int close_pending;
int lsr_event;
struct async_icount icount;
- wait_queue_head_t delta_msr_wait; /* for handling sleeping while
- waiting for msr change to
- happen */
struct edgeport_serial *edge_serial;
struct usb_serial_port *port;
__u8 bUartMode; /* Port type, 0: RS232, etc. */
static bool ignore_cpu_rev;
static int default_uart_mode; /* RS232 */
-static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
- unsigned char *data, int length);
+static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
+ int length);
static void stop_read(struct edgeport_port *edge_port);
static int restart_read(struct edgeport_port *edge_port);
return bytes_left;
}
-static void chase_port(struct edgeport_port *port, unsigned long timeout,
- int flush)
-{
- int baud_rate;
- struct tty_struct *tty = tty_port_tty_get(&port->port->port);
- struct usb_serial *serial = port->port->serial;
- wait_queue_t wait;
- unsigned long flags;
-
- if (!tty)
- return;
-
- if (!timeout)
- timeout = (HZ * EDGE_CLOSING_WAIT)/100;
-
- /* wait for data to drain from the buffer */
- spin_lock_irqsave(&port->ep_lock, flags);
- init_waitqueue_entry(&wait, current);
- add_wait_queue(&tty->write_wait, &wait);
- for (;;) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (kfifo_len(&port->write_fifo) == 0
- || timeout == 0 || signal_pending(current)
- || serial->disconnected)
- /* disconnect */
- break;
- spin_unlock_irqrestore(&port->ep_lock, flags);
- timeout = schedule_timeout(timeout);
- spin_lock_irqsave(&port->ep_lock, flags);
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&tty->write_wait, &wait);
- if (flush)
- kfifo_reset_out(&port->write_fifo);
- spin_unlock_irqrestore(&port->ep_lock, flags);
- tty_kref_put(tty);
-
- /* wait for data to drain from the device */
- timeout += jiffies;
- while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
- && !serial->disconnected) {
- /* not disconnected */
- if (!tx_active(port))
- break;
- msleep(10);
- }
-
- /* disconnected */
- if (serial->disconnected)
- return;
-
- /* wait one more character time, based on baud rate */
- /* (tx_active doesn't seem to wait for the last byte) */
- baud_rate = port->baud_rate;
- if (baud_rate == 0)
- baud_rate = 50;
- msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
-}
-
static int choose_config(struct usb_device *dev)
{
/*
icount->dcd++;
if (msr & EDGEPORT_MSR_DELTA_RI)
icount->rng++;
- wake_up_interruptible(&edge_port->delta_msr_wait);
+ wake_up_interruptible(&edge_port->port->delta_msr_wait);
}
/* Save the new modem status */
struct async_icount *icount;
__u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
LSR_FRM_ERR | LSR_BREAK));
- struct tty_struct *tty;
dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
/* Place LSR data byte into Rx buffer */
- if (lsr_data) {
- tty = tty_port_tty_get(&edge_port->port->port);
- if (tty) {
- edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
- tty_kref_put(tty);
- }
- }
+ if (lsr_data)
+ edge_tty_recv(edge_port->port, &data, 1);
/* update input line counters */
icount = &edge_port->icount;
struct edgeport_port *edge_port = urb->context;
struct device *dev = &edge_port->port->dev;
unsigned char *data = urb->transfer_buffer;
- struct tty_struct *tty;
int retval = 0;
int port_number;
int status = urb->status;
++data;
}
- tty = tty_port_tty_get(&edge_port->port->port);
- if (tty && urb->actual_length) {
+ if (urb->actual_length) {
usb_serial_debug_data(dev, __func__, urb->actual_length, data);
if (edge_port->close_pending)
dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
__func__);
else
- edge_tty_recv(dev, tty, data, urb->actual_length);
+ edge_tty_recv(edge_port->port, data,
+ urb->actual_length);
edge_port->icount.rx += urb->actual_length;
}
- tty_kref_put(tty);
exit:
/* continue read unless stopped */
dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
}
-static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
- unsigned char *data, int length)
+static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
+ int length)
{
int queued;
- queued = tty_insert_flip_string(tty, data, length);
+ queued = tty_insert_flip_string(&port->port, data, length);
if (queued < length)
- dev_err(dev, "%s - dropping data, %d bytes lost\n",
+ dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
__func__, length - queued);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
static void edge_bulk_out_callback(struct urb *urb)
dev = port->serial->dev;
memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
- init_waitqueue_head(&edge_port->delta_msr_wait);
/* turn off loopback */
status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
++edge_serial->num_ports_open;
+ port->port.drain_delay = 1;
+
goto release_es_lock;
unlink_int_urb:
struct edgeport_serial *edge_serial;
struct edgeport_port *edge_port;
struct usb_serial *serial = port->serial;
+ unsigned long flags;
int port_number;
edge_serial = usb_get_serial_data(port->serial);
* this flag and dump add read data */
edge_port->close_pending = 1;
- /* chase the port close and flush */
- chase_port(edge_port, (HZ * closing_wait) / 100, 1);
-
usb_kill_urb(port->read_urb);
usb_kill_urb(port->write_urb);
edge_port->ep_write_urb_in_use = 0;
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ kfifo_reset_out(&edge_port->write_fifo);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
/* assuming we can still talk to the device,
* send a close port command to it */
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
int chars = 0;
unsigned long flags;
+ int ret;
if (edge_port == NULL)
return 0;
- if (edge_port->close_pending == 1)
- return 0;
spin_lock_irqsave(&edge_port->ep_lock, flags);
chars = kfifo_len(&edge_port->write_fifo);
spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+ if (!chars) {
+ ret = tx_active(edge_port);
+ if (ret > 0)
+ chars = ret;
+ }
+
dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
return chars;
}
struct serial_struct __user *retinfo)
{
struct serial_struct tmp;
+ unsigned cwait;
if (!retinfo)
return -EFAULT;
+ cwait = edge_port->port->port.closing_wait;
+ if (cwait != ASYNC_CLOSING_WAIT_NONE)
+ cwait = jiffies_to_msecs(closing_wait) / 10;
+
memset(&tmp, 0, sizeof(tmp));
tmp.type = PORT_16550A;
tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
tmp.baud_base = 9600;
tmp.close_delay = 5*HZ;
- tmp.closing_wait = closing_wait;
+ tmp.closing_wait = cwait;
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
return -EFAULT;
dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
cprev = edge_port->icount;
while (1) {
- interruptible_sleep_on(&edge_port->delta_msr_wait);
+ interruptible_sleep_on(&port->delta_msr_wait);
/* see if a signal did it */
if (signal_pending(current))
return -ERESTARTSYS;
+
+ if (port->serial->disconnected)
+ return -EIO;
+
cnow = edge_port->icount;
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
int status;
int bv = 0; /* Off */
- /* chase the port close */
- chase_port(edge_port, 0, 0);
+ tty_wait_until_sent(tty, 0);
if (break_state == -1)
bv = 1; /* On */
return ret;
}
+ port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
+
return 0;
}
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
+ .get_icount = edge_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
projects / firefly-linux-kernel-4.4.55.git / blobdiff