struct kref refcount; /* refcount for this master */
- struct list_head head; /**< each minor contains a list of masters */
struct drm_minor *minor; /**< link back to minor we are a master for */
char *unique; /**< Unique identifier: e.g., busid */
struct mutex debugfs_lock; /* Protects debugfs_list. */
struct drm_master *master; /* currently active master for this node */
- struct list_head master_list;
struct drm_mode_group mode_group;
};