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digi_acceleport: coding style 

Code tidy

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-07-22 11:11:02 +01:00 committed by Linus Torvalds
parent 77336828c0
commit 41ad427da1
1 changed files with 184 additions and 160 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

344
drivers/usb/serial/digi_acceleport.c
View File

@ -241,7 +241,7 @@
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <asm/uaccess.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/wait.h>
#include <linux/usb/serial.h>
@ -441,8 +441,8 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
unsigned int modem_signals, int interruptible);
static int digi_transmit_idle(struct usb_serial_port *port,
unsigned long timeout);
static void digi_rx_throttle (struct tty_struct *tty);
static void digi_rx_unthrottle (struct tty_struct *tty);
static void digi_rx_throttle(struct tty_struct *tty);
static void digi_rx_unthrottle(struct tty_struct *tty);
static void digi_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios);
static void digi_break_ctl(struct tty_struct *tty, int break_state);
@ -486,7 +486,7 @@ static struct usb_device_id id_table_4 [] = {
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, id_table_combined);
MODULE_DEVICE_TABLE(usb, id_table_combined);
static struct usb_driver digi_driver = {
.name = "digi_acceleport",
@ -555,17 +555,17 @@ static struct usb_serial_driver digi_acceleport_4_device = {
/* Functions */
/*
* Cond Wait Interruptible Timeout Irqrestore
*
* Do spin_unlock_irqrestore and interruptible_sleep_on_timeout
* so that wake ups are not lost if they occur between the unlock
* and the sleep. In other words, spin_unlock_irqrestore and
* interruptible_sleep_on_timeout are "atomic" with respect to
* wake ups. This is used to implement condition variables.
*
* interruptible_sleep_on_timeout is deprecated and has been replaced
* with the equivalent code.
*/
* Cond Wait Interruptible Timeout Irqrestore
*
* Do spin_unlock_irqrestore and interruptible_sleep_on_timeout
* so that wake ups are not lost if they occur between the unlock
* and the sleep. In other words, spin_unlock_irqrestore and
* interruptible_sleep_on_timeout are "atomic" with respect to
* wake ups. This is used to implement condition variables.
*
* interruptible_sleep_on_timeout is deprecated and has been replaced
* with the equivalent code.
*/
static long cond_wait_interruptible_timeout_irqrestore(
wait_queue_head_t *q, long timeout,
@ -584,15 +584,16 @@ __releases(lock)
/*
* Digi Wakeup Write
*
* Wake up port, line discipline, and tty processes sleeping
* on writes.
*/
* Digi Wakeup Write
*
* Wake up port, line discipline, and tty processes sleeping
* on writes.
*/
static void digi_wakeup_write_lock(struct work_struct *work)
{
struct digi_port *priv = container_of(work, struct digi_port, dp_wakeup_work);
struct digi_port *priv =
container_of(work, struct digi_port, dp_wakeup_work);
struct usb_serial_port *port = priv->dp_port;
unsigned long flags;
@ -608,15 +609,15 @@ static void digi_wakeup_write(struct usb_serial_port *port)
/*
* Digi Write OOB Command
*
* Write commands on the out of band port. Commands are 4
* bytes each, multiple commands can be sent at once, and
* no command will be split across USB packets. Returns 0
* if successful, -EINTR if interrupted while sleeping and
* the interruptible flag is true, or a negative error
* returned by usb_submit_urb.
*/
* Digi Write OOB Command
*
* Write commands on the out of band port. Commands are 4
* bytes each, multiple commands can be sent at once, and
* no command will be split across USB packets. Returns 0
* if successful, -EINTR if interrupted while sleeping and
* the interruptible flag is true, or a negative error
* returned by usb_submit_urb.
