leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tty-usb-oti6858: Coding style

Browse Source 
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 11:15:36 +01:00 committed by Linus Torvalds
parent 43c8f435b2
commit 2a77c81449
1 changed files with 70 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

136
drivers/usb/serial/oti6858.c
View File

@ -25,7 +25,8 @@
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* See Documentation/usb/usb-serial.txt for more information on using this driver
* See Documentation/usb/usb-serial.txt for more information on using this
* driver
*
* TODO:
* - implement correct flushing for ioctls and oti6858_close()
@ -49,7 +50,7 @@
#include <linux/spinlock.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <asm/uaccess.h>
#include <linux/uaccess.h>
#include "oti6858.h"
#define OTI6858_DESCRIPTION \
@ -135,9 +136,9 @@ struct oti6858_control_pkt {
#define OTI6858_CTRL_PKT_SIZE sizeof(struct oti6858_control_pkt)
#define OTI6858_CTRL_EQUALS_PENDING(a, priv) \
( ((a)->divisor == (priv)->pending_setup.divisor) \
(((a)->divisor == (priv)->pending_setup.divisor) \
&& ((a)->control == (priv)->pending_setup.control) \
&& ((a)->frame_fmt == (priv)->pending_setup.frame_fmt) )
&& ((a)->frame_fmt == (priv)->pending_setup.frame_fmt))
/* function prototypes */
static int oti6858_open(struct tty_struct *tty,
@ -220,7 +221,7 @@ struct oti6858_private {
struct delayed_work delayed_setup_work;
wait_queue_head_t intr_wait;
struct usb_serial_port *port; /* USB port with which associated */
struct usb_serial_port *port; /* USB port with which associated */
};
#undef dbg
@ -229,7 +230,8 @@ struct oti6858_private {
static void setup_line(struct work_struct *work)
{
struct oti6858_private *priv = container_of(work, struct oti6858_private, delayed_setup_work.work);
struct oti6858_private *priv = container_of(work,
struct oti6858_private, delayed_setup_work.work);
struct usb_serial_port *port = priv->port;
struct oti6858_control_pkt *new_setup;
unsigned long flags;
@ -237,10 +239,12 @@ static void setup_line(struct work_struct *work)
dbg("%s(port = %d)", __func__, port->number);
if ((new_setup = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL)) == NULL) {
new_setup = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL);
if (new_setup == NULL) {
dev_err(&port->dev, "%s(): out of memory!\n", __func__);
/* we will try again */
schedule_delayed_work(&priv->delayed_setup_work, msecs_to_jiffies(2));
schedule_delayed_work(&priv->delayed_setup_work,
msecs_to_jiffies(2));
return;
}
@ -256,7 +260,8 @@ static void setup_line(struct work_struct *work)
dev_err(&port->dev, "%s(): error reading status\n", __func__);
kfree(new_setup);
/* we will try again */
schedule_delayed_work(&priv->delayed_setup_work, msecs_to_jiffies(2));
schedule_delayed_work(&priv->delayed_setup_work,
msecs_to_jiffies(2));
return;
}
@ -297,7 +302,8 @@ static void setup_line(struct work_struct *work)
void send_data(struct work_struct *work)
{
struct oti6858_private *priv = container_of(work, struct oti6858_private, delayed_write_work.work);
struct oti6858_private *priv = container_of(work,
struct oti6858_private, delayed_write_work.work);
struct usb_serial_port *port = priv->port;
int count = 0, result;
unsigned long flags;
@ -308,7 +314,8 @@ void send_data(struct work_struct *work)
spin_lock_irqsave(&priv->lock, flags);
if (priv->flags.write_urb_in_use) {
spin_unlock_irqrestore(&priv->lock, flags);
