From: Roland Dreier <[EMAIL PROTECTED]>

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 <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---

 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
    2005-04-12 03:21:41.957758352 -0700
+++ 25-akpm/drivers/infiniband/core/user_mad.c  2005-04-12 03:21:41.960757896 
-0700
@@ -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;
_
-
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