*/
static int digi_write_oob_command(struct usb_serial_port *port,
unsigned char *buf, int count, int interruptible)
@ -631,8 +632,8 @@ static int digi_write_oob_command(struct usb_serial_port *port,
dbg("digi_write_oob_command: TOP: port=%d, count=%d", oob_priv->dp_port_num, count);
spin_lock_irqsave(&oob_priv->dp_port_lock, flags);
while(count > 0) {
while(oob_port->write_urb->status == -EINPROGRESS
while (count > 0) {
while (oob_port->write_urb->status == -EINPROGRESS
|| oob_priv->dp_write_urb_in_use) {
cond_wait_interruptible_timeout_irqrestore(
&oob_port->write_wait, DIGI_RETRY_TIMEOUT,
@ -649,7 +650,8 @@ static int digi_write_oob_command(struct usb_serial_port *port,
memcpy(oob_port->write_urb->transfer_buffer, buf, len);
oob_port->write_urb->transfer_buffer_length = len;
oob_port->write_urb->dev = port->serial->dev;
if ((ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC)) == 0) {
ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC);
if (ret == 0) {
oob_priv->dp_write_urb_in_use = 1;
count -= len;
buf += len;
@ -664,16 +666,16 @@ static int digi_write_oob_command(struct usb_serial_port *port,
/*
* Digi Write In Band Command
*
* Write commands on the given port. Commands are 4
* bytes each, multiple commands can be sent at once, and
* no command will be split across USB packets. If timeout
* is non-zero, write in band command will return after
* waiting unsuccessfully for the URB status to clear for
* timeout ticks. Returns 0 if successful, or a negative
* error returned by digi_write.
*/
* Digi Write In Band Command
*
* Write commands on the given port. Commands are 4
* bytes each, multiple commands can be sent at once, and
* no command will be split across USB packets. If timeout
* is non-zero, write in band command will return after
* waiting unsuccessfully for the URB status to clear for
* timeout ticks. Returns 0 if successful, or a negative
* error returned by digi_write.
*/
static int digi_write_inb_command(struct usb_serial_port *port,
unsigned char *buf, int count, unsigned long timeout)
@ -693,9 +695,10 @@ static int digi_write_inb_command(struct usb_serial_port *port,
timeout = ULONG_MAX;
spin_lock_irqsave(&priv->dp_port_lock, flags);
while(count > 0 && ret == 0) {
while((port->write_urb->status == -EINPROGRESS
|| priv->dp_write_urb_in_use) && time_before(jiffies, timeout)) {
while (count > 0 && ret == 0) {
while ((port->write_urb->status == -EINPROGRESS
|| priv->dp_write_urb_in_use)
&& time_before(jiffies, timeout)) {
cond_wait_interruptible_timeout_irqrestore(
&port->write_wait, DIGI_RETRY_TIMEOUT,
&priv->dp_port_lock, flags);
@ -726,7 +729,8 @@ static int digi_write_inb_command(struct usb_serial_port *port,
}
port->write_urb->dev = port->serial->dev;
if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) {
ret = usb_submit_urb(port->write_urb, GFP_ATOMIC);
if (ret == 0) {
priv->dp_write_urb_in_use = 1;
priv->dp_out_buf_len = 0;
count -= len;
@ -744,14 +748,14 @@ static int digi_write_inb_command(struct usb_serial_port *port,
/*
* Digi Set Modem Signals
*
* Sets or clears DTR and RTS on the port, according to the
* modem_signals argument. Use TIOCM_DTR and TIOCM_RTS flags
* for the modem_signals argument. Returns 0 if successful,
* -EINTR if interrupted while sleeping, or a non-zero error
* returned by usb_submit_urb.
*/
* Digi Set Modem Signals
*
* Sets or clears DTR and RTS on the port, according to the
* modem_signals argument. Use TIOCM_DTR and TIOCM_RTS flags
* for the modem_signals argument. Returns 0 if successful,
* -EINTR if interrupted while sleeping, or a non-zero error
* returned by usb_submit_urb.
*/
static int digi_set_modem_signals(struct usb_serial_port *port,
unsigned int modem_signals, int interruptible)
@ -759,7 +763,7 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
int ret;
struct digi_port *port_priv = usb_get_serial_port_data(port);
struct usb_serial_port *oob_port = (struct usb_serial_port *)((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port;
struct usb_serial_port *oob_port = (struct usb_serial_port *) ((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port;
struct digi_port *oob_priv = usb_get_serial_port_data(oob_port);
unsigned char *data = oob_port->write_urb->transfer_buffer;
unsigned long flags = 0;
@ -771,7 +775,8 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
spin_lock_irqsave(&oob_priv->dp_port_lock, flags);
spin_lock(&port_priv->dp_port_lock);
while(oob_port->write_urb->status == -EINPROGRESS || oob_priv->dp_write_urb_in_use) {
while (oob_port->write_urb->status == -EINPROGRESS ||
oob_priv->dp_write_urb_in_use) {
spin_unlock(&port_priv->dp_port_lock);
cond_wait_interruptible_timeout_irqrestore(
&oob_port->write_wait, DIGI_RETRY_TIMEOUT,
@ -783,17 +788,20 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
}
data[0] = DIGI_CMD_SET_DTR_SIGNAL;
data[1] = port_priv->dp_port_num;
data[2] = (modem_signals&TIOCM_DTR) ? DIGI_DTR_ACTIVE : DIGI_DTR_INACTIVE;
data[2] = (modem_signals & TIOCM_DTR) ?
