IB/qib: Fix M_Key field in SubnGet and SubnGetResp MADs

Set the M_Key field in SubnGet and SugnGetResp MADs based on correctly
interpreting the protection level specified in the M_KeyProtBits field.

Signed-off-by: Mitko Haralanov <mitko@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c
index 4b9e11cc561b..8fd3df5bf04d 100644
--- a/drivers/infiniband/hw/qib/qib_mad.c
+++ b/drivers/infiniband/hw/qib/qib_mad.c
@@ -464,8 +464,9 @@ static int subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev,
         memset(smp->data, 0, sizeof(smp->data));
 
         /* Only return the mkey if the protection field allows it. */
-        if (smp->method == IB_MGMT_METHOD_SET || ibp->mkey == smp->mkey ||
-            ibp->mkeyprot == 0)
+        if (!(smp->method == IB_MGMT_METHOD_GET &&
+              ibp->mkey != smp->mkey &&
+              ibp->mkeyprot == 1))
                 pip->mkey = ibp->mkey;
         pip->gid_prefix = ibp->gid_prefix;
         lid = ppd->lid;