[PATCH 26/70] belkin_sa: clean up code

From: Alan Cox
Date: Fri Jun 20 2008 - 16:24:51 EST

From: Alan Cox <alan@xxxxxxxxxx>

Coding style tidy up for belkin_sa

Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
---

drivers/usb/serial/belkin_sa.c | 148 +++++++++++++++++++++++-----------------
drivers/usb/serial/belkin_sa.h | 15 ++--
2 files changed, 94 insertions(+), 69 deletions(-)


diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c
index 1a76269..2ebe06c 100644
--- a/drivers/usb/serial/belkin_sa.c
+++ b/drivers/usb/serial/belkin_sa.c
@@ -7,13 +7,14 @@
* This program is largely derived from work by the linux-usb group
* and associated source files. Please see the usb/serial files for
* individual credits and copyrights.
- *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
- * 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:
* -- Add true modem contol line query capability. Currently we track the
@@ -28,7 +29,8 @@
* compressed all the differnent device entries into 1.
*
* 30-May-2001 gkh
- * switched from using spinlock to a semaphore, which fixes lots of problems.
+ * switched from using spinlock to a semaphore, which fixes lots of
+ * problems.
*
* 08-Apr-2001 gb
* - Identify version on module load.
@@ -41,7 +43,7 @@
* - Added support for the old Belkin and Peracom devices.
* - Made the port able to be opened multiple times.
* - Added some defaults incase the line settings are things these devices
- * can't support.
+ * can't support.
*
* 18-Oct-2000 William Greathouse
* Released into the wild (linux-usb-devel)
@@ -72,7 +74,7 @@
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include "belkin_sa.h"
@@ -87,15 +89,19 @@ static int debug;
#define DRIVER_DESC "USB Belkin Serial converter driver"

/* function prototypes for a Belkin USB Serial Adapter F5U103 */
-static int belkin_sa_startup (struct usb_serial *serial);
-static void belkin_sa_shutdown (struct usb_serial *serial);
-static int belkin_sa_open (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp);
-static void belkin_sa_close (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp);
-static void belkin_sa_read_int_callback (struct urb *urb);
-static void belkin_sa_set_termios (struct tty_struct *tty, struct usb_serial_port *port, struct ktermios * old);
-static void belkin_sa_break_ctl (struct tty_struct *tty, int break_state );
-static int belkin_sa_tiocmget (struct tty_struct *tty, struct file *file);
-static int belkin_sa_tiocmset (struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear);
+static int belkin_sa_startup(struct usb_serial *serial);
+static void belkin_sa_shutdown(struct usb_serial *serial);
+static int belkin_sa_open(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp);
+static void belkin_sa_close(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp);
+static void belkin_sa_read_int_callback(struct urb *urb);
+static void belkin_sa_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios * old);
+static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state);
+static int belkin_sa_tiocmget(struct tty_struct *tty, struct file *file);
+static int belkin_sa_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear);


static struct usb_device_id id_table_combined [] = {
@@ -105,10 +111,10 @@ static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(GOHUBS_VID, GOHUBS_PID) },
{ USB_DEVICE(GOHUBS_VID, HANDYLINK_PID) },
{ USB_DEVICE(BELKIN_DOCKSTATION_VID, BELKIN_DOCKSTATION_PID) },
- { } /* Terminating entry */
+ { } /* Terminating entry */
};

-MODULE_DEVICE_TABLE (usb, id_table_combined);
+MODULE_DEVICE_TABLE(usb, id_table_combined);

static struct usb_driver belkin_driver = {
.name = "belkin",
@@ -130,7 +136,8 @@ static struct usb_serial_driver belkin_device = {
.num_ports = 1,
.open = belkin_sa_open,
.close = belkin_sa_close,
- .read_int_callback = belkin_sa_read_int_callback, /* How we get the status info */
+ .read_int_callback = belkin_sa_read_int_callback,
+ /* How we get the status info */
.set_termios = belkin_sa_set_termios,
.break_ctl = belkin_sa_break_ctl,
.tiocmget = belkin_sa_tiocmget,
@@ -158,12 +165,12 @@ struct belkin_sa_private {
#define WDR_TIMEOUT 5000 /* default urb timeout */

/* assumes that struct usb_serial *serial is available */
-#define BSA_USB_CMD(c,v) usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), \
+#define BSA_USB_CMD(c, v) usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), \
(c), BELKIN_SA_SET_REQUEST_TYPE, \
(v), 0, NULL, 0, WDR_TIMEOUT)