DIGI_DTR_ACTIVE : DIGI_DTR_INACTIVE;
data[3] = 0;
data[4] = DIGI_CMD_SET_RTS_SIGNAL;
data[5] = port_priv->dp_port_num;
data[6] = (modem_signals&TIOCM_RTS) ? DIGI_RTS_ACTIVE : DIGI_RTS_INACTIVE;
data[6] = (modem_signals & TIOCM_RTS) ?
DIGI_RTS_ACTIVE : DIGI_RTS_INACTIVE;
data[7] = 0;
oob_port->write_urb->transfer_buffer_length = 8;
oob_port->write_urb->dev = port->serial->dev;
if ((ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC)) == 0) {
ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC);
if (ret == 0) {
oob_priv->dp_write_urb_in_use = 1;
port_priv->dp_modem_signals =
(port_priv->dp_modem_signals&~(TIOCM_DTR|TIOCM_RTS))
@ -807,16 +815,16 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
}
/*
* Digi Transmit Idle
*
* Digi transmit idle waits, up to timeout ticks, for the transmitter
* to go idle. It returns 0 if successful or a negative error.
*
* There are race conditions here if more than one process is calling
* digi_transmit_idle on the same port at the same time. However, this
* is only called from close, and only one process can be in close on a
* port at a time, so its ok.
*/
* Digi Transmit Idle
*
* Digi transmit idle waits, up to timeout ticks, for the transmitter
* to go idle. It returns 0 if successful or a negative error.
*
* There are race conditions here if more than one process is calling
* digi_transmit_idle on the same port at the same time. However, this
* is only called from close, and only one process can be in close on a
* port at a time, so its ok.
*/
static int digi_transmit_idle(struct usb_serial_port *port,
unsigned long timeout)
@ -835,12 +843,13 @@ static int digi_transmit_idle(struct usb_serial_port *port,
timeout += jiffies;
if ((ret = digi_write_inb_command(port, buf, 2, timeout - jiffies)) != 0)
ret = digi_write_inb_command(port, buf, 2, timeout - jiffies);
if (ret != 0)
return ret;
spin_lock_irqsave(&priv->dp_port_lock, flags);
while(time_before(jiffies, timeout) && !priv->dp_transmit_idle) {
while (time_before(jiffies, timeout) && !priv->dp_transmit_idle) {
cond_wait_interruptible_timeout_irqrestore(
&priv->dp_transmit_idle_wait, DIGI_RETRY_TIMEOUT,
&priv->dp_port_lock, flags);
@ -901,7 +910,7 @@ static void digi_rx_unthrottle(struct tty_struct *tty)
}
static void digi_set_termios(struct tty_struct *tty,
static void digi_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
struct digi_port *priv = usb_get_serial_port_data(port);
@ -911,14 +920,15 @@ static void digi_set_termios(struct tty_struct *tty,
unsigned int old_cflag = old_termios->c_cflag;
unsigned char buf[32];
unsigned int modem_signals;
int arg,ret;
int arg, ret;
int i = 0;
speed_t baud;
dbg("digi_set_termios: TOP: port=%d, iflag=0x%x, old_iflag=0x%x, cflag=0x%x, old_cflag=0x%x", priv->dp_port_num, iflag, old_iflag, cflag, old_cflag);
/* set baud rate */
if ((baud = tty_get_baud_rate(tty)) != tty_termios_baud_rate(old_termios)) {
baud = tty_get_baud_rate(tty);
if (baud != tty_termios_baud_rate(old_termios)) {
arg = -1;
/* reassert DTR and (maybe) RTS on transition from B0 */
@ -932,30 +942,30 @@ static void digi_set_termios(struct tty_struct *tty,
digi_set_modem_signals(port, modem_signals, 1);
}
switch (baud) {
/* drop DTR and RTS on transition to B0 */
case 0: digi_set_modem_signals(port, 0, 1); break;
case 50: arg = DIGI_BAUD_50; break;
case 75: arg = DIGI_BAUD_75; break;
case 110: arg = DIGI_BAUD_110; break;
case 150: arg = DIGI_BAUD_150; break;
case 200: arg = DIGI_BAUD_200; break;
case 300: arg = DIGI_BAUD_300; break;
case 600: arg = DIGI_BAUD_600; break;
