Thread (7 messages) flat view 7 messages, 4 authors, 2021-04-12

Re: [PATCH] ibmvnic: Continue with reset if set link down failed

From: Lijun Pan <hidden>
Date: 2021-04-06 06:46:36

quoted hunk ↗ jump to hunk
On Apr 5, 2021, at 10:47 PM, Dany Madden [off-list ref] wrote:

When an adapter is going thru a reset, it maybe in an unstable state that
makes a request to set link down fail. In such a case, the adapter needs
to continue on with reset to bring itself back to a stable state.

Fixes: ed651a10875f ("ibmvnic: Updated reset handling")
Signed-off-by: Dany Madden <redacted>
---
drivers/net/ethernet/ibm/ibmvnic.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 9c6438d3b3a5..e4f01a7099a0 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -1976,8 +1976,10 @@ static int do_reset(struct ibmvnic_adapter *adapter,
			rtnl_unlock();
			rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN);
			rtnl_lock();
-			if (rc)
-				goto out;
+			if (rc) {
+				netdev_dbg(netdev,
+					   "Setting link down failed rc=%d. Continue anyway\n", rc);
+			}
What’s the point of checking the return code if it can be neglected anyway?
If we really don’t care if set_link_state succeeds or not, we don’t even need to call
set_link_state() here.
It seems more correct to me that we find out why set_link_state fails and fix it from that end.

Lijun
			if (adapter->state == VNIC_OPEN) {
				/* When we dropped rtnl, ibmvnic_open() got
-- 
2.26.2
  
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help