/* close.c
* Linux CAN-bus device driver.
* Written by Arnaud Westenberg email:arnaud@wanadoo.nl
+ * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
+ * email:pisa@cmp.felk.cvut.cz
* This software is released under the GPL-License.
- * Version 0.7 6 Aug 2001
+ * Version lincan-0.2 9 Jul 2003
*/
#define __NO_VERSION__
#include <linux/module.h>
#include <linux/autoconf.h>
-#if defined (CONFIG_MODVERSIONS) && !defined (MODVERSIONS)
-#define MODVERSIONS
-#endif
-
-#if defined (MODVERSIONS)
-#include <linux/modversions.h>
-#endif
#include <linux/fs.h>
+#include <linux/version.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
+#include <linux/malloc.h>
+#else
+#include <linux/slab.h>
+#endif
#include "../include/main.h"
#include "../include/close.h"
int can_close(struct inode *inode, struct file *file)
{
- 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;
+
+ if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
+ CANMSG("can_close: bad canuser magic\n");
+ return -ENODEV;
+ }
+
+ obj = canuser->msgobj;
+ qends = canuser->qends;
+
+ list_del(&canuser->peers);
+ canqueue_ends_done_kern(qends, 1);
+ canuser->qends = NULL;
+ kfree(qends);
+
+ kfree(canuser);
+
+ if(atomic_dec_and_test(&obj->obj_used)){
+ obj->flags &= ~OBJ_OPENED;
+ /* FIXME: what about clearing chip HW status, stopping sending messages etc? */
+ };
- objects_p[MINOR_NR]->flags &= ~OPENED;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,50))
MOD_DEC_USE_COUNT;
#endif