diff options
Diffstat (limited to 'drivers/s390/cio/device.c')
| -rw-r--r-- | drivers/s390/cio/device.c | 57 |
1 files changed, 20 insertions, 37 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 23d5752349b5..c4d2f667a2f6 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -457,12 +457,13 @@ int ccw_device_set_online(struct ccw_device *cdev) return (ret == 0) ? -ENODEV : ret; } -static void online_store_handle_offline(struct ccw_device *cdev) +static int online_store_handle_offline(struct ccw_device *cdev) { if (cdev->private->state == DEV_STATE_DISCONNECTED) ccw_device_remove_disconnected(cdev); - else if (cdev->drv && cdev->drv->set_offline) - ccw_device_set_offline(cdev); + else if (cdev->online && cdev->drv && cdev->drv->set_offline) + return ccw_device_set_offline(cdev); + return 0; } static int online_store_recog_and_online(struct ccw_device *cdev) @@ -530,13 +531,10 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr, goto out; switch (i) { case 0: - online_store_handle_offline(cdev); - ret = count; + ret = online_store_handle_offline(cdev); break; case 1: ret = online_store_handle_online(cdev, force); - if (!ret) - ret = count; break; default: ret = -EINVAL; @@ -545,7 +543,7 @@ out: if (cdev->drv) module_put(cdev->drv->owner); atomic_set(&cdev->private->onoff, 0); - return ret; + return (ret < 0) ? ret : count; } static ssize_t @@ -681,35 +679,22 @@ get_orphaned_ccwdev_by_dev_id(struct channel_subsystem *css, return dev ? to_ccwdev(dev) : NULL; } -static void -ccw_device_add_changed(struct work_struct *work) -{ - struct ccw_device_private *priv; - struct ccw_device *cdev; - - priv = container_of(work, struct ccw_device_private, kick_work); - cdev = priv->cdev; - if (device_add(&cdev->dev)) { - put_device(&cdev->dev); - return; - } - set_bit(1, &cdev->private->registered); -} - -void ccw_device_do_unreg_rereg(struct work_struct *work) +void ccw_device_do_unbind_bind(struct work_struct *work) { struct ccw_device_private *priv; struct ccw_device *cdev; struct subchannel *sch; + int ret; priv = container_of(work, struct ccw_device_private, kick_work); cdev = priv->cdev; sch = to_subchannel(cdev->dev.parent); - ccw_device_unregister(cdev); - PREPARE_WORK(&cdev->private->kick_work, - ccw_device_add_changed); - queue_work(ccw_device_work, &cdev->private->kick_work); + if (test_bit(1, &cdev->private->registered)) { + device_release_driver(&cdev->dev); + ret = device_attach(&cdev->dev); + WARN_ON(ret == -ENODEV); + } } static void @@ -799,7 +784,7 @@ static void sch_attach_disconnected_device(struct subchannel *sch, return; other_sch = to_subchannel(cdev->dev.parent); /* Note: device_move() changes cdev->dev.parent */ - ret = device_move(&cdev->dev, &sch->dev); + ret = device_move(&cdev->dev, &sch->dev, DPM_ORDER_PARENT_BEFORE_DEV); if (ret) { CIO_MSG_EVENT(0, "Moving disconnected device 0.%x.%04x failed " "(ret=%d)!\n", cdev->private->dev_id.ssid, @@ -830,7 +815,7 @@ static void sch_attach_orphaned_device(struct subchannel *sch, * Try to move the ccw device to its new subchannel. * Note: device_move() changes cdev->dev.parent */ - ret = device_move(&cdev->dev, &sch->dev); + ret = device_move(&cdev->dev, &sch->dev, DPM_ORDER_PARENT_BEFORE_DEV); if (ret) { CIO_MSG_EVENT(0, "Moving device 0.%x.%04x from orphanage " "failed (ret=%d)!\n", @@ -897,7 +882,8 @@ void ccw_device_move_to_orphanage(struct work_struct *work) * ccw device can take its place on the subchannel. * Note: device_move() changes cdev->dev.parent */ - ret = device_move(&cdev->dev, &css->pseudo_subchannel->dev); + ret = device_move(&cdev->dev, &css->pseudo_subchannel->dev, + DPM_ORDER_NONE); if (ret) { CIO_MSG_EVENT(0, "Moving device 0.%x.%04x to orphanage failed " "(ret=%d)!\n", cdev->private->dev_id.ssid, @@ -981,7 +967,7 @@ io_subchannel_register(struct work_struct *work) * Now we know this subchannel will stay, we can throw * our delayed uevent. */ - sch->dev.uevent_suppress = 0; + dev_set_uevent_suppress(&sch->dev, 0); kobject_uevent(&sch->dev.kobj, KOBJ_ADD); /* make it known to the system */ ret = ccw_device_register(cdev); @@ -1034,8 +1020,6 @@ static void ccw_device_call_sch_unregister(struct work_struct *work) void io_subchannel_recog_done(struct ccw_device *cdev) { - struct subchannel *sch; - if (css_init_done == 0) { cdev->private->flags.recog_done = 1; return; @@ -1046,7 +1030,6 @@ io_subchannel_recog_done(struct ccw_device *cdev) /* Remove device found not operational. */ if (!get_device(&cdev->dev)) break; - sch = to_subchannel(cdev->dev.parent); PREPARE_WORK(&cdev->private->kick_work, ccw_device_call_sch_unregister); queue_work(slow_path_wq, &cdev->private->kick_work); @@ -1129,7 +1112,7 @@ static void ccw_device_move_to_sch(struct work_struct *work) * Try to move the ccw device to its new subchannel. * Note: device_move() changes cdev->dev.parent */ - rc = device_move(&cdev->dev, &sch->dev); + rc = device_move(&cdev->dev, &sch->dev, DPM_ORDER_PARENT_BEFORE_DEV); mutex_unlock(&sch->reg_mutex); if (rc) { CIO_MSG_EVENT(0, "Moving device 0.%x.%04x to subchannel " @@ -1243,7 +1226,7 @@ static int io_subchannel_probe(struct subchannel *sch) * the ccw_device and exit. This happens for all early * devices, e.g. the console. */ - sch->dev.uevent_suppress = 0; + dev_set_uevent_suppress(&sch->dev, 0); kobject_uevent(&sch->dev.kobj, KOBJ_ADD); cdev->dev.groups = ccwdev_attr_groups; device_initialize(&cdev->dev); |