Merge tag 's390-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Add support for the hugetlb_cma command line option to allocate
   gigantic hugepages using CMA

 - Add arch_get_random_long() support.

 - Add ap bus userspace notifications.

 - Increase default size of vmalloc area to 512GB and otherwise let it
   increase dynamically by the size of physical memory. This should fix
   all occurrences where the vmalloc area was not large enough.

 - Completely get rid of set_fs() (aka select SET_FS) and rework address
   space handling while doing that; making address space handling much
   more simple.

 - Reimplement getcpu vdso syscall in C.

 - Add support for extended SCLP responses (> 4k). This allows e.g. to
   handle also potential large system configurations.

 - Simplify KASAN by removing 3-level page table support and only
   supporting 4-levels from now on.

 - Improve debug-ability of the kernel decompressor code, which now
   prints also stack traces and symbols in case of problems to the
   console.

 - Remove more power management leftovers.

 - Other various fixes and improvements all over the place.

* tag 's390-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (62 commits)
  s390/mm: add support to allocate gigantic hugepages using CMA
  s390/crypto: add arch_get_random_long() support
  s390/smp: perform initial CPU reset also for SMT siblings
  s390/mm: use invalid asce for user space when switching to init_mm
  s390/idle: fix accounting with machine checks
  s390/idle: add missing mt_cycles calculation
  s390/boot: add build-id to decompressor
  s390/kexec_file: fix diag308 subcode when loading crash kernel
  s390/cio: fix use-after-free in ccw_device_destroy_console
  s390/cio: remove pm support from ccw bus driver
  s390/cio: remove pm support from css-bus driver
  s390/cio: remove pm support from IO subchannel drivers
  s390/cio: remove pm support from chsc subchannel driver
  s390/vmur: remove unused pm related functions
  s390/tape: remove unsupported PM functions
  s390/cio: remove pm support from eadm-sch drivers
  s390: remove pm support from console drivers
  s390/dasd: remove unused pm related functions
  s390/zfcp: remove pm support from zfcp driver
  s390/ap: let bus_register() add the AP bus sysfs attributes
  ...

9 files changed, 5 insertions, 455 deletions

diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 8f080d3fd380..c42405c620b5 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -120,31 +120,6 @@ static void chsc_subchannel_shutdown(struct subchannel *sch)
 	cio_disable_subchannel(sch);
 }
 
-static int chsc_subchannel_prepare(struct subchannel *sch)
-{
-	int cc;
-	struct schib schib;
-	/*
-	 * Don't allow suspend while the subchannel is not idle
-	 * since we don't have a way to clear the subchannel and
-	 * cannot disable it with a request running.
-	 */
-	cc = stsch(sch->schid, &schib);
-	if (!cc && scsw_stctl(&schib.scsw))
-		return -EAGAIN;
-	return 0;
-}
-
-static int chsc_subchannel_freeze(struct subchannel *sch)
-{
-	return cio_disable_subchannel(sch);
-}
-
-static int chsc_subchannel_restore(struct subchannel *sch)
-{
-	return cio_enable_subchannel(sch, (u32)(unsigned long)sch);
-}
-
 static struct css_device_id chsc_subchannel_ids[] = {
 	{ .match_flags = 0x1, .type =SUBCHANNEL_TYPE_CHSC, },
 	{ /* end of list */ },
@@ -161,10 +136,6 @@ static struct css_driver chsc_subchannel_driver = {
 	.probe = chsc_subchannel_probe,
 	.remove = chsc_subchannel_remove,
 	.shutdown = chsc_subchannel_shutdown,
-	.prepare = chsc_subchannel_prepare,
-	.freeze = chsc_subchannel_freeze,
-	.thaw = chsc_subchannel_restore,
-	.restore = chsc_subchannel_restore,
 };
 
 static int __init chsc_init_dbfs(void)
diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c
index 72dd2471ec1e..b7b590646d58 100644
--- a/drivers/s390/cio/cmf.c
+++ b/drivers/s390/cio/cmf.c
@@ -1109,11 +1109,6 @@ static ssize_t cmb_enable_store(struct device *dev,
 }
 DEVICE_ATTR_RW(cmb_enable);
 
