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path: root/drivers/usb/serial/quatech2.c
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Diffstat (limited to 'drivers/usb/serial/quatech2.c')
-rw-r--r--drivers/usb/serial/quatech2.c114
1 files changed, 10 insertions, 104 deletions
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index 75f125ddb0c..02b0803425c 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -116,7 +116,6 @@ struct qt2_serial_private {
};
struct qt2_port_private {
- bool is_open;
u8 device_port;
spinlock_t urb_lock;
@@ -128,8 +127,6 @@ struct qt2_port_private {
u8 shadowLSR;
u8 shadowMSR;
- struct async_icount icount;
-
struct usb_serial_port *port;
};
@@ -397,7 +394,6 @@ static int qt2_open(struct tty_struct *tty, struct usb_serial_port *port)
return status;
}
- port_priv->is_open = true;
port_priv->device_port = (u8) device_port;
if (tty)
@@ -417,19 +413,11 @@ static void qt2_close(struct usb_serial_port *port)
serial = port->serial;
port_priv = usb_get_serial_port_data(port);
- port_priv->is_open = false;
-
spin_lock_irqsave(&port_priv->urb_lock, flags);
usb_kill_urb(port_priv->write_urb);
port_priv->urb_in_use = false;
spin_unlock_irqrestore(&port_priv->urb_lock, flags);
- mutex_lock(&port->serial->disc_mutex);
- if (port->serial->disconnected) {
- mutex_unlock(&port->serial->disc_mutex);
- return;
- }
-
/* flush the port transmit buffer */
i = usb_control_msg(serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
@@ -460,8 +448,6 @@ static void qt2_close(struct usb_serial_port *port)
if (i < 0)
dev_err(&port->dev, "%s - close port failed %i\n",
__func__, i);
-
- mutex_unlock(&port->serial->disc_mutex);
}
static void qt2_disconnect(struct usb_serial *serial)
@@ -494,71 +480,6 @@ static int get_serial_info(struct usb_serial_port *port,
return 0;
}
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
-{
- struct qt2_port_private *priv = usb_get_serial_port_data(port);
- struct async_icount prev, cur;
- unsigned long flags;
-
- spin_lock_irqsave(&priv->lock, flags);
- prev = priv->icount;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- while (1) {
- wait_event_interruptible(port->delta_msr_wait,
- (port->serial->disconnected ||
- (priv->icount.rng != prev.rng) ||
- (priv->icount.dsr != prev.dsr) ||
- (priv->icount.dcd != prev.dcd) ||
- (priv->icount.cts != prev.cts)));
-
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- spin_lock_irqsave(&priv->lock, flags);
- cur = priv->icount;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- if ((prev.rng == cur.rng) &&
- (prev.dsr == cur.dsr) &&
- (prev.dcd == cur.dcd) &&
- (prev.cts == cur.cts))
- return -EIO;
-
- if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) ||
- (arg & TIOCM_DSR && (prev.dsr != cur.dsr)) ||
- (arg & TIOCM_CD && (prev.dcd != cur.dcd)) ||
- (arg & TIOCM_CTS && (prev.cts != cur.cts)))
- return 0;
- }
- return 0;
-}
-
-static int qt2_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct qt2_port_private *priv = usb_get_serial_port_data(port);
- struct async_icount cnow = priv->icount;
-
- icount->cts = cnow.cts;
- icount->dsr = cnow.dsr;
- icount->rng = cnow.rng;
- icount->dcd = cnow.dcd;
- icount->rx = cnow.rx;
- icount->tx = cnow.tx;
- icount->frame = cnow.frame;
- icount->overrun = cnow.overrun;
- icount->parity = cnow.parity;
- icount->brk = cnow.brk;
- icount->buf_overrun = cnow.buf_overrun;
-
- return 0;
-}
-
static int qt2_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
@@ -568,10 +489,6 @@ static int qt2_ioctl(struct tty_struct *tty,
case TIOCGSERIAL:
return get_serial_info(port,
(struct serial_struct __user *)arg);
-
- case TIOCMIWAIT:
- return wait_modem_info(port, arg);
-
default:
break;
}
@@ -664,9 +581,7 @@ void qt2_process_read_urb(struct urb *urb)
__func__);
break;
}
-
- if (port_priv->is_open)
- tty_flip_buffer_push(&port->port);
+ tty_flip_buffer_push(&port->port);
newport = *(ch + 3);
@@ -709,8 +624,7 @@ void qt2_process_read_urb(struct urb *urb)
tty_insert_flip_string(&port->port, ch, 1);
}
- if (port_priv->is_open)
- tty_flip_buffer_push(&port->port);
+ tty_flip_buffer_push(&port->port);
}
static void qt2_write_bulk_callback(struct urb *urb)
@@ -910,12 +824,6 @@ static void qt2_break_ctl(struct tty_struct *tty, int break_state)
port_priv = usb_get_serial_port_data(port);
- if (!port_priv->is_open) {
- dev_err(&port->dev,
- "%s - port is not open\n", __func__);
- return;
- }
-
val = (break_state == -1) ? 1 : 0;
status = qt2_control_msg(port->serial->dev, QT2_BREAK_CONTROL,
@@ -961,18 +869,15 @@ static void qt2_update_msr(struct usb_serial_port *port, unsigned char *ch)
if (newMSR & UART_MSR_ANY_DELTA) {
/* update input line counters */
if (newMSR & UART_MSR_DCTS)
- port_priv->icount.cts++;
-
+ port->icount.cts++;
if (newMSR & UART_MSR_DDSR)
- port_priv->icount.dsr++;
-
+ port->icount.dsr++;
if (newMSR & UART_MSR_DDCD)
- port_priv->icount.dcd++;
-
+ port->icount.dcd++;
if (newMSR & UART_MSR_TERI)
- port_priv->icount.rng++;
+ port->icount.rng++;
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
}
}
@@ -992,7 +897,7 @@ static void qt2_update_lsr(struct usb_serial_port *port, unsigned char *ch)
port_priv->shadowLSR = newLSR;
spin_unlock_irqrestore(&port_priv->lock, flags);
- icount = &port_priv->icount;
+ icount = &port->icount;
if (newLSR & UART_LSR_BRK_ERROR_BITS) {
@@ -1102,7 +1007,8 @@ static struct usb_serial_driver qt2_device = {
.break_ctl = qt2_break_ctl,
.tiocmget = qt2_tiocmget,
.tiocmset = qt2_tiocmset,
- .get_icount = qt2_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.ioctl = qt2_ioctl,
.set_termios = qt2_set_termios,
};
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 11:51:30 +0000