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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/s390/net/smsgiucv.c
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@@ -29,12 +29,9 @@
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 MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver");
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 static struct iucv_path *smsg_path;
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-/* dummy device used as trigger for PM functions */
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-static struct device *smsg_dev;
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 static DEFINE_SPINLOCK(smsg_list_lock);
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 static LIST_HEAD(smsg_list);
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-static int iucv_path_connected;
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 static int smsg_path_pending(struct iucv_path *, u8 *, u8 *);
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 static void smsg_message_pending(struct iucv_path *, struct iucv_message *);
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@@ -124,60 +121,15 @@
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 	kfree(cb);
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 }
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-static int smsg_pm_freeze(struct device *dev)
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-{
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-#ifdef CONFIG_PM_DEBUG
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-	printk(KERN_WARNING "smsg_pm_freeze\n");
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-#endif
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-	if (smsg_path && iucv_path_connected) {
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-		iucv_path_sever(smsg_path, NULL);
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-		iucv_path_connected = 0;
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-	}
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-	return 0;
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-}
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-
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-static int smsg_pm_restore_thaw(struct device *dev)
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-{
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-	int rc;
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-
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-#ifdef CONFIG_PM_DEBUG
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-	printk(KERN_WARNING "smsg_pm_restore_thaw\n");
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-#endif
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-	if (smsg_path && !iucv_path_connected) {
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-		memset(smsg_path, 0, sizeof(*smsg_path));
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-		smsg_path->msglim = 255;
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-		smsg_path->flags = 0;
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-		rc = iucv_path_connect(smsg_path, &smsg_handler, "*MSG    ",
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-				       NULL, NULL, NULL);
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-#ifdef CONFIG_PM_DEBUG
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-		if (rc)
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-			printk(KERN_ERR
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-			       "iucv_path_connect returned with rc %i\n", rc);
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-#endif
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-		if (!rc)
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-			iucv_path_connected = 1;
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-		cpcmd("SET SMSG IUCV", NULL, 0, NULL);
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-	}
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-	return 0;
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-}
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-
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-static const struct dev_pm_ops smsg_pm_ops = {
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-	.freeze = smsg_pm_freeze,
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-	.thaw = smsg_pm_restore_thaw,
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-	.restore = smsg_pm_restore_thaw,
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-};
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-
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 static struct device_driver smsg_driver = {
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 	.owner = THIS_MODULE,
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 	.name = SMSGIUCV_DRV_NAME,
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 	.bus  = &iucv_bus,
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-	.pm = &smsg_pm_ops,
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 };
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 static void __exit smsg_exit(void)
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 {
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 	cpcmd("SET SMSG OFF", NULL, 0, NULL);
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-	device_unregister(smsg_dev);
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 	iucv_unregister(&smsg_handler, 1);
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 	driver_unregister(&smsg_driver);
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 }
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@@ -205,27 +157,10 @@
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 			       NULL, NULL, NULL);
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 	if (rc)
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 		goto out_free_path;
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-	else
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-		iucv_path_connected = 1;
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-	smsg_dev = kzalloc(sizeof(struct device), GFP_KERNEL);
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-	if (!smsg_dev) {
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-		rc = -ENOMEM;
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-		goto out_free_path;
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-	}
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-	dev_set_name(smsg_dev, "smsg_iucv");
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-	smsg_dev->bus = &iucv_bus;
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-	smsg_dev->parent = iucv_root;
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-	smsg_dev->release = (void (*)(struct device *))kfree;
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-	smsg_dev->driver = &smsg_driver;
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-	rc = device_register(smsg_dev);
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-	if (rc)
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-		goto out_put;
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 	cpcmd("SET SMSG IUCV", NULL, 0, NULL);
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 	return 0;
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-out_put:
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-	put_device(smsg_dev);
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 out_free_path:
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 	iucv_path_free(smsg_path);
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 	smsg_path = NULL;