diff options
Diffstat (limited to 'drivers/input/input.c')
| -rw-r--r-- | drivers/input/input.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index b149c94..d3cdb13 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -29,6 +29,7 @@ MODULE_DESCRIPTION("Input core"); MODULE_LICENSE("GPL"); EXPORT_SYMBOL(input_allocate_device); +EXPORT_SYMBOL(input_free_device); EXPORT_SYMBOL(input_register_device); EXPORT_SYMBOL(input_unregister_device); EXPORT_SYMBOL(input_register_handler); @@ -872,6 +873,7 @@ struct input_dev *input_allocate_device(void) dev->dynalloc = 1; dev->cdev.class = &input_class; class_device_initialize(&dev->cdev); + mutex_init(&dev->mutex); INIT_LIST_HEAD(&dev->h_list); INIT_LIST_HEAD(&dev->node); } @@ -879,6 +881,18 @@ struct input_dev *input_allocate_device(void) return dev; } +void input_free_device(struct input_dev *dev) +{ + if (dev) { + + mutex_lock(&dev->mutex); + dev->name = dev->phys = dev->uniq = NULL; + mutex_unlock(&dev->mutex); + + input_put_device(dev); + } +} + int input_register_device(struct input_dev *dev) { static atomic_t input_no = ATOMIC_INIT(0); @@ -895,7 +909,6 @@ int input_register_device(struct input_dev *dev) return -EINVAL; } - mutex_init(&dev->mutex); set_bit(EV_SYN, dev->evbit); /* @@ -979,6 +992,10 @@ void input_unregister_device(struct input_dev *dev) sysfs_remove_group(&dev->cdev.kobj, &input_dev_attr_group); class_device_unregister(&dev->cdev); + mutex_lock(&dev->mutex); + dev->name = dev->phys = dev->uniq = NULL; + mutex_unlock(&dev->mutex); + input_wakeup_procfs_readers(); } |
