static void io_subchannel_ioterm(struct device *);
static void io_subchannel_shutdown(struct subchannel *);
-struct css_driver io_subchannel_driver = {
+static struct css_driver io_subchannel_driver = {
.subchannel_type = SUBCHANNEL_TYPE_IO,
.drv = {
.name = "io_subchannel",
struct ccw_device_id *id = &(cdev->id);
int len;
- len = snprint_alias(buf, PAGE_SIZE, id, "\n") + 1;
+ len = snprint_alias(buf, PAGE_SIZE, id, "\n");
return len > PAGE_SIZE ? PAGE_SIZE : len;
}
return sch_is_pseudo_sch(to_subchannel(cdev->dev.parent));
}
-static void ccw_device_unregister(struct work_struct *work)
+static void ccw_device_unregister(struct ccw_device *cdev)
{
- struct ccw_device_private *priv;
- struct ccw_device *cdev;
-
- priv = container_of(work, struct ccw_device_private, kick_work);
- cdev = priv->cdev;
if (test_and_clear_bit(1, &cdev->private->registered))
- device_unregister(&cdev->dev);
+ device_del(&cdev->dev);
+}
+
+static void ccw_device_remove_orphan_cb(struct device *dev)
+{
+ struct ccw_device *cdev = to_ccwdev(dev);
+
+ ccw_device_unregister(cdev);
put_device(&cdev->dev);
}
+static void ccw_device_remove_sch_cb(struct device *dev)
+{
+ struct subchannel *sch;
+
+ sch = to_subchannel(dev);
+ css_sch_device_unregister(sch);
+ /* Reset intparm to zeroes. */
+ sch->schib.pmcw.intparm = 0;
+ cio_modify(sch);
+ put_device(&sch->dev);
+}
+
static void
ccw_device_remove_disconnected(struct ccw_device *cdev)
{
- struct subchannel *sch;
unsigned long flags;
+ int rc;
+
/*
* Forced offline in disconnected state means
* 'throw away device'.
*/
if (ccw_device_is_orphan(cdev)) {
- /* Deregister ccw device. */
+ /*
+ * Deregister ccw device.
+ * Unfortunately, we cannot do this directly from the
+ * attribute method.
+ */
spin_lock_irqsave(cdev->ccwlock, flags);
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irqrestore(cdev->ccwlock, flags);
- if (get_device(&cdev->dev)) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_unregister);
- queue_work(ccw_device_work, &cdev->private->kick_work);
- }
- return ;
+ rc = device_schedule_callback(&cdev->dev,
+ ccw_device_remove_orphan_cb);
+ if (rc)
+ CIO_MSG_EVENT(2, "Couldn't unregister orphan "
+ "0.%x.%04x\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
+ return;
}
- sch = to_subchannel(cdev->dev.parent);
- css_sch_device_unregister(sch);
- /* Reset intparm to zeroes. */
- sch->schib.pmcw.intparm = 0;
- cio_modify(sch);
- put_device(&sch->dev);
+ /* Deregister subchannel, which will kill the ccw device. */
+ rc = device_schedule_callback(cdev->dev.parent,
+ ccw_device_remove_sch_cb);
+ if (rc)
+ CIO_MSG_EVENT(2, "Couldn't unregister disconnected device "
+ "0.%x.%04x\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
}
int
if (ret == 0)
wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev));
else {
- pr_debug("ccw_device_offline returned %d, device %s\n",
- ret, cdev->dev.bus_id);
+ CIO_MSG_EVENT(2, "ccw_device_offline returned %d, "
+ "device 0.%x.%04x\n",
+ ret, cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
cdev->online = 1;
}
return ret;
if (ret == 0)
wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev));
else {
- pr_debug("ccw_device_online returned %d, device %s\n",
- ret, cdev->dev.bus_id);
+ CIO_MSG_EVENT(2, "ccw_device_online returned %d, "
+ "device 0.%x.%04x\n",
+ ret, cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
return ret;
}
if (cdev->private->state != DEV_STATE_ONLINE)
spin_unlock_irq(cdev->ccwlock);
if (ret == 0)
wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev));
- else
- pr_debug("ccw_device_offline returned %d, device %s\n",
- ret, cdev->dev.bus_id);
+ else
+ CIO_MSG_EVENT(2, "ccw_device_offline returned %d, "
+ "device 0.%x.%04x\n",
+ ret, cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
return (ret == 0) ? -ENODEV : ret;
}
if (cdev->id.cu_type == 0) {
ret = ccw_device_recognition(cdev);
if (ret) {
