net/mlx5: fw reset, clear reset requested on drain_fw_reset

[ Upstream commit 89a898d ]

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: 16d42d3 ("net/mlx5: Drain fw_reset when removing device")
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drori <shayd@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1765284977-1363052-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: mosheshemesh2

drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c

@@ -843,7 +843,8 @@ 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[] = {