IB/ipath: Shared context code needs to be sure device is usable

The code was checking if units are present, but not that present units
were usable (link up, etc.)

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 7e025c8e01b6..219b62d32eed 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1760,7 +1760,7 @@ static int find_shared_port(struct file *fp,
         for (ndev = 0; ndev < devmax; ndev++) {
                 struct ipath_devdata *dd = ipath_lookup(ndev);
 
-                if (!dd)
+                if (!usable(dd))
                         continue;
                 for (i = 1; i < dd->ipath_cfgports; i++) {
                         struct ipath_portdata *pd = dd->ipath_pd[i];