linux-kernel - [PATCH net 1/9] net/mlx5: fw reset, clear reset requested on drain_fw

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Message-ID: <1765284977-1363052-2-git-send-email-tariqt@nvidia.com>
Date: Tue, 9 Dec 2025 14:56:09 +0200
From: Tariq Toukan <tariqt@...dia.com>
To: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David
 S. Miller" <davem@...emloft.net>
CC: Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>,
	Tariq Toukan <tariqt@...dia.com>, Mark Bloch <mbloch@...dia.com>,
	<netdev@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Gal Pressman <gal@...dia.com>, Moshe Shemesh
	<moshe@...dia.com>, Breno Leitao <leitao@...ian.org>, Alexandre Cassen
	<acassen@...p.free.fr>
Subject: [PATCH net 1/9] net/mlx5: fw reset, clear reset requested on drain_fw_reset

From: Moshe Shemesh <moshe@...dia.com>

drain_fw_reset() waits for ongoing firmware reset events and blocks new
event handling, but does not clear the reset requested flag, and may
keep sync reset polling.

To fix it, call mlx5_sync_reset_clear_reset_requested() to clear the
flag, stop sync reset polling, and resume health polling, ensuring
health issues are still detected after the firmware reset drain.

Fixes: 16d42d313350 ("net/mlx5: Drain fw_reset when removing device")
Signed-off-by: Moshe Shemesh <moshe@...dia.com>
Reviewed-by: Shay Drori <shayd@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
index 2bceb42c98cc..b81de792c181 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
@@ -844,7 +844,8 @@ void mlx5_drain_fw_reset(struct mlx5_core_dev *dev)
 	cancel_work_sync(&fw_reset->reset_reload_work);
 	cancel_work_sync(&fw_reset->reset_now_work);
 	cancel_work_sync(&fw_reset->reset_abort_work);
-	cancel_delayed_work(&fw_reset->reset_timeout_work);
+	if (test_bit(MLX5_FW_RESET_FLAGS_RESET_REQUESTED, &fw_reset->reset_flags))
+		mlx5_sync_reset_clear_reset_requested(dev, true);
 }
 
 static const struct devlink_param mlx5_fw_reset_devlink_params[] = {
-- 
2.31.1