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path: root/drivers/s390/cio/device.c
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Diffstat (limited to 'drivers/s390/cio/device.c')
-rw-r--r--drivers/s390/cio/device.c38
1 files changed, 15 insertions, 23 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 6527f3f3449..f780bdd3a04 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -131,6 +131,10 @@ static void io_subchannel_shutdown(struct subchannel *);
static int io_subchannel_sch_event(struct subchannel *, int);
static int io_subchannel_chp_event(struct subchannel *, struct chp_link *,
int);
+static void recovery_func(unsigned long data);
+struct workqueue_struct *ccw_device_work;
+wait_queue_head_t ccw_device_init_wq;
+atomic_t ccw_device_init_count;
static struct css_device_id io_subchannel_ids[] = {
{ .match_flags = 0x1, .type = SUBCHANNEL_TYPE_IO, },
@@ -151,6 +155,13 @@ static int io_subchannel_prepare(struct subchannel *sch)
return 0;
}
+static void io_subchannel_settle(void)
+{
+ wait_event(ccw_device_init_wq,
+ atomic_read(&ccw_device_init_count) == 0);
+ flush_workqueue(ccw_device_work);
+}
+
static struct css_driver io_subchannel_driver = {
.owner = THIS_MODULE,
.subchannel_type = io_subchannel_ids,
@@ -162,16 +173,10 @@ static struct css_driver io_subchannel_driver = {
.remove = io_subchannel_remove,
.shutdown = io_subchannel_shutdown,
.prepare = io_subchannel_prepare,
+ .settle = io_subchannel_settle,
};
-struct workqueue_struct *ccw_device_work;
-wait_queue_head_t ccw_device_init_wq;
-atomic_t ccw_device_init_count;
-
-static void recovery_func(unsigned long data);
-
-static int __init
-init_ccw_bus_type (void)
+int __init io_subchannel_init(void)
{
int ret;
@@ -181,10 +186,10 @@ init_ccw_bus_type (void)
ccw_device_work = create_singlethread_workqueue("cio");
if (!ccw_device_work)
- return -ENOMEM; /* FIXME: better errno ? */
+ return -ENOMEM;
slow_path_wq = create_singlethread_workqueue("kslowcrw");
if (!slow_path_wq) {
- ret = -ENOMEM; /* FIXME: better errno ? */
+ ret = -ENOMEM;
goto out_err;
}
if ((ret = bus_register (&ccw_bus_type)))
@@ -194,9 +199,6 @@ init_ccw_bus_type (void)
if (ret)
goto out_err;
- wait_event(ccw_device_init_wq,
- atomic_read(&ccw_device_init_count) == 0);
- flush_workqueue(ccw_device_work);
return 0;
out_err:
if (ccw_device_work)
@@ -206,16 +208,6 @@ out_err:
return ret;
}
-static void __exit
-cleanup_ccw_bus_type (void)
-{
- css_driver_unregister(&io_subchannel_driver);
- bus_unregister(&ccw_bus_type);
- destroy_workqueue(ccw_device_work);
-}
-
-subsys_initcall(init_ccw_bus_type);
-module_exit(cleanup_ccw_bus_type);
/************************ device handling **************************/