Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / isdn / divert / divert_init.c

diff --git a/kernel/drivers/isdn/divert/divert_init.c b/kernel/drivers/isdn/divert/divert_init.c
new file mode 100644 (file)
index 0000000..267dede
--- /dev/null
+++ b/kernel/drivers/isdn/divert/divert_init.c
@@ -0,0 +1,82 @@
+/* $Id divert_init.c,v 1.5.6.2 2001/01/24 22:18:17 kai Exp $
+ *
+ * Module init for DSS1 diversion services for i4l.
+ *
+ * Copyright 1999       by Werner Cornelius (werner@isdn4linux.de)
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include "isdn_divert.h"
+
+MODULE_DESCRIPTION("ISDN4Linux: Call diversion support");
+MODULE_AUTHOR("Werner Cornelius");
+MODULE_LICENSE("GPL");
+
+/****************************************/
+/* structure containing interface to hl */
+/****************************************/
+isdn_divert_if divert_if = {
+       DIVERT_IF_MAGIC,        /* magic value */
+       DIVERT_CMD_REG,         /* register cmd */
+       ll_callback,            /* callback routine from ll */
+       NULL,                   /* command still not specified */
+       NULL,                   /* drv_to_name */
+       NULL,                   /* name_to_drv */
+};
+
+/*************************/
+/* Module interface code */
+/* no cmd line parms     */
+/*************************/
+static int __init divert_init(void)
+{
+       int i;
+
+       if (divert_dev_init()) {
+               printk(KERN_WARNING "dss1_divert: cannot install device, not loaded\n");
+               return (-EIO);
+       }
+       if ((i = DIVERT_REG_NAME(&divert_if)) != DIVERT_NO_ERR) {
+               divert_dev_deinit();
+               printk(KERN_WARNING "dss1_divert: error %d registering module, not loaded\n", i);
+               return (-EIO);
+       }
+       printk(KERN_INFO "dss1_divert module successfully installed\n");
+       return (0);
+}
+
+/**********************/
+/* Module deinit code */
+/**********************/
+static void __exit divert_exit(void)
+{
+       unsigned long flags;
+       int i;
+
+       spin_lock_irqsave(&divert_lock, flags);
+       divert_if.cmd = DIVERT_CMD_REL; /* release */
+       if ((i = DIVERT_REG_NAME(&divert_if)) != DIVERT_NO_ERR) {
+               printk(KERN_WARNING "dss1_divert: error %d releasing module\n", i);
+               spin_unlock_irqrestore(&divert_lock, flags);
+               return;
+       }
+       if (divert_dev_deinit()) {
+               printk(KERN_WARNING "dss1_divert: device busy, remove cancelled\n");
+               spin_unlock_irqrestore(&divert_lock, flags);
+               return;
+       }
+       spin_unlock_irqrestore(&divert_lock, flags);
+       deleterule(-1); /* delete all rules and free mem */
+       deleteprocs();
+       printk(KERN_INFO "dss1_divert module successfully removed \n");
+}
+
+module_init(divert_init);
+module_exit(divert_exit);