const: constify remaining dev_pm_ops

[safe/jmp/linux-2.6] / net / iucv / iucv.c

diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index c833481..fd8b283 100644 (file)
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -79,13 +79,21 @@ static int iucv_bus_match(struct device *dev, struct device_driver *drv)
        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 struct dev_pm_ops iucv_pm_ops = {
+static const struct dev_pm_ops iucv_pm_ops = {
        .prepare = iucv_pm_prepare,
        .complete = iucv_pm_complete,
        .freeze = iucv_pm_freeze,
@@ -354,7 +362,7 @@ static int iucv_query_maxconn(void)
                "       srl     %0,28\n"
                : "=d" (ccode), "+d" (reg0), "+d" (reg1) : : "cc");
        if (ccode == 0)
-               iucv_max_pathid = reg0;
+               iucv_max_pathid = reg1;
        kfree(param);
        return ccode ? -EPERM : 0;
 }
@@ -856,7 +864,7 @@ int iucv_path_accept(struct iucv_path *path, struct iucv_handler *handler,
        int rc;
 
        local_bh_disable();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -905,7 +913,7 @@ int iucv_path_connect(struct iucv_path *path, struct iucv_handler *handler,
 
        spin_lock_bh(&iucv_table_lock);
        iucv_cleanup_queue();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -965,7 +973,7 @@ int iucv_path_quiesce(struct iucv_path *path, u8 userdata[16])
        int rc;
 
        local_bh_disable();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -997,7 +1005,7 @@ int iucv_path_resume(struct iucv_path *path, u8 userdata[16])
        int rc;
 
        local_bh_disable();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -1026,7 +1034,7 @@ int iucv_path_sever(struct iucv_path *path, u8 userdata[16])
        int rc;
 
        preempt_disable();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -1060,7 +1068,7 @@ int iucv_message_purge(struct iucv_path *path, struct iucv_message *msg,
        int rc;
 
        local_bh_disable();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -1152,7 +1160,7 @@ int __iucv_message_receive(struct iucv_path *path, struct iucv_message *msg,
        if (msg->flags & IUCV_IPRMDATA)
                return iucv_message_receive_iprmdata(path, msg, flags,
                                                     buffer, size, residual);
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -1225,7 +1233,7 @@ int iucv_message_reject(struct iucv_path *path, struct iucv_message *msg)
        int rc;
 
        local_bh_disable();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -1264,7 +1272,7 @@ int iucv_message_reply(struct iucv_path *path, struct iucv_message *msg,
        int rc;
 
        local_bh_disable();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -1314,7 +1322,7 @@ int __iucv_message_send(struct iucv_path *path, struct iucv_message *msg,
        union iucv_param *parm;
        int rc;
 
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -1401,7 +1409,7 @@ int iucv_message_send2way(struct iucv_path *path, struct iucv_message *msg,
        int rc;
 
        local_bh_disable();
-       if (!cpu_isset(smp_processor_id(), iucv_buffer_cpumask)) {
+       if (cpus_empty(iucv_buffer_cpumask)) {
                rc = -EIO;
                goto out;
        }
@@ -1760,7 +1768,6 @@ static void iucv_tasklet_fn(unsigned long ignored)
  */
 static void iucv_work_fn(struct work_struct *work)
 {
-       typedef void iucv_irq_fn(struct iucv_irq_data *);
        LIST_HEAD(work_queue);
        struct iucv_irq_list *p, *n;
 
@@ -1870,13 +1877,25 @@ int iucv_path_table_empty(void)
 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
-       for_each_cpu_mask_nr(cpu, iucv_irq_cpumask)
-               smp_call_function_single(cpu, iucv_block_cpu_almost, NULL, 1);
+       if (iucv_pm_state != IUCV_PM_FREEZING) {
+               for_each_cpu_mask_nr(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())
@@ -1899,6 +1918,7 @@ static int iucv_pm_thaw(struct device *dev)
 #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)
@@ -1933,6 +1953,10 @@ static int iucv_pm_restore(struct device *dev)
 #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_warning("Suspending Linux did not completely close all IUCV "
+                       "connections\n");
+       iucv_pm_state = IUCV_PM_RESTORING;
        if (cpus_empty(iucv_irq_cpumask)) {
                rc = iucv_query_maxconn();
                rc = iucv_enable();