Avoid disabling device management for devices that don't support
Management datagrams (MADs) by checking if the "mad_agent" pointer is
initialized before calling ib_modify_port, also change the error message
to a warning and make it more informative.
Fixes: 09f8a1486dca ("RDMA/srpt: Fix handling of SR-IOV and iWARP ports")
Signed-off-by: Kamal Heib <kamalheib1@xxxxxxxxx>
---
drivers/infiniband/ulp/srpt/ib_srpt.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 7ed38d1cb997..7b21792ab6f7 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -625,14 +625,18 @@ static void srpt_unregister_mad_agent(struct srpt_device *sdev)
.clr_port_cap_mask = IB_PORT_DEVICE_MGMT_SUP,
};
struct srpt_port *sport;
+ int ret;
int i;
for (i = 1; i <= sdev->device->phys_port_cnt; i++) {
sport = &sdev->port[i - 1];
WARN_ON(sport->port != i);
- if (ib_modify_port(sdev->device, i, 0, &port_modify) < 0)
- pr_err("disabling MAD processing failed.\n");
if (sport->mad_agent) {
+ ret = ib_modify_port(sdev->device, i, 0, &port_modify);
+ if (ret < 0)
+ pr_warn("%s-%d: disabling device management failed (%d). Note: this is expected if SR-IOV is enabled.\n",
+ dev_name(&sport->sdev->device->dev),
+ sport->port, ret);
ib_unregister_mad_agent(sport->mad_agent);
sport->mad_agent = NULL;
}
--
2.25.4
