Merge branch 'drivers-net-update-tasklet_init-callers'

Emil Renner Berthing says:

====================
drivers: net: update tasklet_init callers

This updates the remaining callers of tasklet_init() in drivers/net
to the new API introduced in
commit 12cc923f ("tasklet: Introduce new initialization API")

All changes are done by coccinelle using the following semantic patch.
Coccinelle needs a little help parsing drivers/net/arcnet/arcnet.c

@ match @
type T;
T *container;
identifier tasklet;
identifier callback;
@@
	tasklet_init(&container->tasklet, callback, (unsigned long)container);

@ patch1 depends on match @
type match.T;
identifier match.tasklet;
identifier match.callback;
identifier data;
identifier container;
@@
-void callback(unsigned long data)
+void callback(struct tasklet_struct *t)
{
	...
-	T *container = (T *)data;
+	T *container = from_tasklet(container, t, tasklet);
	...
}

@ patch2 depends on match @
type match.T;
identifier match.tasklet;
identifier match.callback;
identifier data;
identifier container;
@@
-void callback(unsigned long data)
+void callback(struct tasklet_struct *t)
{
	...
-	T *container;
+	T *container = from_tasklet(container, t, tasklet);
	...
-	container = (T *)data;
	...
}

@ depends on (patch1 || patch2) @
match.T *container;
identifier match.tasklet;
identifier match.callback;
@@
-	tasklet_init(&container->tasklet, callback, (unsigned long)container);
+	tasklet_setup(&container->tasklet, callback);
====================

Link: https://lore.kernel.org/r/20210130234730.26565-1-kernel@esmil.dkSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/arcnet/arcnet.c

@@ -427,9 +427,9 @@ static void reset_device_work(struct work_struct *work)
 	rtnl_unlock();
 }
 
-static void arcnet_reply_tasklet(unsigned long data)
+static void arcnet_reply_tasklet(struct tasklet_struct *t)
 {
-	struct arcnet_local *lp = (struct arcnet_local *)data;
+	struct arcnet_local *lp = from_tasklet(lp, t, reply_tasklet);
 
 	struct sk_buff *ackskb, *skb;
 	struct sock_exterr_skb *serr;
@@ -530,8 +530,7 @@ int arcnet_open(struct net_device *dev)
 		arc_cont(D_PROTO, "\n");
 	}
 
-	tasklet_init(&lp->reply_tasklet, arcnet_reply_tasklet,
-		     (unsigned long)lp);
+	tasklet_setup(&lp->reply_tasklet, arcnet_reply_tasklet);
 
 	arc_printk(D_INIT, dev, "arcnet_open: resetting card.\n");
 

drivers/net/caif/caif_virtio.c

@@ -598,9 +598,9 @@ static netdev_tx_t cfv_netdev_tx(struct sk_buff *skb, struct net_device *netdev)
 	return NETDEV_TX_OK;
 }
 
-static void cfv_tx_release_tasklet(unsigned long drv)
+static void cfv_tx_release_tasklet(struct tasklet_struct *t)
 {
-	struct cfv_info *cfv = (struct cfv_info *)drv;
+	struct cfv_info *cfv = from_tasklet(cfv, t, tx_release_tasklet);
 	cfv_release_used_buf(cfv->vq_tx);
 }
 
@@ -716,9 +716,7 @@ static int cfv_probe(struct virtio_device *vdev)
 	cfv->ctx.head = USHRT_MAX;
 	netif_napi_add(netdev, &cfv->napi, cfv_rx_poll, CFV_DEFAULT_QUOTA);
 
-	tasklet_init(&cfv->tx_release_tasklet,
-		     cfv_tx_release_tasklet,
-		     (unsigned long)cfv);
+	tasklet_setup(&cfv->tx_release_tasklet, cfv_tx_release_tasklet);
 
 	/* Carrier is off until netdevice is opened */
 	netif_carrier_off(netdev);

drivers/net/ifb.c

@@ -59,9 +59,9 @@ static netdev_tx_t ifb_xmit(struct sk_buff *skb, struct net_device *dev);
 static int ifb_open(struct net_device *dev);
 static int ifb_close(struct net_device *dev);
 
-static void ifb_ri_tasklet(unsigned long _txp)
+static void ifb_ri_tasklet(struct tasklet_struct *t)
 {
-	struct ifb_q_private *txp = (struct ifb_q_private *)_txp;
+	struct ifb_q_private *txp = from_tasklet(txp, t, ifb_tasklet);
 	struct netdev_queue *txq;
 	struct sk_buff *skb;
 