case 1200: arg = DIGI_BAUD_1200; break;
case 1800: arg = DIGI_BAUD_1800; break;
case 2400: arg = DIGI_BAUD_2400; break;
case 4800: arg = DIGI_BAUD_4800; break;
case 9600: arg = DIGI_BAUD_9600; break;
case 19200: arg = DIGI_BAUD_19200; break;
case 38400: arg = DIGI_BAUD_38400; break;
case 57600: arg = DIGI_BAUD_57600; break;
case 115200: arg = DIGI_BAUD_115200; break;
case 230400: arg = DIGI_BAUD_230400; break;
case 460800: arg = DIGI_BAUD_460800; break;
default:
arg = DIGI_BAUD_9600;
baud = 9600;
break;
/* drop DTR and RTS on transition to B0 */
case 0: digi_set_modem_signals(port, 0, 1); break;
case 50: arg = DIGI_BAUD_50; break;
case 75: arg = DIGI_BAUD_75; break;
case 110: arg = DIGI_BAUD_110; break;
case 150: arg = DIGI_BAUD_150; break;
case 200: arg = DIGI_BAUD_200; break;
case 300: arg = DIGI_BAUD_300; break;
case 600: arg = DIGI_BAUD_600; break;
case 1200: arg = DIGI_BAUD_1200; break;
case 1800: arg = DIGI_BAUD_1800; break;
case 2400: arg = DIGI_BAUD_2400; break;
case 4800: arg = DIGI_BAUD_4800; break;
case 9600: arg = DIGI_BAUD_9600; break;
case 19200: arg = DIGI_BAUD_19200; break;
case 38400: arg = DIGI_BAUD_38400; break;
case 57600: arg = DIGI_BAUD_57600; break;
case 115200: arg = DIGI_BAUD_115200; break;
case 230400: arg = DIGI_BAUD_230400; break;
case 460800: arg = DIGI_BAUD_460800; break;
default:
arg = DIGI_BAUD_9600;
baud = 9600;
break;
}
if (arg != -1) {
buf[i++] = DIGI_CMD_SET_BAUD_RATE;
@ -1081,7 +1091,8 @@ static void digi_set_termios(struct tty_struct *tty,
buf[i++] = arg;
buf[i++] = 0;
}
if ((ret = digi_write_oob_command(port, buf, i, 1)) != 0)
ret = digi_write_oob_command(port, buf, i, 1);
if (ret != 0)
dbg("digi_set_termios: write oob failed, ret=%d", ret);
tty_encode_baud_rate(tty, baud, baud);
}
@ -1137,7 +1148,7 @@ static int digi_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count)
{
int ret,data_len,new_len;
int ret, data_len, new_len;
struct digi_port *priv = usb_get_serial_port_data(port);
unsigned char *data = port->write_urb->transfer_buffer;
unsigned long flags = 0;
@ -1155,7 +1166,8 @@ static int digi_write(struct tty_struct *tty, struct usb_serial_port *port,
spin_lock_irqsave(&priv->dp_port_lock, flags);
/* wait for urb status clear to submit another urb */
if (port->write_urb->status == -EINPROGRESS || priv->dp_write_urb_in_use) {
if (port->write_urb->status == -EINPROGRESS ||
priv->dp_write_urb_in_use) {
/* buffer data if count is 1 (probably put_char) if possible */
if (count == 1 && priv->dp_out_buf_len < DIGI_OUT_BUF_SIZE) {
priv->dp_out_buf[priv->dp_out_buf_len++] = *buf;
@ -1190,7 +1202,8 @@ static int digi_write(struct tty_struct *tty, struct usb_serial_port *port,
/* copy in new data */
memcpy(data, buf, new_len);
if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) {
ret = usb_submit_urb(port->write_urb, GFP_ATOMIC);
if (ret == 0) {
priv->dp_write_urb_in_use = 1;
ret = new_len;
priv->dp_out_buf_len = 0;
@ -1204,7 +1217,7 @@ static int digi_write(struct tty_struct *tty, struct usb_serial_port *port,
dbg("digi_write: returning %d", ret);
return ret;
}
}
static void digi_write_bulk_callback(struct urb *urb)
{
@ -1219,13 +1232,13 @@ static void digi_write_bulk_callback(struct urb *urb)
dbg("digi_write_bulk_callback: TOP, urb->status=%d", status);
/* port and serial sanity check */
if (port == NULL || (priv=usb_get_serial_port_data(port)) == NULL) {
if (port == NULL || (priv = usb_get_serial_port_data(port)) == NULL) {
err("%s: port or port->private is NULL, status=%d",
__func__, status);
return;
}
serial = port->serial;