-int ccw_set_cmf(struct ccw_device *cdev, int enable)
-{
-	return cmbops->set(cdev, enable ? 2 : 0);
-}
-
 /**
  * enable_cmf() - switch on the channel measurement for a specific device
  *  @cdev:	The ccw device to be enabled
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index cca1a7c4bb33..94c6470de635 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -18,7 +18,6 @@
 #include <linux/errno.h>
 #include <linux/list.h>
 #include <linux/reboot.h>
-#include <linux/suspend.h>
 #include <linux/proc_fs.h>
 #include <linux/genalloc.h>
 #include <linux/dma-mapping.h>
@@ -1044,59 +1043,6 @@ static struct notifier_block css_reboot_notifier = {
 	.notifier_call = css_reboot_event,
 };
 
-/*
- * Since the css devices are neither on a bus nor have a class
- * nor have a special device type, we cannot stop/restart channel
- * path measurements via the normal suspend/resume callbacks, but have
- * to use notifiers.
- */
-static int css_power_event(struct notifier_block *this, unsigned long event,
-			   void *ptr)
-{
-	struct channel_subsystem *css;
-	int ret;
-
-	switch (event) {
-	case PM_HIBERNATION_PREPARE:
-	case PM_SUSPEND_PREPARE:
-		ret = NOTIFY_DONE;
-		for_each_css(css) {
-			mutex_lock(&css->mutex);
-			if (!css->cm_enabled) {
-				mutex_unlock(&css->mutex);
-				continue;
-			}
-			ret = __chsc_do_secm(css, 0);
-			ret = notifier_from_errno(ret);
-			mutex_unlock(&css->mutex);
-		}
-		break;
-	case PM_POST_HIBERNATION:
-	case PM_POST_SUSPEND:
-		ret = NOTIFY_DONE;
-		for_each_css(css) {
-			mutex_lock(&css->mutex);
-			if (!css->cm_enabled) {
-				mutex_unlock(&css->mutex);
-				continue;
-			}
-			ret = __chsc_do_secm(css, 1);
-			ret = notifier_from_errno(ret);
-			mutex_unlock(&css->mutex);
-		}
-		/* search for subchannels, which appeared during hibernation */
-		css_schedule_reprobe();
-		break;
-	default:
-		ret = NOTIFY_DONE;
-	}
-	return ret;
-
-}
-static struct notifier_block css_power_notifier = {
-	.notifier_call = css_power_event,
-};
-
 #define  CIO_DMA_GFP (GFP_KERNEL | __GFP_ZERO)
 static struct gen_pool *cio_dma_pool;
 
@@ -1242,12 +1188,9 @@ static int __init css_bus_init(void)
 	ret = register_reboot_notifier(&css_reboot_notifier);
 	if (ret)
 		goto out_unregister;
-	ret = register_pm_notifier(&css_power_notifier);
-	if (ret)
-		goto out_unregister_rn;
 	ret = cio_dma_pool_init();
 	if (ret)
-		goto out_unregister_pmn;
+		goto out_unregister_rn;
 	airq_init();
 	css_init_done = 1;
 
@@ -1255,8 +1198,6 @@ static int __init css_bus_init(void)
 	isc_register(IO_SCH_ISC);
 
 	return 0;
-out_unregister_pmn:
-	unregister_pm_notifier(&css_power_notifier);
 out_unregister_rn:
 	unregister_reboot_notifier(&css_reboot_notifier);
 out_unregister:
@@ -1456,74 +1397,6 @@ static int css_uevent(struct device *dev, struct kobj_uevent_env *env)
 	return ret;
 }
 