@@ -170,8 +170,7 @@ static int ifb_dev_init(struct net_device *dev)
 		__skb_queue_head_init(&txp->tq);
 		u64_stats_init(&txp->rsync);
 		u64_stats_init(&txp->tsync);
-		tasklet_init(&txp->ifb_tasklet, ifb_ri_tasklet,
-			     (unsigned long)txp);
+		tasklet_setup(&txp->ifb_tasklet, ifb_ri_tasklet);
 		netif_tx_start_queue(netdev_get_tx_queue(dev, i));
 	}
 	return 0;

drivers/net/ppp/ppp_async.c

@@ -101,7 +101,7 @@ static void ppp_async_input(struct asyncppp *ap, const unsigned char *buf,
 			    char *flags, int count);
 static int ppp_async_ioctl(struct ppp_channel *chan, unsigned int cmd,
 			   unsigned long arg);
-static void ppp_async_process(unsigned long arg);
+static void ppp_async_process(struct tasklet_struct *t);
 
 static void async_lcp_peek(struct asyncppp *ap, unsigned char *data,
 			   int len, int inbound);
@@ -179,7 +179,7 @@ ppp_asynctty_open(struct tty_struct *tty)
 	ap->lcp_fcs = -1;
 
 	skb_queue_head_init(&ap->rqueue);
-	tasklet_init(&ap->tsk, ppp_async_process, (unsigned long) ap);
+	tasklet_setup(&ap->tsk, ppp_async_process);
 
 	refcount_set(&ap->refcnt, 1);
 	init_completion(&ap->dead);
@@ -488,9 +488,9 @@ ppp_async_ioctl(struct ppp_channel *chan, unsigned int cmd, unsigned long arg)
  * to the ppp_generic code, and to tell the ppp_generic code
  * if we can accept more output now.
  */
-static void ppp_async_process(unsigned long arg)
+static void ppp_async_process(struct tasklet_struct *t)
 {
-	struct asyncppp *ap = (struct asyncppp *) arg;
+	struct asyncppp *ap = from_tasklet(ap, t, tsk);
 	struct sk_buff *skb;
 
 	/* process received packets */

drivers/net/ppp/ppp_synctty.c

@@ -90,7 +90,7 @@ static struct sk_buff* ppp_sync_txmunge(struct syncppp *ap, struct sk_buff *);
 static int ppp_sync_send(struct ppp_channel *chan, struct sk_buff *skb);
 static int ppp_sync_ioctl(struct ppp_channel *chan, unsigned int cmd,
 			  unsigned long arg);
-static void ppp_sync_process(unsigned long arg);
+static void ppp_sync_process(struct tasklet_struct *t);
 static int ppp_sync_push(struct syncppp *ap);
 static void ppp_sync_flush_output(struct syncppp *ap);
 static void ppp_sync_input(struct syncppp *ap, const unsigned char *buf,
@@ -177,7 +177,7 @@ ppp_sync_open(struct tty_struct *tty)
 	ap->raccm = ~0U;
 
 	skb_queue_head_init(&ap->rqueue);
-	tasklet_init(&ap->tsk, ppp_sync_process, (unsigned long) ap);
+	tasklet_setup(&ap->tsk, ppp_sync_process);
 
 	refcount_set(&ap->refcnt, 1);
 	init_completion(&ap->dead_cmp);
@@ -480,9 +480,9 @@ ppp_sync_ioctl(struct ppp_channel *chan, unsigned int cmd, unsigned long arg)
  * to the ppp_generic code, and to tell the ppp_generic code
  * if we can accept more output now.
  */
-static void ppp_sync_process(unsigned long arg)
+static void ppp_sync_process(struct tasklet_struct *t)
 {
-	struct syncppp *ap = (struct syncppp *) arg;
+	struct syncppp *ap = from_tasklet(ap, t, tsk);
 	struct sk_buff *skb;
 
