netdev - [patch net-next v5 04/12] net/mlx5: Remove MLX5E_LOCKED

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Date:   Wed, 18 Jan 2023 16:21:07 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, michael.chan@...adcom.com,
        yisen.zhuang@...wei.com, salil.mehta@...wei.com,
        jesse.brandeburg@...el.com, anthony.l.nguyen@...el.com,
        tariqt@...dia.com, saeedm@...dia.com, leon@...nel.org,
        idosch@...dia.com, petrm@...dia.com, mailhol.vincent@...adoo.fr,
        jacob.e.keller@...el.com, gal@...dia.com
Subject: [patch net-next v5 04/12] net/mlx5: Remove MLX5E_LOCKED_FLOW flag

From: Jiri Pirko <jiri@...dia.com>

The MLX5E_LOCKED_FLOW flag is not checked anywhere now so remove it
entirely.

Signed-off-by: Jiri Pirko <jiri@...dia.com>
---
v4->v5:
- new patch
---
 drivers/net/ethernet/mellanox/mlx5/core/dev.c | 14 ++------------
 include/linux/mlx5/driver.h                   |  4 ----
 2 files changed, 2 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c
index 5b6b0b126e52..2b444fb12388 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/dev.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/dev.c
@@ -349,7 +349,6 @@ int mlx5_attach_device(struct mlx5_core_dev *dev)
 	devl_assert_locked(priv_to_devlink(dev));
 	mutex_lock(&mlx5_intf_mutex);
 	priv->flags &= ~MLX5_PRIV_FLAGS_DETACH;
-	priv->flags |= MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW;
 	for (i = 0; i < ARRAY_SIZE(mlx5_adev_devices); i++) {
 		if (!priv->adev[i]) {
 			bool is_supported = false;
@@ -397,7 +396,6 @@ int mlx5_attach_device(struct mlx5_core_dev *dev)
 			break;
 		}
 	}
-	priv->flags &= ~MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW;
 	mutex_unlock(&mlx5_intf_mutex);
 	return ret;
 }
@@ -412,7 +410,6 @@ void mlx5_detach_device(struct mlx5_core_dev *dev)
 
 	devl_assert_locked(priv_to_devlink(dev));
 	mutex_lock(&mlx5_intf_mutex);
-	priv->flags |= MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW;
 	for (i = ARRAY_SIZE(mlx5_adev_devices) - 1; i >= 0; i--) {
 		if (!priv->adev[i])
 			continue;
@@ -441,7 +438,6 @@ void mlx5_detach_device(struct mlx5_core_dev *dev)
 		del_adev(&priv->adev[i]->adev);
 		priv->adev[i] = NULL;
 	}
-	priv->flags &= ~MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW;
 	priv->flags |= MLX5_PRIV_FLAGS_DETACH;
 	mutex_unlock(&mlx5_intf_mutex);
 }
@@ -540,22 +536,16 @@ static void delete_drivers(struct mlx5_core_dev *dev)
 int mlx5_rescan_drivers_locked(struct mlx5_core_dev *dev)
 {
 	struct mlx5_priv *priv = &dev->priv;
-	int err = 0;
 
 	lockdep_assert_held(&mlx5_intf_mutex);
 	if (priv->flags & MLX5_PRIV_FLAGS_DETACH)
 		return 0;
 
-	priv->flags |= MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW;
 	delete_drivers(dev);
 	if (priv->flags & MLX5_PRIV_FLAGS_DISABLE_ALL_ADEV)
-		goto out;
-
-	err = add_drivers(dev);
+		return 0;
 
-out:
-	priv->flags &= ~MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW;
-	return err;
+	return add_drivers(dev);
 }
 
 bool mlx5_same_hw_devs(struct mlx5_core_dev *dev, struct mlx5_core_dev *peer_dev)
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index b957b8f22a6b..44167760ff29 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -554,10 +554,6 @@ enum {
 	 * creation/deletion on drivers rescan. Unset during device attach.
 	 */
 	MLX5_PRIV_FLAGS_DETACH = 1 << 2,
-	/* Distinguish between mlx5e_probe/remove called by module init/cleanup
-	 * and called by other flows which can already hold devlink lock
-	 */
-	MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW = 1 << 3,
 };
 
 struct mlx5_adev {
-- 
2.39.0