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authorDmitry Torokhov <dtor@insightbb.com>2007-04-12 09:29:46 +0400
committerDmitry Torokhov <dtor@insightbb.com>2007-04-12 09:29:46 +0400
commit5b2a08262a8c952fef008154933953f083ca5766 (patch)
tree47fb54c30509a4c444613a1737a212ddda3bb05d /drivers/input/joydev.c
parent6e782584e0713ea89da151333e7fe754c8f40324 (diff)
downloadlinux-5b2a08262a8c952fef008154933953f083ca5766.tar.xz
Input: rework handle creation code
- 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>
Diffstat (limited to 'drivers/input/joydev.c')
-rw-r--r--drivers/input/joydev.c48
1 files changed, 37 insertions, 11 deletions
diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c
index 9f3529ad3fda..cf24a5bde539 100644
--- a/drivers/input/joydev.c
+++ b/drivers/input/joydev.c
@@ -465,21 +465,24 @@ static const struct file_operations joydev_fops = {
.fasync = joydev_fasync,
};
-static struct input_handle *joydev_connect(struct input_handler *handler, struct input_dev *dev,
- const struct input_device_id *id)
+static int joydev_connect(struct input_handler *handler, struct input_dev *dev,
+ const struct input_device_id *id)
{
struct joydev *joydev;
struct class_device *cdev;
+ dev_t devt;
int i, j, t, minor;
+ int error;
for (minor = 0; minor < JOYDEV_MINORS && joydev_table[minor]; minor++);
if (minor == JOYDEV_MINORS) {
printk(KERN_ERR "joydev: no more free joydev devices\n");
- return NULL;
+ return -ENFILE;
}
- if (!(joydev = kzalloc(sizeof(struct joydev), GFP_KERNEL)))
- return NULL;
+ joydev = kzalloc(sizeof(struct joydev), GFP_KERNEL);
+ if (!joydev)
+ return -ENOMEM;
INIT_LIST_HEAD(&joydev->list);
init_waitqueue_head(&joydev->wait);
@@ -534,22 +537,45 @@ static struct input_handle *joydev_connect(struct input_handler *handler, struct
joydev_table[minor] = joydev;
- cdev = class_device_create(&input_class, &dev->cdev,
- MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor),
- dev->cdev.dev, joydev->name);
+ devt = MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor),
+
+ cdev = class_device_create(&input_class, &dev->cdev, devt,
+ dev->cdev.dev, joydev->name);
+ if (IS_ERR(cdev)) {
+ error = PTR_ERR(cdev);
+ goto err_free_joydev;
+ }
/* temporary symlink to keep userspace happy */
- sysfs_create_link(&input_class.subsys.kset.kobj, &cdev->kobj,
- joydev->name);
+ error = sysfs_create_link(&input_class.subsys.kset.kobj,
+ &cdev->kobj, joydev->name);
+ if (error)
+ goto err_cdev_destroy;
+
+ error = input_register_handle(&joydev->handle);
+ if (error)
+ goto err_remove_link;
+
+ return 0;
- return &joydev->handle;
+ err_remove_link:
+ sysfs_remove_link(&input_class.subsys.kset.kobj, joydev->name);
+ err_cdev_destroy:
+ class_device_destroy(&input_class, devt);
+ err_free_joydev:
+ joydev_table[minor] = NULL;
+ kfree(joydev);
+ return error;
}
+
static void joydev_disconnect(struct input_handle *handle)
{
struct joydev *joydev = handle->private;
struct joydev_list *list;
+ input_unregister_handle(handle);
+
sysfs_remove_link(&input_class.subsys.kset.kobj, joydev->name);
class_device_destroy(&input_class, MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + joydev->minor));
joydev->exist = 0;