if (serial == NULL || (serial_priv=usb_get_serial_data(serial)) == NULL) {
if (serial == NULL || (serial_priv = usb_get_serial_data(serial)) == NULL) {
err("%s: serial or serial->private is NULL, status=%d",
__func__, status);
return;
@ -1248,13 +1261,15 @@ static void digi_write_bulk_callback(struct urb *urb)
&& priv->dp_out_buf_len > 0) {
*((unsigned char *)(port->write_urb->transfer_buffer))
= (unsigned char)DIGI_CMD_SEND_DATA;
*((unsigned char *)(port->write_urb->transfer_buffer)+1)
*((unsigned char *)(port->write_urb->transfer_buffer) + 1)
= (unsigned char)priv->dp_out_buf_len;
port->write_urb->transfer_buffer_length = priv->dp_out_buf_len+2;
port->write_urb->transfer_buffer_length =
priv->dp_out_buf_len + 2;
port->write_urb->dev = serial->dev;
memcpy(port->write_urb->transfer_buffer+2, priv->dp_out_buf,
memcpy(port->write_urb->transfer_buffer + 2, priv->dp_out_buf,
priv->dp_out_buf_len);
if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) {
ret = usb_submit_urb(port->write_urb, GFP_ATOMIC);
if (ret == 0) {
priv->dp_write_urb_in_use = 1;
priv->dp_out_buf_len = 0;
}
@ -1280,7 +1295,8 @@ static int digi_write_room(struct tty_struct *tty)
spin_lock_irqsave(&priv->dp_port_lock, flags);
if (port->write_urb->status == -EINPROGRESS || priv->dp_write_urb_in_use)
if (port->write_urb->status == -EINPROGRESS ||
priv->dp_write_urb_in_use)
room = 0;
else
room = port->bulk_out_size - 2 - priv->dp_out_buf_len;
@ -1336,7 +1352,7 @@ static int digi_open(struct tty_struct *tty, struct usb_serial_port *port,
}
/* wait for a close in progress to finish */
while(priv->dp_in_close) {
while (priv->dp_in_close) {
cond_wait_interruptible_timeout_irqrestore(
&priv->dp_close_wait, DIGI_RETRY_TIMEOUT,
&priv->dp_port_lock, flags);
@ -1346,7 +1362,7 @@ static int digi_open(struct tty_struct *tty, struct usb_serial_port *port,
}
spin_unlock_irqrestore(&priv->dp_port_lock, flags);
/* read modem signals automatically whenever they change */
buf[0] = DIGI_CMD_READ_INPUT_SIGNALS;
buf[1] = priv->dp_port_num;
@ -1359,7 +1375,8 @@ static int digi_open(struct tty_struct *tty, struct usb_serial_port *port,
buf[6] = DIGI_FLUSH_TX | DIGI_FLUSH_RX;
buf[7] = 0;
if ((ret = digi_write_oob_command(port, buf, 8, 1)) != 0)
ret = digi_write_oob_command(port, buf, 8, 1);
if (ret != 0)
dbg("digi_open: write oob failed, ret=%d", ret);
/* set termios settings */
@ -1410,9 +1427,8 @@ static void digi_close(struct tty_struct *tty, struct usb_serial_port *port,
if (port->serial->dev) {
/* wait for transmit idle */
if ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0) {
if ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0)
digi_transmit_idle(port, DIGI_CLOSE_TIMEOUT);
}
/* drop DTR and RTS */
digi_set_modem_signals(port, 0, 0);
@ -1446,11 +1462,13 @@ static void digi_close(struct tty_struct *tty, struct usb_serial_port *port,
buf[18] = DIGI_FLUSH_TX | DIGI_FLUSH_RX;
buf[19] = 0;
if ((ret = digi_write_oob_command(port, buf, 20, 0)) != 0)
ret = digi_write_oob_command(port, buf, 20, 0);
if (ret != 0)
dbg("digi_close: write oob failed, ret=%d", ret);
/* wait for final commands on oob port to complete */
prepare_to_wait(&priv->dp_flush_wait, &wait, TASK_INTERRUPTIBLE);
prepare_to_wait(&priv->dp_flush_wait, &wait,
TASK_INTERRUPTIBLE);
schedule_timeout(DIGI_CLOSE_TIMEOUT);
finish_wait(&priv->dp_flush_wait, &wait);
@ -1470,15 +1488,15 @@ exit:
/*
* Digi Startup Device
*
* Starts reads on all ports. Must be called AFTER startup, with
* urbs initialized. Returns 0 if successful, non-zero error otherwise.
