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path: root/drivers/input/input.c
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Diffstat (limited to 'drivers/input/input.c')
-rw-r--r--drivers/input/input.c86
1 files changed, 58 insertions, 28 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 3038c268917..a90486f5e49 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -28,20 +28,6 @@ MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
MODULE_DESCRIPTION("Input core");
MODULE_LICENSE("GPL");
-EXPORT_SYMBOL(input_allocate_device);
-EXPORT_SYMBOL(input_register_device);
-EXPORT_SYMBOL(input_unregister_device);
-EXPORT_SYMBOL(input_register_handler);
-EXPORT_SYMBOL(input_unregister_handler);
-EXPORT_SYMBOL(input_grab_device);
-EXPORT_SYMBOL(input_release_device);
-EXPORT_SYMBOL(input_open_device);
-EXPORT_SYMBOL(input_close_device);
-EXPORT_SYMBOL(input_accept_process);
-EXPORT_SYMBOL(input_flush_device);
-EXPORT_SYMBOL(input_event);
-EXPORT_SYMBOL_GPL(input_class);
-
#define INPUT_DEVICES 256
static LIST_HEAD(input_dev_list);
@@ -63,11 +49,13 @@ void input_event(struct input_dev *dev, unsigned int type, unsigned int code, in
case EV_SYN:
switch (code) {
case SYN_CONFIG:
- if (dev->event) dev->event(dev, type, code, value);
+ if (dev->event)
+ dev->event(dev, type, code, value);
break;
case SYN_REPORT:
- if (dev->sync) return;
+ if (dev->sync)
+ return;
dev->sync = 1;
break;
}
@@ -136,7 +124,8 @@ void input_event(struct input_dev *dev, unsigned int type, unsigned int code, in
if (code > MSC_MAX || !test_bit(code, dev->mscbit))
return;
- if (dev->event) dev->event(dev, type, code, value);
+ if (dev->event)
+ dev->event(dev, type, code, value);
break;
@@ -146,7 +135,9 @@ void input_event(struct input_dev *dev, unsigned int type, unsigned int code, in
return;
change_bit(code, dev->led);
- if (dev->event) dev->event(dev, type, code, value);
+
+ if (dev->event)
+ dev->event(dev, type, code, value);
break;
@@ -158,21 +149,25 @@ void input_event(struct input_dev *dev, unsigned int type, unsigned int code, in
if (!!test_bit(code, dev->snd) != !!value)
change_bit(code, dev->snd);
- if (dev->event) dev->event(dev, type, code, value);
+ if (dev->event)
+ dev->event(dev, type, code, value);
break;
case EV_REP:
- if (code > REP_MAX || value < 0 || dev->rep[code] == value) return;
+ if (code > REP_MAX || value < 0 || dev->rep[code] == value)
+ return;
dev->rep[code] = value;
- if (dev->event) dev->event(dev, type, code, value);
+ if (dev->event)
+ dev->event(dev, type, code, value);
break;
case EV_FF:
- if (dev->event) dev->event(dev, type, code, value);
+ if (dev->event)
+ dev->event(dev, type, code, value);
break;
}
@@ -186,6 +181,7 @@ void input_event(struct input_dev *dev, unsigned int type, unsigned int code, in
if (handle->open)
handle->handler->event(handle, type, code, value);
}
+EXPORT_SYMBOL(input_event);
static void input_repeat_key(unsigned long data)
{
@@ -208,6 +204,7 @@ int input_accept_process(struct input_handle *handle, struct file *file)
return 0;
}
+EXPORT_SYMBOL(input_accept_process);
int input_grab_device(struct input_handle *handle)
{
@@ -217,12 +214,14 @@ int input_grab_device(struct input_handle *handle)
handle->dev->grab = handle;
return 0;
}
+EXPORT_SYMBOL(input_grab_device);
void input_release_device(struct input_handle *handle)
{
if (handle->dev->grab == handle)
handle->dev->grab = NULL;
}
+EXPORT_SYMBOL(input_release_device);
int input_open_device(struct input_handle *handle)
{
@@ -245,6 +244,7 @@ int input_open_device(struct input_handle *handle)