/* do some startup allocations not currently performed by usb_serial_probe() */
-static int belkin_sa_startup (struct usb_serial *serial)
+static int belkin_sa_startup(struct usb_serial *serial)
{
struct usb_device *dev = serial->dev;
struct belkin_sa_private *priv;
@@ -171,20 +178,23 @@ static int belkin_sa_startup (struct usb_serial *serial)
/* allocate the private data structure */
priv = kmalloc(sizeof(struct belkin_sa_private), GFP_KERNEL);
if (!priv)
- return (-1); /* error */
+ return -1; /* error */
/* set initial values for control structures */
spin_lock_init(&priv->lock);
priv->control_state = 0;
priv->last_lsr = 0;
priv->last_msr = 0;
/* see comments at top of file */
- priv->bad_flow_control = (le16_to_cpu(dev->descriptor.bcdDevice) <= 0x0206) ? 1 : 0;
- info("bcdDevice: %04x, bfc: %d", le16_to_cpu(dev->descriptor.bcdDevice), priv->bad_flow_control);
+ priv->bad_flow_control =
+ (le16_to_cpu(dev->descriptor.bcdDevice) <= 0x0206) ? 1 : 0;
+ info("bcdDevice: %04x, bfc: %d",
+ le16_to_cpu(dev->descriptor.bcdDevice),
+ priv->bad_flow_control);

init_waitqueue_head(&serial->port[0]->write_wait);
usb_set_serial_port_data(serial->port[0], priv);
-
- return (0);
+
+ return 0;
}


@@ -192,11 +202,11 @@ static void belkin_sa_shutdown(struct usb_serial *serial)
{
struct belkin_sa_private *priv;
int i;
-
- dbg ("%s", __func__);
+
+ dbg("%s", __func__);

/* stop reads and writes on all ports */
- for (i=0; i < serial->num_ports; ++i) {
+ for (i = 0; i < serial->num_ports; ++i) {
/* My special items, the standard routines free my urbs */
priv = usb_get_serial_port_data(serial->port[i]);
kfree(priv);
@@ -204,7 +214,8 @@ static void belkin_sa_shutdown(struct usb_serial *serial)
}


-static int belkin_sa_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp)
+static int belkin_sa_open(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp)
{
int retval = 0;

@@ -233,7 +244,7 @@ exit:
} /* belkin_sa_open */


-static void belkin_sa_close (struct tty_struct *tty,
+static void belkin_sa_close(struct tty_struct *tty,
struct usb_serial_port *port, struct file *filp)
{
dbg("%s port %d", __func__, port->number);
@@ -271,7 +282,8 @@ static void belkin_sa_read_int_callback(struct urb *urb)
goto exit;
}

- usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data);
+ usb_serial_debug_data(debug, &port->dev, __func__,
+ urb->actual_length, data);

/* Handle known interrupt data */
/* ignore data[0] and data[1] */
@@ -279,7 +291,7 @@ static void belkin_sa_read_int_callback(struct urb *urb)
priv = usb_get_serial_port_data(port);
spin_lock_irqsave(&priv->lock, flags);
priv->last_msr = data[BELKIN_SA_MSR_INDEX];
-
+
/* Record Control Line states */
if (priv->last_msr & BELKIN_SA_MSR_DSR)
priv->control_state |= TIOCM_DSR;
@@ -327,9 +339,9 @@ static void belkin_sa_read_int_callback(struct urb *urb)
#endif
spin_unlock_irqrestore(&priv->lock, flags);
exit:
- retval = usb_submit_urb (urb, GFP_ATOMIC);
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
- err ("%s - usb_submit_urb failed with result %d",
+ err("%s - usb_submit_urb failed with result %d",
__func__, retval);
}

@@ -348,7 +360,7 @@ static void belkin_sa_set_termios(struct tty_struct *tty,
int bad_flow_control;
speed_t baud;
struct ktermios *termios = tty->termios;
-
+
iflag = termios->c_iflag;
cflag = termios->c_cflag;

@@ -359,20 +371,21 @@ static void belkin_sa_set_termios(struct tty_struct *tty,
control_state = priv->control_state;
bad_flow_control = priv->bad_flow_control;
spin_unlock_irqrestore(&priv->lock, flags);
-
+
old_iflag = old_termios->c_iflag;
old_cflag = old_termios->c_cflag;

/* Set the baud rate */
if ((cflag & CBAUD) != (old_cflag & CBAUD)) {
/* reassert DTR and (maybe) RTS on transition from B0 */
- if( (old_cflag&CBAUD) == B0 ) {
+ if ((old_cflag & CBAUD) == B0) {
control_state |= (TIOCM_DTR|TIOCM_RTS);
if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 1) < 0)
err("Set DTR error");
/* don't set RTS if using hardware flow control */
if (!(old_cflag & CRTSCTS))
- if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 1) < 0)
+ if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST
+ , 1) < 0)
err("Set RTS error");
}
}
@@ -392,7 +405,8 @@ static void belkin_sa_set_termios(struct tty_struct *tty,
err("Set baudrate error");
} else {
/* Disable flow control */
- if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, BELKIN_SA_FLOW_NONE) < 0)
+ if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST,
+ BELKIN_SA_FLOW_NONE) < 0)
err("Disable flowcontrol error");
/* Drop RTS and DTR */
control_state &= ~(TIOCM_DTR | TIOCM_RTS);
@@ -403,9 +417,10 @@ static void belkin_sa_set_termios(struct tty_struct *tty,
}

