The original version of Arnaud Westenberg Linux CAN-bus driver

[lincan.git] / lincan / src / close.c

diff --git a/lincan/src/close.c b/lincan/src/close.c
new file mode 100644 (file)
index 0000000..7ac3574
--- /dev/null
+++ b/lincan/src/close.c
@@ -0,0 +1,45 @@
+/* close.c
+ * Linux CAN-bus device driver.
+ * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
+ * This software is released under the GPL-License.
+ * Version 0.7  6 Aug 2001
+ */
+
+#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 "../include/main.h"
+#include "../include/close.h"
+#include "../include/i82527.h"
+#include "../include/setup.h"
+
+int can_close(struct inode *inode, struct file *file)
+{
+       /* 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? */
+       
+       objects_p[MINOR_NR]->flags &= ~OPENED;
+       MOD_DEC_USE_COUNT;
+
+       return 0;
+}