Input: do not register statically allocated devices
Do not register statically allocated input devices to prevent OOPS when attaching input interfaces since it requires class device to be properly initialized. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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438c9da514
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@ -377,7 +377,7 @@ static int input_devices_read(char *buf, char **start, off_t pos, int count, int
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list_for_each_entry(dev, &input_dev_list, node) {
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path = dev->dynalloc ? kobject_get_path(&dev->cdev.kobj, GFP_KERNEL) : NULL;
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path = kobject_get_path(&dev->cdev.kobj, GFP_KERNEL);
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len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
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dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
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@ -741,15 +741,21 @@ static void input_register_classdevice(struct input_dev *dev)
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sysfs_create_group(&dev->cdev.kobj, &input_dev_caps_attr_group);
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}
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void input_register_device(struct input_dev *dev)
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int input_register_device(struct input_dev *dev)
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{
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struct input_handle *handle;
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struct input_handler *handler;
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struct input_device_id *id;
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set_bit(EV_SYN, dev->evbit);
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if (!dev->dynalloc) {
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printk(KERN_WARNING "input: device %s is statically allocated, will not register\n"
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"Please convert to input_allocate_device() or contact dtor_core@ameritech.net\n",
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dev->name ? dev->name : "<Unknown>");
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return -EINVAL;
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}
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init_MUTEX(&dev->sem);
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set_bit(EV_SYN, dev->evbit);
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/*
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* If delay and period are pre-set by the driver, then autorepeating
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@ -767,7 +773,6 @@ void input_register_device(struct input_dev *dev)
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INIT_LIST_HEAD(&dev->h_list);
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list_add_tail(&dev->node, &input_dev_list);
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if (dev->dynalloc)
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input_register_classdevice(dev);
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list_for_each_entry(handler, &input_handler_list, node)
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@ -776,8 +781,9 @@ void input_register_device(struct input_dev *dev)
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if ((handle = handler->connect(handler, dev, id)))
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input_link_handle(handle);
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input_wakeup_procfs_readers();
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return 0;
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}
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void input_unregister_device(struct input_dev *dev)
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@ -797,11 +803,9 @@ void input_unregister_device(struct input_dev *dev)
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list_del_init(&dev->node);
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if (dev->dynalloc) {
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sysfs_remove_group(&dev->cdev.kobj, &input_dev_caps_attr_group);
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sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group);
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class_device_unregister(&dev->cdev);
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}
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input_wakeup_procfs_readers();
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}
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@ -1007,7 +1007,7 @@ static inline void input_put_device(struct input_dev *dev)
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class_device_put(&dev->cdev);
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}
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void input_register_device(struct input_dev *);
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int input_register_device(struct input_dev *);
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void input_unregister_device(struct input_dev *);
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void input_register_handler(struct input_handler *);
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