static int smbsim_serial_open(struct tty_struct *tty, struct file *filp)
{
SMBSIM_SERIAL_DEV *dev = smbsim_serial_devs + tty->index;
TRACE_MSG(TRACE_LEVEL_INFO, TRACE_FLAG_DEFAULT, "0x%p\n", dev);
return tty_port_open(&dev->tty_port, tty, filp);
}
static int acm_tty_open(struct tty_struct *tty, struct file *filp)
{
struct acm *acm = tty->driver_data;
dev_dbg(tty->dev, "%s\n", __func__);
return tty_port_open(&acm->port, tty, filp);
}
static int ram_console_tty_open(struct tty_struct *tty, struct file *filp)
{
tty->driver_data = &ram_console_port;
printk("ram_console_tty open\n");
// tty_set_ldisc(N_TTY);
return tty_port_open(&ram_console_port.port, tty, filp);
}
static int ipoctal_open(struct tty_struct *tty, struct file *file)
{
struct ipoctal_channel *channel;
channel = dev_get_drvdata(tty->dev);
tty->driver_data = channel;
return tty_port_open(&channel->tty_port, tty, file);
}
/*
* This function can be called multiple times for a given tty_struct, which is
* why we initialize bc->ttys in ehv_bc_tty_port_activate() instead.
*
* The tty layer will still call this function even if the device was not
* registered (i.e. tty_register_device() was not called). This happens
* because tty_register_device() is optional and some legacy drivers don't
* use it. So we need to check for that.
*/
static int ehv_bc_tty_open(struct tty_struct *ttys, struct file *filp)
{
struct ehv_bc_data *bc = &bcs[ttys->index];
if (!bc->dev)
return -ENODEV;
return tty_port_open(&bc->port, ttys, filp);
}
static int kgdb_nmi_tty_open(struct tty_struct *tty, struct file *file)
{
struct kgdb_nmi_tty_priv *priv = tty->driver_data;
unsigned int mode = file->f_flags & O_ACCMODE;
int ret;
ret = tty_port_open(&priv->port, tty, file);
if (!ret && (mode == O_RDONLY || mode == O_RDWR))
atomic_inc(&kgdb_nmi_num_readers);
return ret;
}
/*
* This routine is called whenever a serial port is opened. It
* enables interrupts for a serial port, linking in its async structure into
* the IRQ chain. It also performs the serial-specific
* initialization for the tty structure.
*/
static int rs_open(struct tty_struct *tty, struct file * filp)
{
struct serial_state *info = rs_table + tty->index;
struct tty_port *port = &info->port;
tty->driver_data = info;
tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
/*
* figure out which console to use (should be one already)
*/
console = console_drivers;
while (console) {
if ((console->flags & CON_ENABLED) && console->write) break;
console = console->next;
}
return tty_port_open(port, tty, filp);
}
static int ntty_open(struct tty_struct *tty, struct file *filp)
{
struct port *port = tty->driver_data;
return tty_port_open(&port->port, tty, filp);
}
static int tpk_open(struct tty_struct *tty, struct file *filp)
{
tty->driver_data = &tpk_port;
return tty_port_open(&tpk_port.port, tty, filp);
}
static int goldfish_tty_open(struct tty_struct *tty, struct file *filp)
{
struct goldfish_tty *qtty = &goldfish_ttys[tty->index];
return tty_port_open(&qtty->port, tty, filp);
}
static int smd_tty_open(struct tty_struct *tty, struct file *f)
{
struct smd_tty_info *info = smd_tty + tty->index;
return tty_port_open(&info->port, tty, f);
}
static int rpmsgtty_open(struct tty_struct *tty, struct file *filp)
{
return tty_port_open(tty->port, tty, filp);
}
static int gdm_tty_open(struct tty_struct *tty, struct file *filp)
{
struct gdm *gdm = tty->driver_data;
return tty_port_open(&gdm->port, tty, filp);
}