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s390/hvc_iucv: Remove power management support

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Power management support was removed for s390 with
commit 394216275c ("s390: remove broken hibernate / power management
support").

Remove the hvc_iucv_driver, but keep the device struct around so that
it can continue to provide the hvc_iucv_dev_attr_groups attributes.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Julian Wiedmann 2021-06-14 09:14:27 +02:00 committed by Vasily Gorbik
parent 7b034d9c1b
commit f3827dc6b0
1 changed files with 0 additions and 51 deletions
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51
drivers/tty/hvc/hvc_iucv.c
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@ -966,37 +966,6 @@ static void hvc_iucv_msg_complete(struct iucv_path *path,
destroy_tty_buffer_list(&list_remove);
}
/**
* hvc_iucv_pm_freeze() - Freeze PM callback
* @dev: IUVC HVC terminal device
*
* Sever an established IUCV communication path and
* trigger a hang-up of the underlying HVC terminal.
*/
static int hvc_iucv_pm_freeze(struct device *dev)
{
struct hvc_iucv_private *priv = dev_get_drvdata(dev);
local_bh_disable();
hvc_iucv_hangup(priv);
local_bh_enable();
return 0;
}
/**
* hvc_iucv_pm_restore_thaw() - Thaw and restore PM callback
* @dev: IUVC HVC terminal device
*
* Wake up the HVC thread to trigger hang-up and respective
* HVC back-end notifier invocations.
*/
static int hvc_iucv_pm_restore_thaw(struct device *dev)
{
hvc_kick();
return 0;
}
static ssize_t hvc_iucv_dev_termid_show(struct device *dev,
struct device_attribute *attr,
char *buf)
@ -1051,20 +1020,6 @@ static const struct hv_ops hvc_iucv_ops = {
.dtr_rts = hvc_iucv_dtr_rts,
};
/* Suspend / resume device operations */
static const struct dev_pm_ops hvc_iucv_pm_ops = {
.freeze = hvc_iucv_pm_freeze,
.thaw = hvc_iucv_pm_restore_thaw,
.restore = hvc_iucv_pm_restore_thaw,
};
/* IUCV HVC device driver */
static struct device_driver hvc_iucv_driver = {
.name = KMSG_COMPONENT,
.bus = &iucv_bus,
.pm = &hvc_iucv_pm_ops,
};
/* IUCV HVC device attributes */
static DEVICE_ATTR(termid, 0640, hvc_iucv_dev_termid_show, NULL);
static DEVICE_ATTR(state, 0640, hvc_iucv_dev_state_show, NULL);
@ -1144,7 +1099,6 @@ static int __init hvc_iucv_alloc(int id, unsigned int is_console)
dev_set_drvdata(priv->dev, priv);
priv->dev->bus = &iucv_bus;
priv->dev->parent = iucv_root;
priv->dev->driver = &hvc_iucv_driver;
priv->dev->groups = hvc_iucv_dev_attr_groups;
priv->dev->release = (void (*)(struct device *)) kfree;
rc = device_register(priv->dev);
@ -1376,11 +1330,6 @@ static int __init hvc_iucv_init(void)
goto out_error;
}
/* register IUCV HVC device driver */
rc = driver_register(&hvc_iucv_driver);
if (rc)
goto out_error;
/* parse hvc_iucv_allow string and create z/VM user ID filter list */
if (hvc_iucv_filter_string) {
rc = hvc_iucv_setup_filter(hvc_iucv_filter_string);