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path: root/drivers/s390/cio/css.c
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Diffstat (limited to 'drivers/s390/cio/css.c')
-rw-r--r--drivers/s390/cio/css.c40
1 files changed, 31 insertions, 9 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 3377097e65de..44461928aab8 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -788,27 +788,49 @@ static int __unset_registered(struct device *dev, void *data)
return 0;
}
-void css_schedule_eval_all_unreg(unsigned long delay)
+static int __unset_online(struct device *dev, void *data)
+{
+ struct idset *set = data;
+ struct subchannel *sch = to_subchannel(dev);
+ struct ccw_device *cdev = sch_get_cdev(sch);
+
+ if (cdev && cdev->online)
+ idset_sch_del(set, sch->schid);
+
+ return 0;
+}
+
+void css_schedule_eval_cond(enum css_eval_cond cond, unsigned long delay)
{
unsigned long flags;
- struct idset *unreg_set;
+ struct idset *set;
/* Find unregistered subchannels. */
- unreg_set = idset_sch_new();
- if (!unreg_set) {
+ set = idset_sch_new();
+ if (!set) {
/* Fallback. */
css_schedule_eval_all();
return;
}
- idset_fill(unreg_set);
- bus_for_each_dev(&css_bus_type, NULL, unreg_set, __unset_registered);
+ idset_fill(set);
+ switch (cond) {
+ case CSS_EVAL_UNREG:
+ bus_for_each_dev(&css_bus_type, NULL, set, __unset_registered);
+ break;
+ case CSS_EVAL_NOT_ONLINE:
+ bus_for_each_dev(&css_bus_type, NULL, set, __unset_online);
+ break;
+ default:
+ break;
+ }
+
/* Apply to slow_subchannel_set. */
spin_lock_irqsave(&slow_subchannel_lock, flags);
- idset_add_set(slow_subchannel_set, unreg_set);
+ idset_add_set(slow_subchannel_set, set);
atomic_set(&css_eval_scheduled, 1);
queue_delayed_work(cio_work_q, &slow_path_work, delay);
spin_unlock_irqrestore(&slow_subchannel_lock, flags);
- idset_free(unreg_set);
+ idset_free(set);
}
void css_wait_for_slow_path(void)
@@ -820,7 +842,7 @@ void css_wait_for_slow_path(void)
void css_schedule_reprobe(void)
{
/* Schedule with a delay to allow merging of subsequent calls. */
- css_schedule_eval_all_unreg(1 * HZ);
+ css_schedule_eval_cond(CSS_EVAL_UNREG, 1 * HZ);
}
EXPORT_SYMBOL_GPL(css_schedule_reprobe);