From 585bc2209539501674b77de68f58e98039892501 Mon Sep 17 00:00:00 2001 From: Julian Wiedmann Date: Tue, 19 May 2020 21:10:09 +0200 Subject: [PATCH] net/af_iucv: remove pm support commit 394216275c7d ("s390: remove broken hibernate / power management support") removed support for ARCH_HIBERNATION_POSSIBLE from s390. So drop the unused pm ops from the s390-only af_iucv socket code. Signed-off-by: Julian Wiedmann Signed-off-by: David S. Miller --- net/iucv/af_iucv.c | 141 +-------------------------------------------- 1 file changed, 1 insertion(+), 140 deletions(-) diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index c4bdcbc84b07..84bd18fea1d6 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -87,7 +87,6 @@ do { \ static void iucv_sock_kill(struct sock *sk); static void iucv_sock_close(struct sock *sk); -static void iucv_sever_path(struct sock *, int); static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev); @@ -127,110 +126,6 @@ static inline void low_nmcpy(unsigned char *dst, char *src) memcpy(&dst[8], src, 8); } -static int afiucv_pm_prepare(struct device *dev) -{ -#ifdef CONFIG_PM_DEBUG - printk(KERN_WARNING "afiucv_pm_prepare\n"); -#endif - return 0; -} - -static void afiucv_pm_complete(struct device *dev) -{ -#ifdef CONFIG_PM_DEBUG - printk(KERN_WARNING "afiucv_pm_complete\n"); -#endif -} - -/** - * afiucv_pm_freeze() - Freeze PM callback - * @dev: AFIUCV dummy device - * - * Sever all established IUCV communication pathes - */ -static int afiucv_pm_freeze(struct device *dev) -{ - struct iucv_sock *iucv; - struct sock *sk; - -#ifdef CONFIG_PM_DEBUG - printk(KERN_WARNING "afiucv_pm_freeze\n"); -#endif - read_lock(&iucv_sk_list.lock); - sk_for_each(sk, &iucv_sk_list.head) { - iucv = iucv_sk(sk); - switch (sk->sk_state) { - case IUCV_DISCONN: - case IUCV_CLOSING: - case IUCV_CONNECTED: - iucv_sever_path(sk, 0); - break; - case IUCV_OPEN: - case IUCV_BOUND: - case IUCV_LISTEN: - case IUCV_CLOSED: - default: - break; - } - skb_queue_purge(&iucv->send_skb_q); - skb_queue_purge(&iucv->backlog_skb_q); - } - read_unlock(&iucv_sk_list.lock); - return 0; -} - -/** - * afiucv_pm_restore_thaw() - Thaw and restore PM callback - * @dev: AFIUCV dummy device - * - * socket clean up after freeze - */ -static int afiucv_pm_restore_thaw(struct device *dev) -{ - struct sock *sk; - -#ifdef CONFIG_PM_DEBUG - printk(KERN_WARNING "afiucv_pm_restore_thaw\n"); -#endif - read_lock(&iucv_sk_list.lock); - sk_for_each(sk, &iucv_sk_list.head) { - switch (sk->sk_state) { - case IUCV_CONNECTED: - sk->sk_err = EPIPE; - sk->sk_state = IUCV_DISCONN; - sk->sk_state_change(sk); - break; - case IUCV_DISCONN: - case IUCV_CLOSING: - case IUCV_LISTEN: - case IUCV_BOUND: - case IUCV_OPEN: - default: - break; - } - } - read_unlock(&iucv_sk_list.lock); - return 0; -} - -static const struct dev_pm_ops afiucv_pm_ops = { - .prepare = afiucv_pm_prepare, - .complete = afiucv_pm_complete, - .freeze = afiucv_pm_freeze, - .thaw = afiucv_pm_restore_thaw, - .restore = afiucv_pm_restore_thaw, -}; - -static struct device_driver af_iucv_driver = { - .owner = THIS_MODULE, - .name = "afiucv", - .bus = NULL, - .pm = &afiucv_pm_ops, -}; - -/* dummy device used as trigger for PM functions */ -static struct device *af_iucv_dev; - /** * iucv_msg_length() - Returns the length of an iucv message. * @msg: Pointer to struct iucv_message, MUST NOT be NULL @@ -2409,45 +2304,11 @@ static struct packet_type iucv_packet_type = { static int afiucv_iucv_init(void) { - int err; - - err = pr_iucv->iucv_register(&af_iucv_handler, 0); - if (err) - goto out; - /* establish dummy device */ - af_iucv_driver.bus = pr_iucv->bus; - err = driver_register(&af_iucv_driver); - if (err) - goto out_iucv; - af_iucv_dev = kzalloc(sizeof(struct device), GFP_KERNEL); - if (!af_iucv_dev) { - err = -ENOMEM; - goto out_driver; - } - dev_set_name(af_iucv_dev, "af_iucv"); - af_iucv_dev->bus = pr_iucv->bus; - af_iucv_dev->parent = pr_iucv->root; - af_iucv_dev->release = (void (*)(struct device *))kfree; - af_iucv_dev->driver = &af_iucv_driver; - err = device_register(af_iucv_dev); - if (err) - goto out_iucv_dev; - return 0; - -out_iucv_dev: - put_device(af_iucv_dev); -out_driver: - driver_unregister(&af_iucv_driver); -out_iucv: - pr_iucv->iucv_unregister(&af_iucv_handler, 0); -out: - return err; + return pr_iucv->iucv_register(&af_iucv_handler, 0); } static void afiucv_iucv_exit(void) { - device_unregister(af_iucv_dev); - driver_unregister(&af_iucv_driver); pr_iucv->iucv_unregister(&af_iucv_handler, 0); }