[Intel-wired-lan] [PATCH iwl-net 1/2] iavf: fix reset in early states

[Ahmed Zaki]

The iavf_reset_task() assumes that the adapter has finished the
initialization cycle and is either in __IAVF_DOWN or __IAVF_RUNNING.

At the early states, no resources have been allocated. Allow an early reset
by simply shutting down the admin queue and reverting to the first state
__IAVF_STARTUP.

Fixes: 5eae00c57f5e ("i40evf: main driver core")
Reviewed-by: Tony Nguyen <anthony.l.nguyen at intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki at intel.com>
---
 drivers/net/ethernet/intel/iavf/iavf_main.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index 335fd13e86f7..e1569035d5d0 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -3037,6 +3037,17 @@ static void iavf_reset_task(struct work_struct *work)
 	}
 
 continue_reset:
+	/* If we are still early in the state machine, just restart. */
+	if (adapter->state <= __IAVF_INIT_FAILED) {
+		iavf_shutdown_adminq(hw);
+		iavf_change_state(adapter, __IAVF_STARTUP);
+		iavf_startup(adapter);
+		mutex_unlock(&adapter->crit_lock);
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
+				   msecs_to_jiffies(30));
+		return;
+	}
+
 	/* We don't use netif_running() because it may be true prior to
 	 * ndo_open() returning, so we can't assume it means all our open
 	 * tasks have finished, since we're not holding the rtnl_lock here.
-- 
2.34.1