 	/* process received packets */

drivers/net/usb/hso.c

@@ -1213,9 +1213,10 @@ static void hso_std_serial_read_bulk_callback(struct urb *urb)
  * This needs to be a tasklet otherwise we will
  * end up recursively calling this function.
  */
-static void hso_unthrottle_tasklet(unsigned long data)
+static void hso_unthrottle_tasklet(struct tasklet_struct *t)
 {
-	struct hso_serial *serial = (struct hso_serial *)data;
+	struct hso_serial *serial = from_tasklet(serial, t,
+						 unthrottle_tasklet);
 	unsigned long flags;
 
 	spin_lock_irqsave(&serial->serial_lock, flags);
@@ -1264,9 +1265,8 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp)
 		serial->rx_state = RX_IDLE;
 		/* Force default termio settings */
 		_hso_serial_set_termios(tty, NULL);
-		tasklet_init(&serial->unthrottle_tasklet,
-			     hso_unthrottle_tasklet,
-			     (unsigned long)serial);
+		tasklet_setup(&serial->unthrottle_tasklet,
+			      hso_unthrottle_tasklet);
 		result = hso_start_serial_device(serial->parent, GFP_KERNEL);
 		if (result) {
 			hso_stop_serial_device(serial->parent);

drivers/net/usb/lan78xx.c

@@ -3375,9 +3375,9 @@ static void lan78xx_rx_bh(struct lan78xx_net *dev)
 		netif_wake_queue(dev->net);
 }
 
-static void lan78xx_bh(unsigned long param)
+static void lan78xx_bh(struct tasklet_struct *t)
 {
-	struct lan78xx_net *dev = (struct lan78xx_net *)param;
+	struct lan78xx_net *dev = from_tasklet(dev, t, bh);
 	struct sk_buff *skb;
 	struct skb_data *entry;
 
@@ -3655,7 +3655,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 	skb_queue_head_init(&dev->txq_pend);
 	mutex_init(&dev->phy_mutex);
 
-	tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev);
+	tasklet_setup(&dev->bh, lan78xx_bh);
 	INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork);
 	init_usb_anchor(&dev->deferred);
 

drivers/net/usb/pegasus.c

@@ -553,12 +553,11 @@ static void read_bulk_callback(struct urb *urb)
 	tasklet_schedule(&pegasus->rx_tl);
 }
 
-static void rx_fixup(unsigned long data)
+static void rx_fixup(struct tasklet_struct *t)
 {
-	pegasus_t *pegasus;
+	pegasus_t *pegasus = from_tasklet(pegasus, t, rx_tl);
 	int status;
 
-	pegasus = (pegasus_t *) data;
 	if (pegasus->flags & PEGASUS_UNPLUG)
 		return;
 
@@ -1129,7 +1128,7 @@ static int pegasus_probe(struct usb_interface *intf,
 		goto out1;
 	}
 
-	tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
+	tasklet_setup(&pegasus->rx_tl, rx_fixup);
 
 	INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
 

drivers/net/usb/r8152.c

@@ -2393,11 +2393,9 @@ static void tx_bottom(struct r8152 *tp)
 	} while (res == 0);
 }
 
-static void bottom_half(unsigned long data)
+static void bottom_half(struct tasklet_struct *t)
 {
-	struct r8152 *tp;
-
-	tp = (struct r8152 *)data;
+	struct r8152 *tp = from_tasklet(tp, t, tx_tl);
 
 	if (test_bit(RTL8152_UNPLUG, &tp->flags))
 		return;
@@ -6714,7 +6712,7 @@ static int rtl8152_probe(struct usb_interface *intf,
 	mutex_init(&tp->control);
 	INIT_DELAYED_WORK(&tp->schedule, rtl_work_func_t);
 	INIT_DELAYED_WORK(&tp->hw_phy_work, rtl_hw_phy_work_func_t);
-	tasklet_init(&tp->tx_tl, bottom_half, (unsigned long)tp);
+	tasklet_setup(&tp->tx_tl, bottom_half);
 	tasklet_disable(&tp->tx_tl);
 
 	netdev->netdev_ops = &rtl8152_netdev_ops;

drivers/net/usb/rtl8150.c

@@ -577,9 +577,9 @@ static void free_skb_pool(rtl8150_t *dev)
 		dev_kfree_skb(dev->rx_skb_pool[i]);
 }
 
-static void rx_fixup(unsigned long data)
+static void rx_fixup(struct tasklet_struct *t)
 {
-	struct rtl8150 *dev = (struct rtl8150 *)data;
+	struct rtl8150 *dev = from_tasklet(dev, t, tl);
 	struct sk_buff *skb;
 	int status;
 
@@ -878,7 +878,7 @@ static int rtl8150_probe(struct usb_interface *intf,
 		return -ENOMEM;
 	}
 
-	tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
+	tasklet_setup(&dev->tl, rx_fixup);
 	spin_lock_init(&dev->rx_pool_lock);
 
 	dev->udev = udev;