diff options
Diffstat (limited to 'drivers/isdn/divert/divert_init.c')
| -rw-r--r-- | drivers/isdn/divert/divert_init.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/isdn/divert/divert_init.c b/drivers/isdn/divert/divert_init.c new file mode 100644 index 00000000..5374c25f --- /dev/null +++ b/drivers/isdn/divert/divert_init.c @@ -0,0 +1,81 @@ +/* $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); |