-static int css_pm_prepare(struct device *dev)
-{
-	struct subchannel *sch = to_subchannel(dev);
-	struct css_driver *drv;
-
-	if (mutex_is_locked(&sch->reg_mutex))
-		return -EAGAIN;
-	if (!sch->dev.driver)
-		return 0;
-	drv = to_cssdriver(sch->dev.driver);
-	/* Notify drivers that they may not register children. */
-	return drv->prepare ? drv->prepare(sch) : 0;
-}
-
-static void css_pm_complete(struct device *dev)
-{
-	struct subchannel *sch = to_subchannel(dev);
-	struct css_driver *drv;
-
-	if (!sch->dev.driver)
-		return;
-	drv = to_cssdriver(sch->dev.driver);
-	if (drv->complete)
-		drv->complete(sch);
-}
-
-static int css_pm_freeze(struct device *dev)
-{
-	struct subchannel *sch = to_subchannel(dev);
-	struct css_driver *drv;
-
-	if (!sch->dev.driver)
-		return 0;
-	drv = to_cssdriver(sch->dev.driver);
-	return drv->freeze ? drv->freeze(sch) : 0;
-}
-
-static int css_pm_thaw(struct device *dev)
-{
-	struct subchannel *sch = to_subchannel(dev);
-	struct css_driver *drv;
-
-	if (!sch->dev.driver)
-		return 0;
-	drv = to_cssdriver(sch->dev.driver);
-	return drv->thaw ? drv->thaw(sch) : 0;
-}
-
-static int css_pm_restore(struct device *dev)
-{
-	struct subchannel *sch = to_subchannel(dev);
-	struct css_driver *drv;
-
-	css_update_ssd_info(sch);
-	if (!sch->dev.driver)
-		return 0;
-	drv = to_cssdriver(sch->dev.driver);
-	return drv->restore ? drv->restore(sch) : 0;
-}
-
-static const struct dev_pm_ops css_pm_ops = {
-	.prepare = css_pm_prepare,
-	.complete = css_pm_complete,
-	.freeze = css_pm_freeze,
-	.thaw = css_pm_thaw,
-	.restore = css_pm_restore,
-};
-
 static struct bus_type css_bus_type = {
 	.name     = "css",
 	.match    = css_bus_match,
@@ -1531,7 +1404,6 @@ static struct bus_type css_bus_type = {
 	.remove   = css_remove,
 	.shutdown = css_shutdown,
 	.uevent   = css_uevent,
-	.pm = &css_pm_ops,
 };
 
 /**
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 3f322ea0f498..2eddfc47f687 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -72,11 +72,6 @@ struct chp_link;
  * @probe: function called on probe
  * @remove: function called on remove
  * @shutdown: called at device shutdown
- * @prepare: prepare for pm state transition
- * @complete: undo work done in @prepare
- * @freeze: callback for freezing during hibernation snapshotting
- * @thaw: undo work done in @freeze
- * @restore: callback for restoring after hibernation
  * @settle: wait for asynchronous work to finish
  */
 struct css_driver {
@@ -88,11 +83,6 @@ struct css_driver {
 	int (*probe)(struct subchannel *);
 	int (*remove)(struct subchannel *);
 	void (*shutdown)(struct subchannel *);
-	int (*prepare) (struct subchannel *);
-	void (*complete) (struct subchannel *);
-	int (*freeze)(struct subchannel *);
-	int (*thaw) (struct subchannel *);
-	int (*restore)(struct subchannel *);
 	int (*settle)(void);
 };
 
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index b29fe8d50baf..e0005a4fc978 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -149,19 +149,6 @@ static struct css_device_id io_subchannel_ids[] = {
 	{ /* end of list */ },
 };
 
-static int io_subchannel_prepare(struct subchannel *sch)
-{
-	struct ccw_device *cdev;
-	/*
-	 * Don't allow suspend while a ccw device registration
-	 * is still outstanding.
-	 */
-	cdev = sch_get_cdev(sch);
-	if (cdev && !device_is_registered(&cdev->dev))
-		return -EAGAIN;
-	return 0;
-}
-
 static int io_subchannel_settle(void)
 {
 	int ret;
@@ -186,7 +173,6 @@ static struct css_driver io_subchannel_driver = {
 	.probe = io_subchannel_probe,
 	.remove = io_subchannel_remove,
 	.shutdown = io_subchannel_shutdown,
-	.prepare = io_subchannel_prepare,
 	.settle = io_subchannel_settle,
 };
 
@@ -1422,7 +1408,7 @@ static enum io_sch_action sch_get_action(struct subchannel *sch)
 	}
 	if (device_is_disconnected(cdev))
 		return IO_SCH_REPROBE;
-	if (cdev->online && !cdev->private->flags.resuming)
+	if (cdev->online)
 		return IO_SCH_VERIFY;
 	if (cdev->private->state == DEV_STATE_NOT_OPER)
 		return IO_SCH_UNREG_ATTACH;
@@ -1514,11 +1500,6 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process)
 		break;
 	case IO_SCH_UNREG_ATTACH:
 		spin_lock_irqsave(sch->lock, flags);
-		if (cdev->private->flags.resuming) {
-			/* Device will be handled later. */
-			rc = 0;
-			goto out_unlock;
-		}
 		sch_set_cdev(sch, NULL);
 		spin_unlock_irqrestore(sch->lock, flags);
 		/* Unregister ccw device. */
@@ -1531,7 +1512,7 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process)
 	switch (action) {
 	case IO_SCH_ORPH_UNREG:
 	case IO_SCH_UNREG:
-		if (!cdev || !cdev->private->flags.resuming)
+		if (!cdev)
 			css_sch_device_unregister(sch);
 		break;
 	case IO_SCH_ORPH_ATTACH:
@@ -1664,10 +1645,10 @@ void __init ccw_device_destroy_console(struct ccw_device *cdev)
 	struct io_subchannel_private *io_priv = to_io_private(sch);
 
