Commit 4b32f86b authored by Julian Wiedmann's avatar Julian Wiedmann Committed by David S. Miller

net/iucv: remove pm support

commit 39421627 ("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 iucv bus driver.

CC: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: default avatarJulian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2de49925
...@@ -67,32 +67,9 @@ static int iucv_bus_match(struct device *dev, struct device_driver *drv) ...@@ -67,32 +67,9 @@ static int iucv_bus_match(struct device *dev, struct device_driver *drv)
return 0; return 0;
} }
enum iucv_pm_states {
IUCV_PM_INITIAL = 0,
IUCV_PM_FREEZING = 1,
IUCV_PM_THAWING = 2,
IUCV_PM_RESTORING = 3,
};
static enum iucv_pm_states iucv_pm_state;
static int iucv_pm_prepare(struct device *);
static void iucv_pm_complete(struct device *);
static int iucv_pm_freeze(struct device *);
static int iucv_pm_thaw(struct device *);
static int iucv_pm_restore(struct device *);
static const struct dev_pm_ops iucv_pm_ops = {
.prepare = iucv_pm_prepare,
.complete = iucv_pm_complete,
.freeze = iucv_pm_freeze,
.thaw = iucv_pm_thaw,
.restore = iucv_pm_restore,
};
struct bus_type iucv_bus = { struct bus_type iucv_bus = {
.name = "iucv", .name = "iucv",
.match = iucv_bus_match, .match = iucv_bus_match,
.pm = &iucv_pm_ops,
}; };
EXPORT_SYMBOL(iucv_bus); EXPORT_SYMBOL(iucv_bus);
...@@ -434,31 +411,6 @@ static void iucv_block_cpu(void *data) ...@@ -434,31 +411,6 @@ static void iucv_block_cpu(void *data)
cpumask_clear_cpu(cpu, &iucv_irq_cpumask); cpumask_clear_cpu(cpu, &iucv_irq_cpumask);
} }
/**
* iucv_block_cpu_almost
* @data: unused
*
* Allow connection-severed interrupts only on this cpu.
*/
static void iucv_block_cpu_almost(void *data)
{
int cpu = smp_processor_id();
union iucv_param *parm;
/* Allow iucv control interrupts only */
parm = iucv_param_irq[cpu];
memset(parm, 0, sizeof(union iucv_param));
parm->set_mask.ipmask = 0x08;
iucv_call_b2f0(IUCV_SETMASK, parm);
/* Allow iucv-severed interrupt only */
memset(parm, 0, sizeof(union iucv_param));
parm->set_mask.ipmask = 0x20;
iucv_call_b2f0(IUCV_SETCONTROLMASK, parm);
/* Clear indication that iucv interrupts are allowed for this cpu. */
cpumask_clear_cpu(cpu, &iucv_irq_cpumask);
}
/** /**
* iucv_declare_cpu * iucv_declare_cpu
* @data: unused * @data: unused
...@@ -1834,146 +1786,6 @@ static void iucv_external_interrupt(struct ext_code ext_code, ...@@ -1834,146 +1786,6 @@ static void iucv_external_interrupt(struct ext_code ext_code,
spin_unlock(&iucv_queue_lock); spin_unlock(&iucv_queue_lock);
} }
static int iucv_pm_prepare(struct device *dev)
{
int rc = 0;
#ifdef CONFIG_PM_DEBUG
printk(KERN_INFO "iucv_pm_prepare\n");
#endif
if (dev->driver && dev->driver->pm && dev->driver->pm->prepare)
rc = dev->driver->pm->prepare(dev);
return rc;
}
static void iucv_pm_complete(struct device *dev)
{
#ifdef CONFIG_PM_DEBUG
printk(KERN_INFO "iucv_pm_complete\n");
#endif
if (dev->driver && dev->driver->pm && dev->driver->pm->complete)
dev->driver->pm->complete(dev);
}
/**
