[PATCH 5.10 34/67] i40e: Fix firmware LLDP agent related warning

[Greg Kroah-Hartman]

From: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx>

[ Upstream commit 71d6fdba4b2d82fdd883fec31dee77fbcf59773a ]

Make warning meaningful for the user.

Previously the trace:
"Starting FW LLDP agent failed: error: I40E_ERR_ADMIN_QUEUE_ERROR, I40E_AQ_RC_EAGAIN"
was produced when user tried to start Firmware LLDP agent,
just after it was stopped with sequence:
ethtool --set-priv-flags <dev> disable-fw-lldp on
ethtool --set-priv-flags <dev> disable-fw-lldp off
(without any delay between the commands)
At that point the firmware is still processing stop command, the behavior
is expected.

Fixes: c1041d070437 ("i40e: Missing response checks in driver when starting/stopping FW LLDP")
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx>
Tested-by: Imam Hassan Reza Biswas <imam.hassan.reza.biswas@xxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 874073f7f024..a952ae07d253 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -5106,6 +5106,10 @@ flags_complete:
 					dev_warn(&pf->pdev->dev,
 						 "Device configuration forbids SW from starting the LLDP agent.\n");
 					return -EINVAL;
+				case I40E_AQ_RC_EAGAIN:
+					dev_warn(&pf->pdev->dev,
+						 "Stop FW LLDP agent command is still being processed, please try again in a second.\n");
+					return -EBUSY;
 				default:
 					dev_warn(&pf->pdev->dev,
 						 "Starting FW LLDP agent failed: error: %s, %s\n",
-- 
2.30.2