diff options
Diffstat (limited to 'drivers/char/mxser.c')
| -rw-r--r-- | drivers/char/mxser.c | 47 |
1 files changed, 17 insertions, 30 deletions
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index 45d012d..3b965a6 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -470,6 +470,8 @@ static struct tty_operations mxser_ops = { .stop = mxser_stop, .start = mxser_start, .hangup = mxser_hangup, + .break_ctl = mxser_rs_break, + .wait_until_sent = mxser_wait_until_sent, .tiocmget = mxser_tiocmget, .tiocmset = mxser_tiocmset, }; @@ -492,14 +494,18 @@ static int __init mxser_module_init(void) static void __exit mxser_module_exit(void) { - int i, err = 0; + int i, err; if (verbose) printk(KERN_DEBUG "Unloading module mxser ...\n"); - if ((err |= tty_unregister_driver(mxvar_sdriver))) + err = tty_unregister_driver(mxvar_sdriver); + if (!err) + put_tty_driver(mxvar_sdriver); + else printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n"); + for (i = 0; i < MXSER_BOARDS; i++) { struct pci_dev *pdev; @@ -688,7 +694,6 @@ static int mxser_get_PCI_conf(int busnum, int devnum, int board_type, struct mxs static int mxser_init(void) { int i, m, retval, b, n; - int ret1; struct pci_dev *pdev = NULL; int index; unsigned char busnum, devnum; @@ -722,24 +727,6 @@ static int mxser_init(void) mxvar_sdriver->termios = mxvar_termios; mxvar_sdriver->termios_locked = mxvar_termios_locked; - mxvar_sdriver->open = mxser_open; - mxvar_sdriver->close = mxser_close; - mxvar_sdriver->write = mxser_write; - mxvar_sdriver->put_char = mxser_put_char; - mxvar_sdriver->flush_chars = mxser_flush_chars; - mxvar_sdriver->write_room = mxser_write_room; - mxvar_sdriver->chars_in_buffer = mxser_chars_in_buffer; - mxvar_sdriver->flush_buffer = mxser_flush_buffer; - mxvar_sdriver->ioctl = mxser_ioctl; - mxvar_sdriver->throttle = mxser_throttle; - mxvar_sdriver->unthrottle = mxser_unthrottle; - mxvar_sdriver->set_termios = mxser_set_termios; - mxvar_sdriver->stop = mxser_stop; - mxvar_sdriver->start = mxser_start; - mxvar_sdriver->hangup = mxser_hangup; - mxvar_sdriver->break_ctl = mxser_rs_break; - mxvar_sdriver->wait_until_sent = mxser_wait_until_sent; - mxvar_diagflag = 0; memset(mxvar_table, 0, MXSER_PORTS * sizeof(struct mxser_struct)); memset(&mxvar_log, 0, sizeof(struct mxser_log)); @@ -870,14 +857,11 @@ static int mxser_init(void) } #endif - ret1 = 0; - if (!(ret1 = tty_register_driver(mxvar_sdriver))) { - return 0; - } else + retval = tty_register_driver(mxvar_sdriver); + if (retval) { printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family driver !\n"); + put_tty_driver(mxvar_sdriver); - - if (ret1) { for (i = 0; i < MXSER_BOARDS; i++) { if (mxsercfg[i].board_type == -1) continue; @@ -886,10 +870,10 @@ static int mxser_init(void) //todo: release io, vector } } - return -1; + return retval; } - return (0); + return 0; } static void mxser_do_softint(void *private_) @@ -933,6 +917,9 @@ static int mxser_open(struct tty_struct *tty, struct file *filp) struct mxser_struct *info; int retval, line; + /* initialize driver_data in case something fails */ + tty->driver_data = NULL; + line = tty->index; if (line == MXSER_PORTS) return 0; @@ -995,7 +982,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) if (tty->index == MXSER_PORTS) return; if (!info) - BUG(); + return; spin_lock_irqsave(&info->slock, flags); |