return err;
}
+EXPORT_SYMBOL(input_open_device);
int input_flush_device(struct input_handle* handle, struct file* file)
{
@@ -253,6 +253,7 @@ int input_flush_device(struct input_handle* handle, struct file* file)
return 0;
}
+EXPORT_SYMBOL(input_flush_device);
void input_close_device(struct input_handle *handle)
{
@@ -268,6 +269,7 @@ void input_close_device(struct input_handle *handle)
mutex_unlock(&dev->mutex);
}
+EXPORT_SYMBOL(input_close_device);
static void input_link_handle(struct input_handle *handle)
{
@@ -335,9 +337,11 @@ static inline void input_wakeup_procfs_readers(void)
static unsigned int input_proc_devices_poll(struct file *file, poll_table *wait)
{
int state = input_devices_state;
+
poll_wait(file, &input_devices_poll_wait, wait);
if (state != input_devices_state)
return POLLIN | POLLRDNORM;
+
return 0;
}
@@ -629,7 +633,7 @@ static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf)
len = input_print_modalias(buf, PAGE_SIZE, id, 1);
- return max_t(int, len, PAGE_SIZE);
+ return min_t(int, len, PAGE_SIZE);
}
static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL);
@@ -862,6 +866,7 @@ struct class input_class = {
.release = input_dev_release,
.uevent = input_dev_uevent,
};
+EXPORT_SYMBOL_GPL(input_class);
struct input_dev *input_allocate_device(void)
{
@@ -872,12 +877,27 @@ 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);
}
return dev;
}
+EXPORT_SYMBOL(input_allocate_device);
+
+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);
+ }
+}
+EXPORT_SYMBOL(input_free_device);
int input_register_device(struct input_dev *dev)
{
@@ -895,7 +915,6 @@ int input_register_device(struct input_dev *dev)
return -EINVAL;
}
- mutex_init(&dev->mutex);
set_bit(EV_SYN, dev->evbit);
/*
@@ -956,12 +975,14 @@ int input_register_device(struct input_dev *dev)
fail1: class_device_del(&dev->cdev);
return error;
}
+EXPORT_SYMBOL(input_register_device);
void input_unregister_device(struct input_dev *dev)
{
- struct list_head * node, * next;
+ struct list_head *node, *next;
- if (!dev) return;
+ if (!dev)
+ return;
del_timer_sync(&dev->timer);
@@ -977,10 +998,16 @@ void input_unregister_device(struct input_dev *dev)
sysfs_remove_group(&dev->cdev.kobj, &input_dev_caps_attr_group);
sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group);
sysfs_remove_group(&dev->cdev.kobj, &input_dev_attr_group);
+
+ mutex_lock(&dev->mutex);
+ dev->name = dev->phys = dev->uniq = NULL;
+ mutex_unlock(&dev->mutex);
+
class_device_unregister(&dev->cdev);
input_wakeup_procfs_readers();
}
+EXPORT_SYMBOL(input_unregister_device);
void input_register_handler(struct input_handler *handler)
{
@@ -988,7 +1015,8 @@ void input_register_handler(struct input_handler *handler)
struct input_handle *handle;
struct input_device_id *id;
- if (!handler) return;
+ if (!handler)
+ return;
INIT_LIST_HEAD(&handler->h_list);
@@ -1005,10 +1033,11 @@ void input_register_handler(struct input_handler *handler)
input_wakeup_procfs_readers();
}
+EXPORT_SYMBOL(input_register_handler);
void input_unregister_handler(struct input_handler *handler)
{
- struct list_head * node, * next;
+ struct list_head *node, *next;
list_for_each_safe(node, next, &handler->h_list) {
struct input_handle * handle = to_handle_h(node);
@@ -1024,6 +1053,7 @@ void input_unregister_handler(struct input_handler *handler)
input_wakeup_procfs_readers();
}
+EXPORT_SYMBOL(input_unregister_handler);
static int input_open_file(struct inode *inode, struct file *file)
{
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-01 06:44:37 +0000