linux-kernel - [PATCH] i40e: Fix error handling code of label err_set

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Message-Id: <20210713122028.463450-1-mudongliangabcd@gmail.com>
Date:   Tue, 13 Jul 2021 20:20:27 +0800
From:   Dongliang Mu <mudongliangabcd@...il.com>
To:     Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Dinghao Liu <dinghao.liu@....edu.cn>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        Shannon Nelson <shannon.nelson@...el.com>,
        Catherine Sullivan <catherine.sullivan@...el.com>
Cc:     Dongliang Mu <mudongliangabcd@...il.com>,
        intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] i40e: Fix error handling code of label err_set_queues

If i40e_up_complete fails in i40e_vsi_open, it goes to err_up_complete.
The label err_set_queues has an issue: if the else branch is executed,
there is no need to execute i40e_vsi_request_irq.

Fix this by adding a condition of i40e_vsi_free_irq.

Reported-by: Dongliang Mu (mudongliangabcd@...il.com)
Fixes: 9c04cfcd4aad ("i40e: Fix error handling in i40e_vsi_open")
Fixes: c22e3c6c7912 ("i40e: prep vsi_open logic for non-netdev cases")
Signed-off-by: Dongliang Mu <mudongliangabcd@...il.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 861e59a350bd..ae54468c7001 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -8720,7 +8720,8 @@ int i40e_vsi_open(struct i40e_vsi *vsi)
 err_up_complete:
 	i40e_down(vsi);
 err_set_queues:
-	i40e_vsi_free_irq(vsi);
+	if ((vsi->netdev) || (vsi->type == I40E_VSI_FDIR))
+		i40e_vsi_free_irq(vsi);
 err_setup_rx:
 	i40e_vsi_free_rx_resources(vsi);
 err_setup_tx:
-- 
2.25.1