From: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Date: Thu, 26 Nov 2020 00:04:28 +0000 (-0600)
Subject: ibmvnic: delay next reset if hard reset fails
X-Git-Tag: v5.9.15~88
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e68f59be3e68fca421079577031c9ffce3834d9b;p=thirdparty%2Fkernel%2Fstable.git

ibmvnic: delay next reset if hard reset fails

[ Upstream commit f15fde9d47b887b406f5e76490d601cfc26643c9 ]

If auto-priority failover is enabled, the backing device needs time
to settle if hard resetting fails for any reason. Add a delay of 60
seconds before retrying the hard-reset.

Fixes: 2770a7984db5 ("ibmvnic: Introduce hard reset recovery")
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index f892cb4a08f4e..006670f318bf1 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -2243,6 +2243,14 @@ static void __ibmvnic_reset(struct work_struct *work)
 				rc = do_hard_reset(adapter, rwi, reset_state);
 				rtnl_unlock();
 			}
+			if (rc) {
+				/* give backing device time to settle down */
+				netdev_dbg(adapter->netdev,
+					   "[S:%d] Hard reset failed, waiting 60 secs\n",
+					   adapter->state);
+				set_current_state(TASK_UNINTERRUPTIBLE);
+				schedule_timeout(60 * HZ);
+			}
 		} else if (!(rwi->reset_reason == VNIC_RESET_FATAL &&
 				adapter->from_passive_init)) {
 			rc = do_reset(adapter, rwi, reset_state);