summaryrefslogtreecommitdiffstats
path: root/drivers/usb/serial/io_edgeport.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/serial/io_edgeport.c')
-rw-r--r--drivers/usb/serial/io_edgeport.c102
1 files changed, 11 insertions, 91 deletions
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index b00e5cbf741f..1477e8593476 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -110,9 +110,7 @@ struct edgeport_port {
wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
- wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
- struct async_icount icount;
struct usb_serial_port *port; /* loop back to the owner of this object */
};
@@ -216,8 +214,6 @@ static void edge_break(struct tty_struct *tty, int break_state);
static int edge_tiocmget(struct tty_struct *tty);
static int edge_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
-static int edge_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount);
static int edge_startup(struct usb_serial *serial);
static void edge_disconnect(struct usb_serial *serial);
static void edge_release(struct usb_serial *serial);
@@ -565,7 +561,6 @@ static void edge_interrupt_callback(struct urb *urb)
struct device *dev;
struct edgeport_port *edge_port;
struct usb_serial_port *port;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int length = urb->actual_length;
int bytes_avail;
@@ -644,12 +639,7 @@ static void edge_interrupt_callback(struct urb *urb)
/* tell the tty driver that something
has changed */
- tty = tty_port_tty_get(
- &edge_port->port->port);
- if (tty) {
- tty_wakeup(tty);
- tty_kref_put(tty);
- }
+ tty_port_tty_wakeup(&edge_port->port->port);
/* Since we have more credit, check
if more data can be sent */
send_more_port_data(edge_serial,
@@ -738,7 +728,6 @@ static void edge_bulk_in_callback(struct urb *urb)
static void edge_bulk_out_data_callback(struct urb *urb)
{
struct edgeport_port *edge_port = urb->context;
- struct tty_struct *tty;
int status = urb->status;
if (status) {
@@ -747,14 +736,8 @@ static void edge_bulk_out_data_callback(struct urb *urb)
__func__, status);
}
- tty = tty_port_tty_get(&edge_port->port->port);
-
- if (tty && edge_port->open) {
- /* let the tty driver wakeup if it has a special
- write_wakeup function */
- tty_wakeup(tty);
- }
- tty_kref_put(tty);
+ if (edge_port->open)
+ tty_port_tty_wakeup(&edge_port->port->port);
/* Release the Write URB */
edge_port->write_in_progress = false;
@@ -773,7 +756,6 @@ static void edge_bulk_out_data_callback(struct urb *urb)
static void edge_bulk_out_cmd_callback(struct urb *urb)
{
struct edgeport_port *edge_port = urb->context;
- struct tty_struct *tty;
int status = urb->status;
atomic_dec(&CmdUrbs);
@@ -794,13 +776,9 @@ static void edge_bulk_out_cmd_callback(struct urb *urb)
return;
}
- /* Get pointer to tty */
- tty = tty_port_tty_get(&edge_port->port->port);
-
/* tell the tty driver that something has changed */
- if (tty && edge_port->open)
- tty_wakeup(tty);
- tty_kref_put(tty);
+ if (edge_port->open)
+ tty_port_tty_wakeup(&edge_port->port->port);
/* we have completed the command */
edge_port->commandPending = false;
@@ -884,12 +862,8 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
/* initialize our wait queues */
init_waitqueue_head(&edge_port->wait_open);
init_waitqueue_head(&edge_port->wait_chase);
- init_waitqueue_head(&edge_port->delta_msr_wait);
init_waitqueue_head(&edge_port->wait_command);
- /* initialize our icount structure */
- memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
-
/* initialize our port settings */
edge_port->txCredits = 0; /* Can't send any data yet */
/* Must always set this bit to enable ints! */
@@ -1316,7 +1290,7 @@ static void send_more_port_data(struct edgeport_serial *edge_serial,
/* decrement the number of credits we have by the number we just sent */
edge_port->txCredits -= count;
- edge_port->icount.tx += count;
+ edge_port->port->icount.tx += count;
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status) {
@@ -1328,7 +1302,7 @@ static void send_more_port_data(struct edgeport_serial *edge_serial,
/* revert the credits as something bad happened. */
edge_port->txCredits += count;
- edge_port->icount.tx -= count;
+ edge_port->port->icount.tx -= count;
}
dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
__func__, count, edge_port->txCredits, fifo->count);
@@ -1590,31 +1564,6 @@ static int edge_tiocmget(struct tty_struct *tty)
return result;
}
-static int edge_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct async_icount cnow;
- cnow = edge_port->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;
-
- dev_dbg(&port->dev, "%s (%d) TIOCGICOUNT RX=%d, TX=%d\n", __func__,
- port->number, icount->rx, icount->tx);
- return 0;
-}
-
static int get_serial_info(struct edgeport_port *edge_port,
struct serial_struct __user *retinfo)
{
@@ -1651,8 +1600,6 @@ static int edge_ioctl(struct tty_struct *tty,
struct usb_serial_port *port = tty->driver_data;
DEFINE_WAIT(wait);
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct async_icount cnow;
- struct async_icount cprev;
dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
@@ -1664,33 +1611,6 @@ static int edge_ioctl(struct tty_struct *tty,
case TIOCGSERIAL:
dev_dbg(&port->dev, "%s (%d) TIOCGSERIAL\n", __func__, port->number);
return get_serial_info(edge_port, (struct serial_struct __user *) arg);
-
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number);
- cprev = edge_port->icount;
- while (1) {
- prepare_to_wait(&edge_port->delta_msr_wait,
- &wait, TASK_INTERRUPTIBLE);
- schedule();
- finish_wait(&edge_port->delta_msr_wait, &wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
- cnow = edge_port->icount;
- if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
- if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
- return 0;
- }
- cprev = cnow;
- }
- /* NOTREACHED */
- break;
-
}
return -ENOIOCTLCMD;
}
@@ -1864,7 +1784,7 @@ static void process_rcvd_data(struct edgeport_serial *edge_serial,
edge_serial->rxPort);
edge_tty_recv(edge_port->port, buffer,
rxLen);
- edge_port->icount.rx += rxLen;
+ edge_port->port->icount.rx += rxLen;
}
buffer += rxLen;
}
@@ -2040,7 +1960,7 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
- icount = &edge_port->icount;
+ icount = &edge_port->port->icount;
/* update input line counters */
if (newMsr & EDGEPORT_MSR_DELTA_CTS)
@@ -2051,7 +1971,7 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
icount->dcd++;
if (newMsr & EDGEPORT_MSR_DELTA_RI)
icount->rng++;
- wake_up_interruptible(&edge_port->delta_msr_wait);
+ wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
}
/* Save the new modem status */
@@ -2086,7 +2006,7 @@ static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
edge_tty_recv(edge_port->port, &data, 1);
/* update input line counters */
- icount = &edge_port->icount;
+ icount = &edge_port->port->icount;
if (newLsr & LSR_BREAK)
icount->brk++;
if (newLsr & LSR_OVER_ERR)
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-05 12:04:21 +0100