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Input: rework handle creation code

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- consolidate code for binding handlers to a device
 - return error codes from handlers connect() methods back to input
   core and log failures

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov
2007-04-12 01:29:46 -04:00
parent 6e782584e0
commit 5b2a08262a
9 changed files with 288 additions and 125 deletions
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drivers/input/evbug.c
+22 -10
View File
@@ -38,31 +38,43 @@ MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Input driver event debug module");
MODULE_LICENSE("GPL");
static char evbug_name[] = "evbug";
static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
{
printk(KERN_DEBUG "evbug.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n",
handle->dev->phys, type, code, value);
}
static struct input_handle *evbug_connect(struct input_handler *handler, struct input_dev *dev,
const struct input_device_id *id)
static int evbug_connect(struct input_handler *handler, struct input_dev *dev,
const struct input_device_id *id)
{
struct input_handle *handle;
int error;
if (!(handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL)))
return NULL;
handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
if (!handle)
return -ENOMEM;
handle->dev = dev;
handle->handler = handler;
handle->name = evbug_name;
handle->name = "evbug";
input_open_device(handle);
error = input_register_handle(handle);
if (error)
goto err_free_handle;
error = input_open_device(handle);
if (error)
goto err_unregister_handle;
printk(KERN_DEBUG "evbug.c: Connected device: \"%s\", %s\n", dev->name, dev->phys);
return handle;
return 0;
err_unregister_handle:
input_unregister_handle(handle);
err_free_handle:
kfree(handle);
return error;
}
static void evbug_disconnect(struct input_handle *handle)
@@ -70,7 +82,7 @@ static void evbug_disconnect(struct input_handle *handle)
printk(KERN_DEBUG "evbug.c: Disconnected device: %s\n", handle->dev->phys);
input_close_device(handle);
input_unregister_handle(handle);
kfree(handle);
}