diff options
Diffstat (limited to 'drivers/ipack/devices')
| -rw-r--r-- | drivers/ipack/devices/ipoctal.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c index 8666d2d05eef..0b3c4b8fe830 100644 --- a/drivers/ipack/devices/ipoctal.c +++ b/drivers/ipack/devices/ipoctal.c @@ -625,6 +625,22 @@ static void ipoctal_hangup(struct tty_struct *tty) wake_up_interruptible(&channel->tty_port.open_wait); } +static void ipoctal_shutdown(struct tty_struct *tty) +{ + struct ipoctal_channel *channel = tty->driver_data; + + if (channel == NULL) + return; + + iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr); + channel->rx_enable = 0; + iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr); + iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr); + iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr); + iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr); + clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags); +} + static const struct tty_operations ipoctal_fops = { .ioctl = NULL, .open = ipoctal_open, @@ -635,6 +651,7 @@ static const struct tty_operations ipoctal_fops = { .chars_in_buffer = ipoctal_chars_in_buffer, .get_icount = ipoctal_get_icount, .hangup = ipoctal_hangup, + .shutdown = ipoctal_shutdown, }; static int ipoctal_probe(struct ipack_device *dev) |