schedule_delayed_work(&priv->delayed_write_work, msecs_to_jiffies(2));
schedule_delayed_work(&priv->delayed_write_work,
msecs_to_jiffies(2));
return;
}
priv->flags.write_urb_in_use = 1;
@ -359,8 +366,8 @@ void send_data(struct work_struct *work)
static int oti6858_startup(struct usb_serial *serial)
{
struct usb_serial_port *port = serial->port[0];
struct oti6858_private *priv;
struct usb_serial_port *port = serial->port[0];
struct oti6858_private *priv;
int i;
for (i = 0; i < serial->num_ports; ++i) {
@ -375,8 +382,8 @@ static int oti6858_startup(struct usb_serial *serial)
spin_lock_init(&priv->lock);
init_waitqueue_head(&priv->intr_wait);
// INIT_WORK(&priv->setup_work, setup_line, serial->port[i]);
// INIT_WORK(&priv->write_work, send_data, serial->port[i]);
/* INIT_WORK(&priv->setup_work, setup_line, serial->port[i]); */
/* INIT_WORK(&priv->write_work, send_data, serial->port[i]); */
priv->port = port;
INIT_DELAYED_WORK(&priv->delayed_setup_work, setup_line);
INIT_DELAYED_WORK(&priv->delayed_write_work, send_data);
@ -482,19 +489,19 @@ static void oti6858_set_termios(struct tty_struct *tty,
frame_fmt &= ~FMT_DATA_BITS_MASK;
switch (cflag & CSIZE) {
case CS5:
frame_fmt |= FMT_DATA_BITS_5;
break;
case CS6:
frame_fmt |= FMT_DATA_BITS_6;
break;
case CS7:
frame_fmt |= FMT_DATA_BITS_7;
break;
default:
case CS8:
frame_fmt |= FMT_DATA_BITS_8;
break;
case CS5:
frame_fmt |= FMT_DATA_BITS_5;
break;
case CS6:
frame_fmt |= FMT_DATA_BITS_6;
break;
case CS7:
frame_fmt |= FMT_DATA_BITS_7;
break;
default:
case CS8:
frame_fmt |= FMT_DATA_BITS_8;
break;
}
/* manufacturer claims that this device can work with baud rates
@ -517,19 +524,17 @@ static void oti6858_set_termios(struct tty_struct *tty,
}
frame_fmt &= ~FMT_STOP_BITS_MASK;
if ((cflag & CSTOPB) != 0) {
if ((cflag & CSTOPB) != 0)
frame_fmt |= FMT_STOP_BITS_2;
} else {
else
frame_fmt |= FMT_STOP_BITS_1;
}
frame_fmt &= ~FMT_PARITY_MASK;
if ((cflag & PARENB) != 0) {
if ((cflag & PARODD) != 0) {
if ((cflag & PARODD) != 0)
frame_fmt |= FMT_PARITY_ODD;
} else {
else
frame_fmt |= FMT_PARITY_EVEN;
}
} else {
frame_fmt |= FMT_PARITY_NONE;
}
@ -584,7 +589,8 @@ static int oti6858_open(struct tty_struct *tty,
if (port->port.count != 1)
return 0;
if ((buf = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL)) == NULL) {
buf = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL);
if (buf == NULL) {
dev_err(&port->dev, "%s(): out of memory!\n", __func__);
return -ENOMEM;
}
@ -729,11 +735,10 @@ static int oti6858_tiocmset(struct tty_struct *tty, struct file *file,
if ((clear & TIOCM_DTR) != 0)
control &= ~CONTROL_DTR_HIGH;
if (control != priv->pending_setup.control) {
if (control != priv->pending_setup.control)
priv->pending_setup.control = control;
}
spin_unlock_irqrestore(&priv->lock, flags);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
@ -785,7 +790,8 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
spin_unlock_irqrestore(&priv->lock, flags);
while (1) {
wait_event_interruptible(priv->intr_wait, priv->status.pin_state != prev);
wait_event_interruptible(priv->intr_wait,
priv->status.pin_state != prev);
if (signal_pending(current))
return -ERESTARTSYS;
@ -795,12 +801,11 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
changed = prev ^ status;
/* FIXME: check if this is correct (active high/low) */
if ( ((arg & TIOCM_RNG) && (changed & PIN_RI)) ||
((arg & TIOCM_DSR) && (changed & PIN_DSR)) ||
((arg & TIOCM_CD) && (changed & PIN_DCD)) ||
((arg & TIOCM_CTS) && (changed & PIN_CTS))) {
