 8 insertions(+), 6 deletions(-) diff -puN drivers/infiniband/core/user_mad.c~ib-fix-user-mad-registrations-with-class-0 drivers/infiniband/core/user_mad.c --- 25/drivers/infiniband/core/user_mad.c~ib-fix-user-mad-registrations-with-class-0 Fri Apr 1 13:53:41 2005 +++ 25-akpm/drivers/infiniband/core/user_mad.c Fri Apr 1 13:53:41 2005 @@ -389,15 +389,17 @@ static int ib_umad_reg_agent(struct ib_u goto out; found: - req.mgmt_class = ureq.mgmt_class; - req.mgmt_class_version = ureq.mgmt_class_version; - memcpy(req.method_mask, ureq.method_mask, sizeof req.method_mask); - memcpy(req.oui, ureq.oui, sizeof req.oui); + if (ureq.mgmt_class) { + req.mgmt_class = ureq.mgmt_class; + req.mgmt_class_version = ureq.mgmt_class_version; + memcpy(req.method_mask, ureq.method_mask, sizeof req.method_mask); + memcpy(req.oui, ureq.oui, sizeof req.oui); + } agent = ib_register_mad_agent(file->port->ib_dev, file->port->port_num, ureq.qpn ? IB_QPT_GSI : IB_QPT_SMI, - &req, 0, send_handler, recv_handler, - file); + ureq.mgmt_class ? &req : NULL, + 0, send_handler, recv_handler, file); if (IS_ERR(agent)) { ret = PTR_ERR(agent); goto out; _