- printk(KERN_WARNING"Couldn't start recognition "
- "for device %s (ret=%d)\n",
- cdev->dev.bus_id, ret);
+ CIO_MSG_EVENT(0, "Couldn't start recognition "
+ "for device 0.%x.%04x (ret=%d)\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno, ret);
return ret;
}
wait_event(cdev->private->wait_q,
if (force && cdev->private->state == DEV_STATE_BOXED) {
ret = ccw_device_stlck(cdev);
if (ret) {
- printk(KERN_WARNING"ccw_device_stlck for device %s "
- "returned %d!\n", cdev->dev.bus_id, ret);
+ dev_warn(&cdev->dev,
+ "ccw_device_stlck returned %d!\n", ret);
return;
}
if (cdev->id.cu_type == 0)
.attrs = ccwdev_attrs,
};
-static int
-device_add_files (struct device *dev)
-{
- return sysfs_create_group(&dev->kobj, &ccwdev_attr_group);
-}
-
-static void
-device_remove_files(struct device *dev)
-{
- sysfs_remove_group(&dev->kobj, &ccwdev_attr_group);
-}
+static struct attribute_group *ccwdev_attr_groups[] = {
+ &ccwdev_attr_group,
+ NULL,
+};
/* this is a simple abstraction for device_register that sets the
* correct bus type and adds the bus specific files */
return ret;
set_bit(1, &cdev->private->registered);
- if ((ret = device_add_files(dev))) {
- if (test_and_clear_bit(1, &cdev->private->registered))
- device_del(dev);
- }
return ret;
}
return;
}
set_bit(1, &cdev->private->registered);
- if (device_add_files(&cdev->dev)) {
- if (test_and_clear_bit(1, &cdev->private->registered))
- device_unregister(&cdev->dev);
- }
}
void ccw_device_do_unreg_rereg(struct work_struct *work)
cdev = priv->cdev;
sch = to_subchannel(cdev->dev.parent);
- device_remove_files(&cdev->dev);
- if (test_and_clear_bit(1, &cdev->private->registered))
- device_del(&cdev->dev);
+ ccw_device_unregister(cdev);
PREPARE_WORK(&cdev->private->kick_work,
ccw_device_add_changed);
queue_work(ccw_device_work, &cdev->private->kick_work);
cdev->dev.parent = &sch->dev;
cdev->dev.release = ccw_device_release;
INIT_LIST_HEAD(&cdev->private->kick_work.entry);
+ cdev->dev.groups = ccwdev_attr_groups;
/* Do first half of device_register. */
device_initialize(&cdev->dev);
if (!get_device(&sch->dev)) {
ret = device_reprobe(&cdev->dev);
if (ret)
/* We can't do much here. */
- dev_info(&cdev->dev, "device_reprobe() returned"
- " %d\n", ret);
+ CIO_MSG_EVENT(2, "device_reprobe() returned"
+ " %d for 0.%x.%04x\n", ret,
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
}
goto out;
}
+ /*
+ * Now we know this subchannel will stay, we can throw
+ * our delayed uevent.
+ */
+ sch->dev.uevent_suppress = 0;
+ kobject_uevent(&sch->dev.kobj, KOBJ_ADD);
/* make it known to the system */
ret = ccw_device_register(cdev);
if (ret) {
- printk (KERN_WARNING "%s: could not register %s\n",
- __func__, cdev->dev.bus_id);
+ CIO_MSG_EVENT(0, "Could not register ccw dev 0.%x.%04x: %d\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno, ret);
put_device(&cdev->dev);
spin_lock_irqsave(sch->lock, flags);
sch->dev.driver_data = NULL;
sch->dev.driver_data = NULL;
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irqrestore(cdev->ccwlock, flags);
- /*
- * Put unregistration on workqueue to avoid livelocks on the css bus
- * semaphore.
- */
- if (get_device(&cdev->dev)) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_unregister);
- queue_work(ccw_device_work, &cdev->private->kick_work);
- }
+ ccw_device_unregister(cdev);
+ put_device(&cdev->dev);
return 0;
}
struct ccw_driver *cdrv = cdev->drv;
int ret;
- pr_debug("removing device %s\n", cdev->dev.bus_id);
if (cdrv->remove)
cdrv->remove(cdev);
if (cdev->online) {
dev_fsm_final_state(cdev));
else
//FIXME: we can't fail!
- pr_debug("ccw_device_offline returned %d, device %s\n",
- ret, cdev->dev.bus_id);
+ CIO_MSG_EVENT(2, "ccw_device_offline returned %d, "
+ "device 0.%x.%04x\n",
+ ret, cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
}
ccw_device_set_timeout(cdev, 0);
cdev->drv = NULL;
projects / linux-2.6 / blobdiff