*/
* Digi Startup Device
*
* Starts reads on all ports. Must be called AFTER startup, with
* urbs initialized. Returns 0 if successful, non-zero error otherwise.
*/
static int digi_startup_device(struct usb_serial *serial)
{
int i,ret = 0;
int i, ret = 0;
struct digi_serial *serial_priv = usb_get_serial_data(serial);
struct usb_serial_port *port;
@ -1496,7 +1514,8 @@ static int digi_startup_device(struct usb_serial *serial)
for (i = 0; i < serial->type->num_ports + 1; i++) {
port = serial->port[i];
port->write_urb->dev = port->serial->dev;
if ((ret = usb_submit_urb(port->read_urb, GFP_KERNEL)) != 0) {
ret = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (ret != 0) {
err("%s: usb_submit_urb failed, ret=%d, port=%d",
__func__, ret, i);
break;
@ -1517,7 +1536,7 @@ static int digi_startup(struct usb_serial *serial)
/* allocate the private data structures for all ports */
/* number of regular ports + 1 for the out-of-band port */
for(i = 0; i < serial->type->num_ports + 1; i++) {
for (i = 0; i < serial->type->num_ports + 1; i++) {
/* allocate port private structure */
priv = kmalloc(sizeof(struct digi_port), GFP_KERNEL);
if (priv == NULL) {
@ -1580,7 +1599,7 @@ static void digi_shutdown(struct usb_serial *serial)
/* free the private data structures for all ports */
/* number of regular ports + 1 for the out-of-band port */
for(i = 0; i < serial->type->num_ports + 1; i++)
for (i = 0; i < serial->type->num_ports + 1; i++)
kfree(usb_get_serial_port_data(serial->port[i]));
kfree(usb_get_serial_data(serial));
}
@ -1603,7 +1622,7 @@ static void digi_read_bulk_callback(struct urb *urb)
return;
}
if (port->serial == NULL ||
(serial_priv=usb_get_serial_data(port->serial)) == NULL) {
(serial_priv = usb_get_serial_data(port->serial)) == NULL) {
err("%s: serial is bad or serial->private is NULL, status=%d",
__func__, status);
return;
@ -1627,22 +1646,23 @@ static void digi_read_bulk_callback(struct urb *urb)
/* continue read */
urb->dev = port->serial->dev;
if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) != 0) {
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret != 0) {
err("%s: failed resubmitting urb, ret=%d, port=%d",
__func__, ret, priv->dp_port_num);
}
}
/*
* Digi Read INB Callback
*
* Digi Read INB Callback handles reads on the in band ports, sending
* the data on to the tty subsystem. When called we know port and
* port->private are not NULL and port->serial has been validated.
* It returns 0 if successful, 1 if successful but the port is
* throttled, and -1 if the sanity checks failed.
*/
/*
* Digi Read INB Callback
*
* Digi Read INB Callback handles reads on the in band ports, sending
* the data on to the tty subsystem. When called we know port and
* port->private are not NULL and port->serial has been validated.
* It returns 0 if successful, 1 if successful but the port is
* throttled, and -1 if the sanity checks failed.