 	set_io_private(sch, NULL);
-	put_device(&sch->dev);
-	put_device(&cdev->dev);
 	dma_free_coherent(&sch->dev, sizeof(*io_priv->dma_area),
 			  io_priv->dma_area, io_priv->dma_area_dma);
+	put_device(&sch->dev);
+	put_device(&cdev->dev);
 	kfree(io_priv);
 }
 
@@ -1690,14 +1671,6 @@ void ccw_device_wait_idle(struct ccw_device *cdev)
 		udelay_simple(100);
 	}
 }
-
-static int ccw_device_pm_restore(struct device *dev);
-
-int ccw_device_force_console(struct ccw_device *cdev)
-{
-	return ccw_device_pm_restore(&cdev->dev);
-}
-EXPORT_SYMBOL_GPL(ccw_device_force_console);
 #endif
 
 /**
@@ -1798,235 +1771,6 @@ static void ccw_device_shutdown(struct device *dev)
 	__disable_cmf(cdev);
 }
 
-static int ccw_device_pm_prepare(struct device *dev)
-{
-	struct ccw_device *cdev = to_ccwdev(dev);
-
-	if (work_pending(&cdev->private->todo_work))
-		return -EAGAIN;
-	/* Fail while device is being set online/offline. */
-	if (atomic_read(&cdev->private->onoff))
-		return -EAGAIN;
-
-	if (cdev->online && cdev->drv && cdev->drv->prepare)
-		return cdev->drv->prepare(cdev);
-
-	return 0;
-}
-
-static void ccw_device_pm_complete(struct device *dev)
-{
-	struct ccw_device *cdev = to_ccwdev(dev);
-
-	if (cdev->online && cdev->drv && cdev->drv->complete)
-		cdev->drv->complete(cdev);
-}
-
-static int ccw_device_pm_freeze(struct device *dev)
-{
-	struct ccw_device *cdev = to_ccwdev(dev);
-	struct subchannel *sch = to_subchannel(cdev->dev.parent);
-	int ret, cm_enabled;
-
-	/* Fail suspend while device is in transistional state. */
-	if (!dev_fsm_final_state(cdev))
-		return -EAGAIN;
-	if (!cdev->online)
-		return 0;
-	if (cdev->drv && cdev->drv->freeze) {
-		ret = cdev->drv->freeze(cdev);
-		if (ret)
-			return ret;
-	}
-
-	spin_lock_irq(sch->lock);
-	cm_enabled = cdev->private->cmb != NULL;
-	spin_unlock_irq(sch->lock);
-	if (cm_enabled) {
-		/* Don't have the css write on memory. */
-		ret = ccw_set_cmf(cdev, 0);
-		if (ret)
-			return ret;
-	}
-	/* From here on, disallow device driver I/O. */
-	spin_lock_irq(sch->lock);
-	ret = cio_disable_subchannel(sch);
-	spin_unlock_irq(sch->lock);
-
-	return ret;
-}
-
-static int ccw_device_pm_thaw(struct device *dev)
-{
-	struct ccw_device *cdev = to_ccwdev(dev);
-	struct subchannel *sch = to_subchannel(cdev->dev.parent);
-	int ret, cm_enabled;
-
-	if (!cdev->online)
-		return 0;
-
-	spin_lock_irq(sch->lock);
-	/* Allow device driver I/O again. */
-	ret = cio_enable_subchannel(sch, (u32)(addr_t)sch);
-	cm_enabled = cdev->private->cmb != NULL;
-	spin_unlock_irq(sch->lock);
-	if (ret)
-		return ret;
-
-	if (cm_enabled) {
-		ret = ccw_set_cmf(cdev, 1);
-		if (ret)
-			return ret;
-	}
-
-	if (cdev->drv && cdev->drv->thaw)
-		ret = cdev->drv->thaw(cdev);
-
-	return ret;
-}
-
-static void __ccw_device_pm_restore(struct ccw_device *cdev)
-{
-	struct subchannel *sch = to_subchannel(cdev->dev.parent);
-
-	spin_lock_irq(sch->lock);
-	if (cio_is_console(sch->schid)) {
-		cio_enable_subchannel(sch, (u32)(addr_t)sch);
-		goto out_unlock;
-	}
-	/*
-	 * While we were sleeping, devices may have gone or become
-	 * available again. Kick re-detection.
-	 */
-	cdev->private->flags.resuming = 1;
-	cdev->private->path_new_mask = LPM_ANYPATH;
-	css_sched_sch_todo(sch, SCH_TODO_EVAL);
-	spin_unlock_irq(sch->lock);
-	css_wait_for_slow_path();
-
-	/* cdev may have been moved to a different subchannel. */
