TononixOS/ubports_kernel_google_msm
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Input: convert from class devices to standard devices

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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov
2007-06-14 23:32:24 -04:00
parent d63219a101
commit 9657d75c5f
6 changed files with 354 additions and 318 deletions
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84
drivers/input/evdev.c
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@@ -30,6 +30,7 @@ struct evdev {
wait_queue_head_t wait;
struct evdev_client *grab;
struct list_head client_list;
struct device dev;
};
struct evdev_client {
@@ -94,8 +95,10 @@ static int evdev_flush(struct file *file, fl_owner_t id)
return input_flush_device(&evdev->handle, file);
}
static void evdev_free(struct evdev *evdev)
static void evdev_free(struct device *dev)
{
struct evdev *evdev = container_of(dev, struct evdev, dev);
evdev_table[evdev->minor] = NULL;
kfree(evdev);
}
@@ -114,12 +117,10 @@ static int evdev_release(struct inode *inode, struct file *file)
list_del(&client->node);
kfree(client);
if (!--evdev->open) {
if (evdev->exist)
input_close_device(&evdev->handle);
else
evdev_free(evdev);
}
if (!--evdev->open && evdev->exist)
input_close_device(&evdev->handle);
put_device(&evdev->dev);
return 0;
}
@@ -139,24 +140,32 @@ static int evdev_open(struct inode *inode, struct file *file)
if (!evdev || !evdev->exist)
return -ENODEV;
get_device(&evdev->dev);
client = kzalloc(sizeof(struct evdev_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
if (!client) {
error = -ENOMEM;
goto err_put_evdev;
}
client->evdev = evdev;
list_add_tail(&client->node, &evdev->client_list);
if (!evdev->open++ && evdev->exist) {
error = input_open_device(&evdev->handle);
if (error) {
list_del(&client->node);
kfree(client);
return error;
}
if (error)
goto err_free_client;
}
file->private_data = client;
return 0;
err_free_client:
list_del(&client->node);
kfree(client);
err_put_evdev:
put_device(&evdev->dev);
return error;
}
#ifdef CONFIG_COMPAT
@@ -625,8 +634,6 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev,
const struct input_device_id *id)
{
struct evdev *evdev;
struct class_device *cdev;
dev_t devt;
int minor;
int error;
@@ -649,38 +656,32 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev,
evdev->handle.name = evdev->name;
evdev->handle.handler = handler;
evdev->handle.private = evdev;
sprintf(evdev->name, "event%d", minor);
snprintf(evdev->name, sizeof(evdev->name), "event%d", minor);
snprintf(evdev->dev.bus_id, sizeof(evdev->dev.bus_id),
"event%d", minor);
evdev->dev.class = &input_class;
evdev->dev.parent = &dev->dev;
evdev->dev.devt = MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + minor);
evdev->dev.release = evdev_free;
device_initialize(&evdev->dev);
evdev_table[minor] = evdev;
devt = MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + minor),
cdev = class_device_create(&input_class, &dev->cdev, devt,
dev->cdev.dev, evdev->name);
if (IS_ERR(cdev)) {
error = PTR_ERR(cdev);
goto err_free_evdev;
}
/* temporary symlink to keep userspace happy */
error = sysfs_create_link(&input_class.subsys.kobj,
&cdev->kobj, evdev->name);
error = device_add(&evdev->dev);
if (error)
goto err_cdev_destroy;
goto err_free_evdev;
error = input_register_handle(&evdev->handle);
if (error)
goto err_remove_link;
goto err_delete_evdev;
return 0;
err_remove_link:
sysfs_remove_link(&input_class.subsys.kobj, evdev->name);
err_cdev_destroy:
class_device_destroy(&input_class, devt);
err_delete_evdev:
device_del(&evdev->dev);
err_free_evdev:
kfree(evdev);
evdev_table[minor] = NULL;
put_device(&evdev->dev);
return error;
}
@@ -690,10 +691,8 @@ static void evdev_disconnect(struct input_handle *handle)
struct evdev_client *client;
input_unregister_handle(handle);
device_del(&evdev->dev);
sysfs_remove_link(&input_class.subsys.kobj, evdev->name);
class_device_destroy(&input_class,
MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + evdev->minor));
evdev->exist = 0;
if (evdev->open) {
@@ -702,8 +701,9 @@ static void evdev_disconnect(struct input_handle *handle)
list_for_each_entry(client, &evdev->client_list, node)
kill_fasync(&client->fasync, SIGIO, POLL_HUP);
wake_up_interruptible(&evdev->wait);
} else
evdev_free(evdev);
}
put_device(&evdev->dev);
}
static const struct input_device_id evdev_ids[] = {