return 0;
}
if (((arg & TIOCM_RNG) && (changed & PIN_RI)) ||
((arg & TIOCM_DSR) && (changed & PIN_DSR)) ||
((arg & TIOCM_CD) && (changed & PIN_DCD)) ||
((arg & TIOCM_CTS) && (changed & PIN_CTS)))
return 0;
prev = status;
}
@ -817,15 +822,13 @@ static int oti6858_ioctl(struct tty_struct *tty, struct file *file,
__func__, port->number, cmd, arg);
switch (cmd) {
case TIOCMIWAIT:
dbg("%s(): TIOCMIWAIT", __func__);
return wait_modem_info(port, arg);
default:
dbg("%s(): 0x%04x not supported", __func__, cmd);
break;
case TIOCMIWAIT:
dbg("%s(): TIOCMIWAIT", __func__);
return wait_modem_info(port, arg);
default:
dbg("%s(): 0x%04x not supported", __func__, cmd);
break;
}
return -ENOIOCTLCMD;
}
@ -941,7 +944,7 @@ static void oti6858_read_int_callback(struct urb *urb)
spin_lock_irqsave(&priv->lock, flags);
if (priv->flags.write_urb_in_use == 0
&& oti6858_buf_data_avail(priv->buf) != 0) {
schedule_delayed_work(&priv->delayed_write_work,0);
schedule_delayed_work(&priv->delayed_write_work, 0);
resubmit = 0;
}
spin_unlock_irqrestore(&priv->lock, flags);
@ -950,7 +953,7 @@ static void oti6858_read_int_callback(struct urb *urb)
if (resubmit) {
int result;
// dbg("%s(): submitting interrupt urb", __func__);
/* dbg("%s(): submitting interrupt urb", __func__); */
urb->dev = port->serial->dev;
result = usb_submit_urb(urb, GFP_ATOMIC);
if (result != 0) {
@ -985,8 +988,10 @@ static void oti6858_read_bulk_callback(struct urb *urb)
}
/*
if (status == -EPROTO) {
// PL2303 mysteriously fails with -EPROTO reschedule the read
dbg("%s - caught -EPROTO, resubmitting the urb", __func__);
* PL2303 mysteriously fails with -EPROTO reschedule
the read *
dbg("%s - caught -EPROTO, resubmitting the urb",
__func__);
result = usb_submit_urb(urb, GFP_ATOMIC);
if (result)
dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __func__, result);
@ -1003,7 +1008,7 @@ static void oti6858_read_bulk_callback(struct urb *urb)
tty_flip_buffer_push(tty);
}
// schedule the interrupt urb if we are still open */
/* schedule the interrupt urb if we are still open */
if (port->port.count != 0) {
port->interrupt_in_urb->dev = port->serial->dev;
result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
@ -1055,7 +1060,7 @@ static void oti6858_write_bulk_callback(struct urb *urb)
priv->flags.write_urb_in_use = 0;
// schedule the interrupt urb if we are still open */
/* schedule the interrupt urb if we are still open */
port->interrupt_in_urb->dev = port->serial->dev;
dbg("%s(): submitting interrupt urb", __func__);
result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
@ -1130,7 +1135,7 @@ static unsigned int oti6858_buf_data_avail(struct oti6858_buf *pb)
{
if (pb == NULL)
return 0;
return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size);
return (pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size;
}
/*
@ -1143,7 +1148,7 @@ static unsigned int oti6858_buf_space_avail(struct oti6858_buf *pb)
{
if (pb == NULL)
return 0;
return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size);
return (pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size;
}
/*
@ -1230,13 +1235,12 @@ static int __init oti6858_init(void)
{
int retval;
if ((retval = usb_serial_register(&oti6858_device)) == 0) {
if ((retval = usb_register(&oti6858_driver)) != 0)
retval = usb_serial_register(&oti6858_device);
if (retval == 0) {
retval = usb_register(&oti6858_driver);
if (retval)
usb_serial_deregister(&oti6858_device);
else
return 0;
}
return retval;
}