-	sch = to_subchannel(cdev->dev.parent);
-	spin_lock_irq(sch->lock);
-	if (cdev->private->state != DEV_STATE_ONLINE &&
-	    cdev->private->state != DEV_STATE_OFFLINE)
-		goto out_unlock;
-
-	ccw_device_recognition(cdev);
-	spin_unlock_irq(sch->lock);
-	wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev) ||
-		   cdev->private->state == DEV_STATE_DISCONNECTED);
-	spin_lock_irq(sch->lock);
-
-out_unlock:
-	cdev->private->flags.resuming = 0;
-	spin_unlock_irq(sch->lock);
-}
-
-static int resume_handle_boxed(struct ccw_device *cdev)
-{
-	cdev->private->state = DEV_STATE_BOXED;
-	if (ccw_device_notify(cdev, CIO_BOXED) == NOTIFY_OK)
-		return 0;
-	ccw_device_sched_todo(cdev, CDEV_TODO_UNREG);
-	return -ENODEV;
-}
-
-static int resume_handle_disc(struct ccw_device *cdev)
-{
-	cdev->private->state = DEV_STATE_DISCONNECTED;
-	if (ccw_device_notify(cdev, CIO_GONE) == NOTIFY_OK)
-		return 0;
-	ccw_device_sched_todo(cdev, CDEV_TODO_UNREG);
-	return -ENODEV;
-}
-
-static int ccw_device_pm_restore(struct device *dev)
-{
-	struct ccw_device *cdev = to_ccwdev(dev);
-	struct subchannel *sch;
-	int ret = 0;
-
-	__ccw_device_pm_restore(cdev);
-	sch = to_subchannel(cdev->dev.parent);
-	spin_lock_irq(sch->lock);
-	if (cio_is_console(sch->schid))
-		goto out_restore;
-
-	/* check recognition results */
-	switch (cdev->private->state) {
-	case DEV_STATE_OFFLINE:
-	case DEV_STATE_ONLINE:
-		cdev->private->flags.donotify = 0;
-		break;
-	case DEV_STATE_BOXED:
-		ret = resume_handle_boxed(cdev);
-		if (ret)
-			goto out_unlock;
-		goto out_restore;
-	default:
-		ret = resume_handle_disc(cdev);
-		if (ret)
-			goto out_unlock;
-		goto out_restore;
-	}
-	/* check if the device type has changed */
-	if (!ccw_device_test_sense_data(cdev)) {
-		ccw_device_update_sense_data(cdev);
-		ccw_device_sched_todo(cdev, CDEV_TODO_REBIND);
-		ret = -ENODEV;
-		goto out_unlock;
-	}
-	if (!cdev->online)
-		goto out_unlock;
-
-	if (ccw_device_online(cdev)) {
-		ret = resume_handle_disc(cdev);
-		if (ret)
-			goto out_unlock;
-		goto out_restore;
-	}
-	spin_unlock_irq(sch->lock);
-	wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev));
-	spin_lock_irq(sch->lock);
-
-	if (ccw_device_notify(cdev, CIO_OPER) == NOTIFY_BAD) {
-		ccw_device_sched_todo(cdev, CDEV_TODO_UNREG);
-		ret = -ENODEV;
-		goto out_unlock;
-	}
-
-	/* reenable cmf, if needed */
-	if (cdev->private->cmb) {
-		spin_unlock_irq(sch->lock);
-		ret = ccw_set_cmf(cdev, 1);
-		spin_lock_irq(sch->lock);
-		if (ret) {
-			CIO_MSG_EVENT(2, "resume: cdev 0.%x.%04x: cmf failed "
-				      "(rc=%d)\n", cdev->private->dev_id.ssid,
-				      cdev->private->dev_id.devno, ret);
-			ret = 0;
-		}
-	}
-
-out_restore:
-	spin_unlock_irq(sch->lock);
-	if (cdev->online && cdev->drv && cdev->drv->restore)
-		ret = cdev->drv->restore(cdev);
-	return ret;
-
-out_unlock:
-	spin_unlock_irq(sch->lock);
-	return ret;
-}
-
-static const struct dev_pm_ops ccw_pm_ops = {
-	.prepare = ccw_device_pm_prepare,
-	.complete = ccw_device_pm_complete,
-	.freeze = ccw_device_pm_freeze,
-	.thaw = ccw_device_pm_thaw,
-	.restore = ccw_device_pm_restore,
-};
-
 static struct bus_type ccw_bus_type = {
 	.name   = "ccw",
 	.match  = ccw_bus_match,
@@ -2034,7 +1778,6 @@ static struct bus_type ccw_bus_type = {
 	.probe  = ccw_device_probe,
 	.remove = ccw_device_remove,
 	.shutdown = ccw_device_shutdown,
-	.pm = &ccw_pm_ops,
 };
 
