diff options
| author | Or Gerlitz <ogerlitz@mellanox.com> | 2012-04-02 16:45:20 +0200 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-04-02 19:55:24 +0200 |
| commit | d2ef406866620f0450ad0b4c7fb5c2796c7bf245 (patch) | |
| tree | 0d44c40c7da3b28f4edfb371cf782ae3f0c5c4c1 /drivers/infiniband | |
| parent | Linux 3.4-rc1 (diff) | |
| download | linux-d2ef406866620f0450ad0b4c7fb5c2796c7bf245.tar.xz linux-d2ef406866620f0450ad0b4c7fb5c2796c7bf245.zip | |
IB/mlx4: Don't return an invalid speed when a port is down
When the IB port is down, the active_speed value returned by the
MAD_IFC command is seven (7) which isn't among the defined IB speeds
in enum ib_port_speed, and this invalid speed value is passed up to
higher layers or applications who do port query.
Fix that by setting the speed to be SDR -- the lowest possible -- when
the port is down.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/main.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index 75d305629300..669673e81439 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -253,6 +253,11 @@ static int ib_link_query_port(struct ib_device *ibdev, u8 port, if (out_mad->data[15] & 0x1) props->active_speed = IB_SPEED_FDR10; } + + /* Avoid wrong speed value returned by FW if the IB link is down. */ + if (props->state == IB_PORT_DOWN) + props->active_speed = IB_SPEED_SDR; + out: kfree(in_mad); kfree(out_mad); |