- objects_p[MINOR_NR]->flags &= ~BUFFERS_ALLOCATED;
- /* Give up message buffer memory */
- if (objects_p[MINOR_NR]->fifo->buf_tx_entry)
- del_mem_from_list(objects_p[MINOR_NR]->fifo->buf_tx_entry);
- else
- CANMSG("objects_p[MINOR_NR]->fifo->buf_tx_entry is NULL\n");
- if (objects_p[MINOR_NR]->fifo->buf_rx_entry)
- del_mem_from_list(objects_p[MINOR_NR]->fifo->buf_rx_entry);
- else
- CANMSG("objects_p[MINOR_NR]->fifo->buf_rx_entry is NULL\n");
-
-/* FIXME: what about clearing chip HW status, stopping sending messages etc? */
+ struct canuser_t *canuser = (struct canuser_t*)(file->private_data);
+ struct canque_ends_t *qends;
+ struct msgobj_t *obj;
+ can_spin_irqflags_t iflags;
+
+ if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
+ CANMSG("can_close: bad canuser magic\n");
+ return -ENODEV;
+ }
+
+ obj = canuser->msgobj;
+ qends = canuser->qends;
+
+ #ifdef CAN_ENABLE_KERN_FASYNC
+
+ can_fasync(-1, file, 0);
+
+ #endif /*CAN_ENABLE_KERN_FASYNC*/
+
+ can_spin_lock_irqsave(&canuser_manipulation_lock, iflags);
+ list_del(&canuser->peers);
+ can_spin_unlock_irqrestore(&canuser_manipulation_lock, iflags);
+ canuser->qends = NULL;
+ canqueue_ends_dispose_kern(qends, file->f_flags & O_SYNC);
+
+ kfree(canuser);
+
+ can_spin_lock_irqsave(&canuser_manipulation_lock, iflags);
+ if(atomic_dec_and_test(&obj->obj_used)){
+ can_msgobj_clear_fl(obj,OPENED);
+ };
+ can_spin_unlock_irqrestore(&canuser_manipulation_lock, iflags);