return -ENODEV;
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
tty->driver_data = cs;
++cs->open_count;
spin_lock_irqsave(&cs->lock, flags);
cs->tty = tty;
spin_unlock_irqrestore(&cs->lock, flags);
- tty->low_latency = 1; //FIXME test
+ tty->low_latency = 1;
}
mutex_unlock(&cs->mutex);
gig_dbg(DEBUG_IF, "%u: %s(0x%x)", cs->minor_index, __func__, cmd);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
if (!cs->connected) {
gig_dbg(DEBUG_IF, "not connected");
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
- // FIXME read from device?
retval = cs->control_state & (TIOCM_RTS|TIOCM_DTR);
mutex_unlock(&cs->mutex);
cs->minor_index, __func__, set, clear);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
if (!cs->connected) {
gig_dbg(DEBUG_IF, "not connected");
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
if (!cs->connected) {
gig_dbg(DEBUG_IF, "not connected");
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ return -ERESTARTSYS;
if (!cs->connected) {
gig_dbg(DEBUG_IF, "not connected");
return retval;
}
-/* FIXME: This function does not have error returns */
-
static int if_chars_in_buffer(struct tty_struct *tty)
{
struct cardstate *cs;
- int retval = -ENODEV;
+ int retval = 0;
cs = (struct cardstate *) tty->driver_data;
if (!cs) {
pr_err("%s: no cardstate\n", __func__);
- return -ENODEV;
+ return 0;
}
gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__);
- if (mutex_lock_interruptible(&cs->mutex))
- return -ERESTARTSYS; // FIXME -EINTR?
+ mutex_lock(&cs->mutex);
- if (!cs->connected) {
+ if (!cs->connected)
gig_dbg(DEBUG_IF, "not connected");
- retval = -ENODEV;
- } else if (!cs->open_count)
+ else if (!cs->open_count)
dev_warn(cs->dev, "%s: device not opened\n", __func__);
- else if (cs->mstate != MS_LOCKED) {
+ else if (cs->mstate != MS_LOCKED)
dev_warn(cs->dev, "can't write to unlocked device\n");
- retval = -EBUSY;
- } else
+ else
retval = cs->ops->chars_in_buffer(cs);
mutex_unlock(&cs->mutex);
gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */
else if (!cs->open_count)
dev_warn(cs->dev, "%s: device not opened\n", __func__);
- else {
- //FIXME
- }
+ else
+ gig_dbg(DEBUG_ANY, "%s: not implemented\n", __func__);
mutex_unlock(&cs->mutex);
}
gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */
else if (!cs->open_count)
dev_warn(cs->dev, "%s: device not opened\n", __func__);
- else {
- //FIXME
- }
+ else
+ gig_dbg(DEBUG_ANY, "%s: not implemented\n", __func__);
mutex_unlock(&cs->mutex);
}
goto out;
}
- // stolen from mct_u232.c
iflag = tty->termios->c_iflag;
cflag = tty->termios->c_cflag;
- old_cflag = old ? old->c_cflag : cflag; //FIXME?
+ old_cflag = old ? old->c_cflag : cflag;
gig_dbg(DEBUG_IF, "%u: iflag %x cflag %x old %x",
cs->minor_index, iflag, cflag, old_cflag);
tty_unregister_device(drv->tty, cs->minor_index);
}
+/**
+ * gigaset_if_receive() - pass a received block of data to the tty device
+ * @cs: device descriptor structure.
+ * @buffer: received data.
+ * @len: number of bytes received.
+ *
+ * Called by asyncdata/isocdata if a block of data received from the
+ * device must be sent to userspace through the ttyG* device.
+ */
void gigaset_if_receive(struct cardstate *cs,
unsigned char *buffer, size_t len)
{
struct tty_struct *tty;
spin_lock_irqsave(&cs->lock, flags);
- if ((tty = cs->tty) == NULL)
+ tty = cs->tty;
+ if (tty == NULL)
gig_dbg(DEBUG_ANY, "receive on closed device");
else {
tty_buffer_request_room(tty, len);
drv->have_tty = 0;
- if ((drv->tty = alloc_tty_driver(minors)) == NULL)
+ drv->tty = tty = alloc_tty_driver(minors);
+ if (tty == NULL)
goto enomem;
- tty = drv->tty;
tty->magic = TTY_DRIVER_MAGIC,
tty->major = GIG_MAJOR,
tty->owner = THIS_MODULE;
- tty->init_termios = tty_std_termios; //FIXME
- tty->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; //FIXME
+ tty->init_termios = tty_std_termios;
+ tty->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
tty_set_operations(tty, &if_ops);
ret = tty_register_driver(tty);