*/
static int digi_read_inb_callback(struct urb *urb)
{
@ -1653,8 +1673,8 @@ static int digi_read_inb_callback(struct urb *urb)
int opcode = ((unsigned char *)urb->transfer_buffer)[0];
int len = ((unsigned char *)urb->transfer_buffer)[1];
int port_status = ((unsigned char *)urb->transfer_buffer)[2];
unsigned char *data = ((unsigned char *)urb->transfer_buffer)+3;
int flag,throttled;
unsigned char *data = ((unsigned char *)urb->transfer_buffer) + 3;
int flag, throttled;
int i;
int status = urb->status;
@ -1665,7 +1685,7 @@ static int digi_read_inb_callback(struct urb *urb)
/* short/multiple packet check */
if (urb->actual_length != len + 2) {
err("%s: INCOMPLETE OR MULTIPLE PACKET, urb->status=%d, "
err("%s: INCOMPLETE OR MULTIPLE PACKET, urb->status=%d, "
"port=%d, opcode=%d, len=%d, actual_length=%d, "
"status=%d", __func__, status, priv->dp_port_num,
opcode, len, urb->actual_length, port_status);
@ -1707,8 +1727,9 @@ static int digi_read_inb_callback(struct urb *urb)
if (flag == TTY_NORMAL)
tty_insert_flip_string(tty, data, len);
else {
for(i = 0; i < len; i++)
tty_insert_flip_char(tty, data[i], flag);
for (i = 0; i < len; i++)
tty_insert_flip_char(tty,
data[i], flag);
}
tty_flip_buffer_push(tty);
}
@ -1720,19 +1741,19 @@ static int digi_read_inb_callback(struct urb *urb)
else if (opcode != DIGI_CMD_RECEIVE_DATA)
dbg("%s: unknown opcode: %d", __func__, opcode);
return(throttled ? 1 : 0);
return throttled ? 1 : 0;
}
/*
* Digi Read OOB Callback
*
* Digi Read OOB Callback handles reads on the out of band port.
* When called we know port and port->private are not NULL and
* the port->serial is valid. It returns 0 if successful, and
* -1 if the sanity checks failed.
*/
/*
* Digi Read OOB Callback
*
* Digi Read OOB Callback handles reads on the out of band port.
* When called we know port and port->private are not NULL and
* the port->serial is valid. It returns 0 if successful, and
* -1 if the sanity checks failed.
*/
static int digi_read_oob_callback(struct urb *urb)
{
@ -1742,12 +1763,13 @@ static int digi_read_oob_callback(struct urb *urb)
struct digi_port *priv = usb_get_serial_port_data(port);
int opcode, line, status, val;
int i;
unsigned int rts;
dbg("digi_read_oob_callback: port=%d, len=%d",
priv->dp_port_num, urb->actual_length);
/* handle each oob command */
for(i = 0; i < urb->actual_length - 3;) {
for (i = 0; i < urb->actual_length - 3;) {
opcode = ((unsigned char *)urb->transfer_buffer)[i++];
line = ((unsigned char *)urb->transfer_buffer)[i++];
status = ((unsigned char *)urb->transfer_buffer)[i++];
@ -1761,27 +1783,29 @@ static int digi_read_oob_callback(struct urb *urb)
port = serial->port[line];
if ((priv=usb_get_serial_port_data(port)) == NULL)
priv = usb_get_serial_port_data(port);
if (priv == NULL)
return -1;
rts = 0;
if (port->port.count)
rts = port->port.tty->termios->c_cflag & CRTSCTS;
if (opcode == DIGI_CMD_READ_INPUT_SIGNALS) {
spin_lock(&priv->dp_port_lock);
/* convert from digi flags to termiox flags */
if (val & DIGI_READ_INPUT_SIGNALS_CTS) {
priv->dp_modem_signals |= TIOCM_CTS;
/* port must be open to use tty struct */
if (port->port.count
&& port->port.tty->termios->c_cflag & CRTSCTS) {
if (rts) {
port->port.tty->hw_stopped = 0;
digi_wakeup_write(port);
}
} else {
priv->dp_modem_signals &= ~TIOCM_CTS;
/* port must be open to use tty struct */
if (port->port.count
&& port->port.tty->termios->c_cflag & CRTSCTS) {
if (rts)
port->port.tty->hw_stopped = 1;
}
}
if (val & DIGI_READ_INPUT_SIGNALS_DSR)
priv->dp_modem_signals |= TIOCM_DSR;
@ -1818,7 +1842,7 @@ static int __init digi_init(void)
if (retval)
goto failed_acceleport_2_device;
retval = usb_serial_register(&digi_acceleport_4_device);
if (retval)
if (retval)
goto failed_acceleport_4_device;
retval = usb_register(&digi_driver);
if (retval)