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USB: io_edgeport: switch to generic get_icount implementation 

Switch to the generic get_icount implementation.

Note that the interrupt counters will no longer be reset at open which
is in accordance with which how the other drivers work.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-03-21 12:37:07 +01:00 committed by Greg Kroah-Hartman
parent 3018bb5158
commit d36a771249
2 changed files with 11 additions and 42 deletions
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45
drivers/usb/serial/io_edgeport.c
View File

@ -111,7 +111,6 @@ struct edgeport_port {
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 */
struct async_icount icount;
struct usb_serial_port *port; /* loop back to the owner of this object */
};
@ -215,8 +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);
@ -885,9 +882,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
init_waitqueue_head(&edge_port->wait_chase);
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! */
@ -1314,7 +1308,7 @@ 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) {
@ -1326,7 +1320,7 @@ 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);
@ -1588,31 +1582,6 @@ 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)
{
@ -1665,7 +1634,7 @@ static int edge_ioctl(struct tty_struct *tty,
case TIOCMIWAIT:
dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number);
cprev = edge_port->icount;
cprev = port->icount;
while (1) {
prepare_to_wait(&port->delta_msr_wait,
&wait, TASK_INTERRUPTIBLE);
@ -1678,7 +1647,7 @@ static int edge_ioctl(struct tty_struct *tty,
if (port->serial->disconnected)
return -EIO;
cnow = edge_port->icount;
cnow = port->icount;
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
return -EIO; /* no change => error */
@ -1866,7 +1835,7 @@ 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;
}
@ -2042,7 +2011,7 @@ 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)
@ -2088,7 +2057,7 @@ 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)

8
drivers/usb/serial/io_tables.h
View File

@ -116,7 +116,7 @@ static struct usb_serial_driver edgeport_2port_device = {
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
.get_icount = edge_get_icount,
.get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
@ -147,7 +147,7 @@ static struct usb_serial_driver edgeport_4port_device = {
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
.get_icount = edge_get_icount,
.get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
@ -178,7 +178,7 @@ static struct usb_serial_driver edgeport_8port_device = {
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
.get_icount = edge_get_icount,
.get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
@ -209,7 +209,7 @@ static struct usb_serial_driver epic_device = {
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
.get_icount = edge_get_icount,
.get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,