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net/af_iucv: remove pm support

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commit 394216275c ("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 <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2020-05-19 21:10:09 +02:00 committed by David S. Miller
parent 4b32f86bf1
commit 585bc22095
1 changed files with 1 additions and 140 deletions
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141
net/iucv/af_iucv.c
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@ -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);
}