IB/mlx4: Diagnostic HW counters are not supported in slave mode
Modify the mlx4_ib_diag_counters() to avoid the following error in the
hypervisor when the slave tries to query the hardware counters in SR-IOV
mode.
mlx4_core 0000:81:00.0: Unknown command:0x30 accepted from slave:1
Fixes: 3f85f2aaabf7 ("IB/mlx4: Add diagnostic hardware counters")
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 2af44c2..87ba9bc 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2202,6 +2202,9 @@
bool per_port = !!(ibdev->dev->caps.flags2 &
MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
+ if (mlx4_is_slave(ibdev->dev))
+ return 0;
+
for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
/* i == 1 means we are building port counters */
if (i && !per_port)