add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/s390/net/ctcm_main.c
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@@ -569,8 +569,7 @@
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 	fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
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 	spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
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 	ch->prof.send_stamp = jiffies;
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-	rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx],
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-					(unsigned long)ch, 0xff, 0);
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+	rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx], 0, 0xff, 0);
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 	spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
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 	if (ccw_idx == 3)
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 		ch->prof.doios_single++;
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@@ -833,8 +832,7 @@
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 	spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
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 	ch->prof.send_stamp = jiffies;
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-	rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx],
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-					(unsigned long)ch, 0xff, 0);
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+	rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx], 0, 0xff, 0);
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 	spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
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 	if (ccw_idx == 3)
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 		ch->prof.doios_single++;
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@@ -867,16 +865,9 @@
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 /**
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  * Start transmission of a packet.
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  * Called from generic network device layer.
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- *
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- *  skb		Pointer to buffer containing the packet.
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- *  dev		Pointer to interface struct.
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- *
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- * returns 0 if packet consumed, !0 if packet rejected.
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- *         Note: If we return !0, then the packet is free'd by
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- *               the generic network layer.
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  */
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 /* first merge version - leaving both functions separated */
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-static int ctcm_tx(struct sk_buff *skb, struct net_device *dev)
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+static netdev_tx_t ctcm_tx(struct sk_buff *skb, struct net_device *dev)
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 {
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 	struct ctcm_priv *priv = dev->ml_priv;
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@@ -919,7 +910,7 @@
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 }
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 /* unmerged MPC variant of ctcm_tx */
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-static int ctcmpc_tx(struct sk_buff *skb, struct net_device *dev)
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+static netdev_tx_t ctcmpc_tx(struct sk_buff *skb, struct net_device *dev)
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 {
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 	int len = 0;
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 	struct ctcm_priv *priv = dev->ml_priv;
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@@ -1074,10 +1065,8 @@
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 		if (grp) {
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 			if (grp->fsm)
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 				kfree_fsm(grp->fsm);
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-			if (grp->xid_skb)
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-				dev_kfree_skb(grp->xid_skb);
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-			if (grp->rcvd_xid_skb)
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-				dev_kfree_skb(grp->rcvd_xid_skb);
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+			dev_kfree_skb(grp->xid_skb);
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+			dev_kfree_skb(grp->rcvd_xid_skb);
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 			tasklet_kill(&grp->mpc_tasklet2);
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 			kfree(grp);
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 			priv->mpcg = NULL;
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@@ -1702,43 +1691,6 @@
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 	put_device(&cgdev->dev);
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 }
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-static int ctcm_pm_suspend(struct ccwgroup_device *gdev)
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-{
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-	struct ctcm_priv *priv = dev_get_drvdata(&gdev->dev);
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-
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-	if (gdev->state == CCWGROUP_OFFLINE)
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-		return 0;
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-	netif_device_detach(priv->channel[CTCM_READ]->netdev);
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-	ctcm_close(priv->channel[CTCM_READ]->netdev);
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-	if (!wait_event_timeout(priv->fsm->wait_q,
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-	    fsm_getstate(priv->fsm) == DEV_STATE_STOPPED, CTCM_TIME_5_SEC)) {
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-		netif_device_attach(priv->channel[CTCM_READ]->netdev);
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-		return -EBUSY;
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-	}
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-	ccw_device_set_offline(gdev->cdev[1]);
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-	ccw_device_set_offline(gdev->cdev[0]);
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-	return 0;
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-}
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-
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-static int ctcm_pm_resume(struct ccwgroup_device *gdev)
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-{
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-	struct ctcm_priv *priv = dev_get_drvdata(&gdev->dev);
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-	int rc;
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-
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-	if (gdev->state == CCWGROUP_OFFLINE)
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-		return 0;
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-	rc = ccw_device_set_online(gdev->cdev[1]);
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-	if (rc)
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-		goto err_out;
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-	rc = ccw_device_set_online(gdev->cdev[0]);
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-	if (rc)
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-		goto err_out;
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-	ctcm_open(priv->channel[CTCM_READ]->netdev);
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-err_out:
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-	netif_device_attach(priv->channel[CTCM_READ]->netdev);
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-	return rc;
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-}
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-
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 static struct ccw_device_id ctcm_ids[] = {
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 	{CCW_DEVICE(0x3088, 0x08), .driver_info = ctcm_channel_type_parallel},
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 	{CCW_DEVICE(0x3088, 0x1e), .driver_info = ctcm_channel_type_ficon},
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@@ -1768,9 +1720,6 @@
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 	.remove      = ctcm_remove_device,
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 	.set_online  = ctcm_new_device,
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 	.set_offline = ctcm_shutdown_device,
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-	.freeze	     = ctcm_pm_suspend,
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-	.thaw	     = ctcm_pm_resume,
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-	.restore     = ctcm_pm_resume,
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 };
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 static ssize_t group_store(struct device_driver *ddrv, const char *buf,