c
1 void drm_client_register(struct drm_client_dev *client)
2 {
3     if (!client || !client->dev) {
4         printk(KERN_ERR "drm_client_register: client or client->dev is NULL\n");
5         return;
6     }
7     struct drm_device *dev = client->dev;
8     mutex_lock(&dev->clientlist_mutex);
9     // Rest of the function...
