netdev - [PATCH net-queue] iavf: schedule watchdog immediately when changing primary MAC

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Message-Id: <20230110080018.2838769-1-sassmann@redhat.com>
Date:   Tue, 10 Jan 2023 09:00:18 +0100
From:   Stefan Assmann <sassmann@...hat.com>
To:     intel-wired-lan@...ts.osuosl.org
Cc:     netdev@...r.kernel.org, anthony.l.nguyen@...el.com,
        patryk.piotrowski@...el.com, sassmann@...nic.de
Subject: [PATCH net-queue] iavf: schedule watchdog immediately when changing primary MAC

From: Stefan Assmann <sassmann@...nic.de>

iavf_replace_primary_mac() utilizes queue_work() to schedule the
watchdog task but that only ensures that the watchdog task is queued
to run. To make sure the watchdog is executed asap use
mod_delayed_work().

Without this patch it may take up to 2s until the watchdog task gets
executed, which may cause long delays when setting the MAC address.

Fixes: a3e839d539e0 ("iavf: Add usage of new virtchnl format to set default MAC")
Signed-off-by: Stefan Assmann <sassmann@...nic.de>
---
Depends on net-queue patch
ca7facb6602f iavf: fix temporary deadlock and failure to set MAC address

 drivers/net/ethernet/intel/iavf/iavf_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index fff06f876c2c..1d3aa740caea 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -1033,7 +1033,7 @@ int iavf_replace_primary_mac(struct iavf_adapter *adapter,
 
 	/* schedule the watchdog task to immediately process the request */
 	if (f) {
-		queue_work(adapter->wq, &adapter->watchdog_task.work);
+		mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 		return 0;
 	}
 	return -ENOMEM;
-- 
2.38.1