* iucv_path_table_empty() - determine if iucv path table is empty
*
* Returns 0 if there are still iucv pathes defined
* 1 if there are no iucv pathes defined
*/
static int iucv_path_table_empty(void)
{
int i;
for (i = 0; i < iucv_max_pathid; i++) {
if (iucv_path_table[i])
return 0;
}
return 1;
}
/**
* iucv_pm_freeze() - Freeze PM callback
* @dev: iucv-based device
*
* disable iucv interrupts
* invoke callback function of the iucv-based driver
* shut down iucv, if no iucv-pathes are established anymore
*/
static int iucv_pm_freeze(struct device *dev)
{
int cpu;
struct iucv_irq_list *p, *n;
int rc = 0;
#ifdef CONFIG_PM_DEBUG
printk(KERN_WARNING "iucv_pm_freeze\n");
#endif
if (iucv_pm_state != IUCV_PM_FREEZING) {
for_each_cpu(cpu, &iucv_irq_cpumask)
smp_call_function_single(cpu, iucv_block_cpu_almost,
NULL, 1);
cancel_work_sync(&iucv_work);
list_for_each_entry_safe(p, n, &iucv_work_queue, list) {
list_del_init(&p->list);
iucv_sever_pathid(p->data.ippathid,
iucv_error_no_listener);
kfree(p);
}
}
iucv_pm_state = IUCV_PM_FREEZING;
if (dev->driver && dev->driver->pm && dev->driver->pm->freeze)
rc = dev->driver->pm->freeze(dev);
if (iucv_path_table_empty())
iucv_disable();
return rc;
}
/**
* iucv_pm_thaw() - Thaw PM callback
* @dev: iucv-based device
*
* make iucv ready for use again: allocate path table, declare interrupt buffers
* and enable iucv interrupts
* invoke callback function of the iucv-based driver
*/
static int iucv_pm_thaw(struct device *dev)
{
int rc = 0;
#ifdef CONFIG_PM_DEBUG
printk(KERN_WARNING "iucv_pm_thaw\n");
#endif
iucv_pm_state = IUCV_PM_THAWING;
if (!iucv_path_table) {
rc = iucv_enable();
if (rc)
goto out;
}
if (cpumask_empty(&iucv_irq_cpumask)) {
if (iucv_nonsmp_handler)
/* enable interrupts on one cpu */
iucv_allow_cpu(NULL);
else
/* enable interrupts on all cpus */
iucv_setmask_mp();
}
if (dev->driver && dev->driver->pm && dev->driver->pm->thaw)
rc = dev->driver->pm->thaw(dev);
out:
return rc;
}
/**
* iucv_pm_restore() - Restore PM callback
* @dev: iucv-based device
*
* make iucv ready for use again: allocate path table, declare interrupt buffers
* and enable iucv interrupts
* invoke callback function of the iucv-based driver
*/
static int iucv_pm_restore(struct device *dev)
{
int rc = 0;
#ifdef CONFIG_PM_DEBUG
printk(KERN_WARNING "iucv_pm_restore %p\n", iucv_path_table);
#endif
if ((iucv_pm_state != IUCV_PM_RESTORING) && iucv_path_table)
pr_warn("Suspending Linux did not completely close all IUCV connections\n");
iucv_pm_state = IUCV_PM_RESTORING;
if (cpumask_empty(&iucv_irq_cpumask)) {
rc = iucv_query_maxconn();
rc = iucv_enable();
if (rc)
goto out;
}
if (dev->driver && dev->driver->pm && dev->driver->pm->restore)
rc = dev->driver->pm->restore(dev);
out:
return rc;
}
struct iucv_interface iucv_if = { struct iucv_interface iucv_if = {
.message_receive = iucv_message_receive, .message_receive = iucv_message_receive,
.__message_receive = __iucv_message_receive, .__message_receive = __iucv_message_receive,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment