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Date:   Mon, 17 Aug 2020 13:54:27 +0530
From:   Allen Pais <allen.lkml@...il.com>
To:     jes@...ined-monkey.org, davem@...emloft.net, kuba@...nel.org,
        kda@...ux-powerpc.org, dougmill@...ux.ibm.com,
        cooldavid@...ldavid.org, mlindner@...vell.com, borisp@...lanox.com
Cc:     keescook@...omium.org, linux-acenic@...site.dk,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, linux-rdma@...r.kernel.org,
        oss-drivers@...ronome.com, Allen Pais <allen.lkml@...il.com>,
        Romain Perier <romain.perier@...il.com>
Subject: [PATCH 13/20] ethernet: mellanox: convert tasklets to use new tasklet_setup() API

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.

Signed-off-by: Romain Perier <romain.perier@...il.com>
Signed-off-by: Allen Pais <allen.lkml@...il.com>
---
 drivers/net/ethernet/mellanox/mlx4/cq.c             |  4 ++--
 drivers/net/ethernet/mellanox/mlx4/eq.c             |  3 +--
 drivers/net/ethernet/mellanox/mlx4/mlx4.h           |  2 +-
 drivers/net/ethernet/mellanox/mlx5/core/cq.c        |  4 ++--
 drivers/net/ethernet/mellanox/mlx5/core/eq.c        |  3 +--
 drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c |  7 +++----
 drivers/net/ethernet/mellanox/mlx5/core/lib/eq.h    |  2 +-
 drivers/net/ethernet/mellanox/mlxsw/pci.c           | 12 ++++++------
 8 files changed, 17 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/cq.c b/drivers/net/ethernet/mellanox/mlx4/cq.c
index 65f8a4b6ed0c..3b8576b9c2f9 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cq.c
@@ -55,11 +55,11 @@
 #define TASKLET_MAX_TIME 2
 #define TASKLET_MAX_TIME_JIFFIES msecs_to_jiffies(TASKLET_MAX_TIME)
 
-void mlx4_cq_tasklet_cb(unsigned long data)
+void mlx4_cq_tasklet_cb(struct tasklet_struct *t)
 {
 	unsigned long flags;
 	unsigned long end = jiffies + TASKLET_MAX_TIME_JIFFIES;
-	struct mlx4_eq_tasklet *ctx = (struct mlx4_eq_tasklet *)data;
+	struct mlx4_eq_tasklet *ctx = from_tasklet(ctx, t, task);
 	struct mlx4_cq *mcq, *temp;
 
 	spin_lock_irqsave(&ctx->lock, flags);
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index ae305c2e9225..9e48509ed3b2 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -1057,8 +1057,7 @@ static int mlx4_create_eq(struct mlx4_dev *dev, int nent,
 	INIT_LIST_HEAD(&eq->tasklet_ctx.list);
 	INIT_LIST_HEAD(&eq->tasklet_ctx.process_list);
 	spin_lock_init(&eq->tasklet_ctx.lock);
-	tasklet_init(&eq->tasklet_ctx.task, mlx4_cq_tasklet_cb,
-		     (unsigned long)&eq->tasklet_ctx);
+	tasklet_setup(&eq->tasklet_ctx.task, mlx4_cq_tasklet_cb);
 
 	return err;
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index 527b52e48276..64bed7ac3836 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -1217,7 +1217,7 @@ void mlx4_cmd_use_polling(struct mlx4_dev *dev);
 int mlx4_comm_cmd(struct mlx4_dev *dev, u8 cmd, u16 param,
 		  u16 op, unsigned long timeout);
 
-void mlx4_cq_tasklet_cb(unsigned long data);
+void mlx4_cq_tasklet_cb(struct tasklet_struct *t);
 void mlx4_cq_completion(struct mlx4_dev *dev, u32 cqn);
 void mlx4_cq_event(struct mlx4_dev *dev, u32 cqn, int event_type);
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cq.c b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
index 8379b24cb838..df3e4938ecdd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
@@ -42,11 +42,11 @@
 #define TASKLET_MAX_TIME 2
 #define TASKLET_MAX_TIME_JIFFIES msecs_to_jiffies(TASKLET_MAX_TIME)
 
-void mlx5_cq_tasklet_cb(unsigned long data)
+void mlx5_cq_tasklet_cb(struct tasklet_struct *t)
 {
 	unsigned long flags;
 	unsigned long end = jiffies + TASKLET_MAX_TIME_JIFFIES;
-	struct mlx5_eq_tasklet *ctx = (struct mlx5_eq_tasklet *)data;
+	struct mlx5_eq_tasklet *ctx = from_tasklet(ctx, t, task);
 	struct mlx5_core_cq *mcq;
 	struct mlx5_core_cq *temp;
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index 31ef9f8420c8..ec38405d467f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -788,8 +788,7 @@ static int create_comp_eqs(struct mlx5_core_dev *dev)
 		INIT_LIST_HEAD(&eq->tasklet_ctx.list);
 		INIT_LIST_HEAD(&eq->tasklet_ctx.process_list);
 		spin_lock_init(&eq->tasklet_ctx.lock);
-		tasklet_init(&eq->tasklet_ctx.task, mlx5_cq_tasklet_cb,
-			     (unsigned long)&eq->tasklet_ctx);
+		tasklet_setup(&eq->tasklet_ctx.task, mlx5_cq_tasklet_cb);
 
 		eq->irq_nb.notifier_call = mlx5_eq_comp_int;
 		param = (struct mlx5_eq_param) {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c
index 831d2c39e153..9f6d97eae0ae 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c
@@ -388,9 +388,9 @@ static inline void mlx5_fpga_conn_cqes(struct mlx5_fpga_conn *conn,
 	mlx5_fpga_conn_arm_cq(conn);
 }
 
-static void mlx5_fpga_conn_cq_tasklet(unsigned long data)
+static void mlx5_fpga_conn_cq_tasklet(struct tasklet_struct *t)
 {
-	struct mlx5_fpga_conn *conn = (void *)data;
+	struct mlx5_fpga_conn *conn = from_tasklet(conn, t, cq.tasklet);
 
 	if (unlikely(!conn->qp.active))
 		return;
@@ -478,8 +478,7 @@ static int mlx5_fpga_conn_create_cq(struct mlx5_fpga_conn *conn, int cq_size)
 	conn->cq.mcq.comp       = mlx5_fpga_conn_cq_complete;
 	conn->cq.mcq.irqn       = irqn;
 	conn->cq.mcq.uar        = fdev->conn_res.uar;
-	tasklet_init(&conn->cq.tasklet, mlx5_fpga_conn_cq_tasklet,
-		     (unsigned long)conn);
+	tasklet_setup(&conn->cq.tasklet, mlx5_fpga_conn_cq_tasklet);
 
 	mlx5_fpga_dbg(fdev, "Created CQ #0x%x\n", conn->cq.mcq.cqn);
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/eq.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/eq.h
index 4aaca7400fb2..078a7cc29bf0 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/eq.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/eq.h
@@ -77,7 +77,7 @@ int mlx5_eq_add_cq(struct mlx5_eq *eq, struct mlx5_core_cq *cq);
 void mlx5_eq_del_cq(struct mlx5_eq *eq, struct mlx5_core_cq *cq);
 struct mlx5_eq_comp *mlx5_eqn2comp_eq(struct mlx5_core_dev *dev, int eqn);
 struct mlx5_eq *mlx5_get_async_eq(struct mlx5_core_dev *dev);
-void mlx5_cq_tasklet_cb(unsigned long data);
+void mlx5_cq_tasklet_cb(struct tasklet_struct *t);
 struct cpumask *mlx5_eq_comp_cpumask(struct mlx5_core_dev *dev, int ix);
 
 u32 mlx5_eq_poll_irq_disabled(struct mlx5_eq_comp *eq);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index 1c64b03ff48e..641cdd81882b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -620,9 +620,9 @@ static char *mlxsw_pci_cq_sw_cqe_get(struct mlxsw_pci_queue *q)
 	return elem;
 }
 
-static void mlxsw_pci_cq_tasklet(unsigned long data)
+static void mlxsw_pci_cq_tasklet(struct tasklet_struct *t)
 {
-	struct mlxsw_pci_queue *q = (struct mlxsw_pci_queue *) data;
+	struct mlxsw_pci_queue *q = from_tasklet(q, t, tasklet);
 	struct mlxsw_pci *mlxsw_pci = q->pci;
 	char *cqe;
 	int items = 0;
@@ -733,9 +733,9 @@ static char *mlxsw_pci_eq_sw_eqe_get(struct mlxsw_pci_queue *q)
 	return elem;
 }
 
-static void mlxsw_pci_eq_tasklet(unsigned long data)
+static void mlxsw_pci_eq_tasklet(struct tasklet_struct *t)
 {
-	struct mlxsw_pci_queue *q = (struct mlxsw_pci_queue *) data;
+	struct mlxsw_pci_queue *q = from_tasklet(q, t, tasklet);
 	struct mlxsw_pci *mlxsw_pci = q->pci;
 	u8 cq_count = mlxsw_pci_cq_count(mlxsw_pci);
 	unsigned long active_cqns[BITS_TO_LONGS(MLXSW_PCI_CQS_MAX)];
@@ -792,7 +792,7 @@ struct mlxsw_pci_queue_ops {
 		    struct mlxsw_pci_queue *q);
 	void (*fini)(struct mlxsw_pci *mlxsw_pci,
 		     struct mlxsw_pci_queue *q);
-	void (*tasklet)(unsigned long data);
+	void (*tasklet)(struct tasklet_struct *t);
 	u16 (*elem_count_f)(const struct mlxsw_pci_queue *q);
 	u8 (*elem_size_f)(const struct mlxsw_pci_queue *q);
 	u16 elem_count;
@@ -855,7 +855,7 @@ static int mlxsw_pci_queue_init(struct mlxsw_pci *mlxsw_pci, char *mbox,
 	q->pci = mlxsw_pci;
 
 	if (q_ops->tasklet)
-		tasklet_init(&q->tasklet, q_ops->tasklet, (unsigned long) q);
+		tasklet_setup(&q->tasklet, q_ops->tasklet);
 
 	mem_item->size = MLXSW_PCI_AQ_SIZE;
 	mem_item->buf = pci_alloc_consistent(mlxsw_pci->pdev,
-- 
2.17.1

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