 /**
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 853b6a8ca095..24b2fce69590 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -143,6 +143,5 @@ void retry_set_schib(struct ccw_device *cdev);
 void cmf_retry_copy_block(struct ccw_device *);
 int cmf_reenable(struct ccw_device *);
 void cmf_reactivate(void);
-int ccw_set_cmf(struct ccw_device *cdev, int enable);
 extern struct device_attribute dev_attr_cmb_enable;
 #endif
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 8fc267324ebb..6420b197bb05 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -224,12 +224,6 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
 		wake_up(&cdev->private->wait_q);
 		return;
 	}
-	if (cdev->private->flags.resuming) {
-		cdev->private->state = state;
-		cdev->private->flags.recog_done = 1;
-		wake_up(&cdev->private->wait_q);
-		return;
-	}
 	switch (state) {
 	case DEV_STATE_NOT_OPER:
 		break;
diff --git a/drivers/s390/cio/eadm_sch.c b/drivers/s390/cio/eadm_sch.c
index 53468ae64b99..c8964e0a23e7 100644
--- a/drivers/s390/cio/eadm_sch.c
+++ b/drivers/s390/cio/eadm_sch.c
@@ -306,16 +306,6 @@ static void eadm_subchannel_shutdown(struct subchannel *sch)
 	eadm_quiesce(sch);
 }
 
-static int eadm_subchannel_freeze(struct subchannel *sch)
-{
-	return cio_disable_subchannel(sch);
-}
-
-static int eadm_subchannel_restore(struct subchannel *sch)
-{
-	return cio_enable_subchannel(sch, (u32)(unsigned long)sch);
-}
-
 /**
  * eadm_subchannel_sch_event - process subchannel event
  * @sch: subchannel
@@ -369,9 +359,6 @@ static struct css_driver eadm_subchannel_driver = {
 	.remove = eadm_subchannel_remove,
 	.shutdown = eadm_subchannel_shutdown,
 	.sch_event = eadm_subchannel_sch_event,
-	.freeze = eadm_subchannel_freeze,
-	.thaw = eadm_subchannel_restore,
-	.restore = eadm_subchannel_restore,
 };
 
 static int __init eadm_sch_init(void)
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h
index c03b4a19974e..85a11c1836e5 100644
--- a/drivers/s390/cio/io_sch.h
+++ b/drivers/s390/cio/io_sch.h
@@ -160,7 +160,6 @@ struct ccw_device_private {
 		unsigned int donotify:1;    /* call notify function */
 		unsigned int recog_done:1;  /* dev. recog. complete */
 		unsigned int fake_irb:2;    /* deliver faked irb */
-		unsigned int resuming:1;    /* recognition while resume */
 		unsigned int pgroup:1;	    /* pathgroup is set up */
 		unsigned int mpath:1;	    /* multipathing is set up */
 		unsigned int pgid_unknown:1;/* unknown pgid state */