netdev - [PATCH net 03/10] iavf: free q_vectors before queues in iavf_disable

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Message-Id: <20211115235934.880882-4-anthony.l.nguyen@intel.com>
Date:   Mon, 15 Nov 2021 15:59:27 -0800
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     Nicholas Nunley <nicholas.d.nunley@...el.com>,
        netdev@...r.kernel.org, anthony.l.nguyen@...el.com,
        sassmann@...hat.com, Tony Brelinski <tony.brelinski@...el.com>
Subject: [PATCH net 03/10] iavf: free q_vectors before queues in iavf_disable_vf

From: Nicholas Nunley <nicholas.d.nunley@...el.com>

iavf_free_queues() clears adapter->num_active_queues, which
iavf_free_q_vectors() relies on, so swap the order of these two function
calls in iavf_disable_vf(). This resolves a panic encountered when the
interface is disabled and then later brought up again after PF
communication is restored.

Fixes: 65c7006f234c ("i40evf: assign num_active_queues inside i40evf_alloc_queues")
Signed-off-by: Nicholas Nunley <nicholas.d.nunley@...el.com>
Tested-by: Tony Brelinski <tony.brelinski@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 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 561171507cda..c23fff5a4bd9 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -2123,8 +2123,8 @@ static void iavf_disable_vf(struct iavf_adapter *adapter)
 
 	iavf_free_misc_irq(adapter);
 	iavf_reset_interrupt_capability(adapter);
-	iavf_free_queues(adapter);
 	iavf_free_q_vectors(adapter);
+	iavf_free_queues(adapter);
 	memset(adapter->vf_res, 0, IAVF_VIRTCHNL_VF_RESOURCE_SIZE);
 	iavf_shutdown_adminq(&adapter->hw);
 	adapter->netdev->flags &= ~IFF_UP;
-- 
2.31.1