/* set the parity */
- if( (cflag&(PARENB|PARODD)) != (old_cflag&(PARENB|PARODD)) ) {
+ if ((cflag ^ old_cflag) & (PARENB | PARODD)) {
if (cflag & PARENB)
- urb_value = (cflag & PARODD) ? BELKIN_SA_PARITY_ODD : BELKIN_SA_PARITY_EVEN;
+ urb_value = (cflag & PARODD) ? BELKIN_SA_PARITY_ODD
+ : BELKIN_SA_PARITY_EVEN;
else
urb_value = BELKIN_SA_PARITY_NONE;
if (BSA_USB_CMD(BELKIN_SA_SET_PARITY_REQUEST, urb_value) < 0)
@@ -413,31 +428,40 @@ static void belkin_sa_set_termios(struct tty_struct *tty,
}

/* set the number of data bits */
- if( (cflag&CSIZE) != (old_cflag&CSIZE) ) {
+ if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
switch (cflag & CSIZE) {
- case CS5: urb_value = BELKIN_SA_DATA_BITS(5); break;
- case CS6: urb_value = BELKIN_SA_DATA_BITS(6); break;
- case CS7: urb_value = BELKIN_SA_DATA_BITS(7); break;
- case CS8: urb_value = BELKIN_SA_DATA_BITS(8); break;
- default: dbg("CSIZE was not CS5-CS8, using default of 8");
- urb_value = BELKIN_SA_DATA_BITS(8);
- break;
+ case CS5:
+ urb_value = BELKIN_SA_DATA_BITS(5);
+ break;
+ case CS6:
+ urb_value = BELKIN_SA_DATA_BITS(6);
+ break;
+ case CS7:
+ urb_value = BELKIN_SA_DATA_BITS(7);
+ break;
+ case CS8:
+ urb_value = BELKIN_SA_DATA_BITS(8);
+ break;
+ default: dbg("CSIZE was not CS5-CS8, using default of 8");
+ urb_value = BELKIN_SA_DATA_BITS(8);
+ break;
}
if (BSA_USB_CMD(BELKIN_SA_SET_DATA_BITS_REQUEST, urb_value) < 0)
err("Set data bits error");
}

/* set the number of stop bits */
- if( (cflag&CSTOPB) != (old_cflag&CSTOPB) ) {
- urb_value = (cflag & CSTOPB) ? BELKIN_SA_STOP_BITS(2) : BELKIN_SA_STOP_BITS(1);
- if (BSA_USB_CMD(BELKIN_SA_SET_STOP_BITS_REQUEST, urb_value) < 0)
+ if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) {
+ urb_value = (cflag & CSTOPB) ? BELKIN_SA_STOP_BITS(2)
+ : BELKIN_SA_STOP_BITS(1);
+ if (BSA_USB_CMD(BELKIN_SA_SET_STOP_BITS_REQUEST,
+ urb_value) < 0)
err("Set stop bits error");
}

/* Set flow control */
- if( (iflag&IXOFF) != (old_iflag&IXOFF)
- || (iflag&IXON) != (old_iflag&IXON)
- || (cflag&CRTSCTS) != (old_cflag&CRTSCTS) ) {
+ if (((iflag ^ old_iflag) & (IXOFF | IXON)) ||
+ ((cflag ^ old_cflag) & CRTSCTS)) {
urb_value = 0;
if ((iflag & IXOFF) || (iflag & IXON))
urb_value |= (BELKIN_SA_FLOW_OXON | BELKIN_SA_FLOW_IXON);
@@ -479,7 +503,7 @@ static int belkin_sa_tiocmget(struct tty_struct *tty, struct file *file)
struct belkin_sa_private *priv = usb_get_serial_port_data(port);
unsigned long control_state;
unsigned long flags;
-
+
dbg("%s", __func__);

spin_lock_irqsave(&priv->lock, flags);
@@ -501,7 +525,7 @@ static int belkin_sa_tiocmset(struct tty_struct *tty, struct file *file,
int retval;
int rts = 0;
int dtr = 0;
-
+
dbg("%s", __func__);

spin_lock_irqsave(&priv->lock, flags);
@@ -563,17 +587,17 @@ failed_usb_serial_register:

static void __exit belkin_sa_exit (void)
{
- usb_deregister (&belkin_driver);
+ usb_deregister(&belkin_driver);
usb_serial_deregister(&belkin_device);
}


-module_init (belkin_sa_init);
-module_exit (belkin_sa_exit);
+module_init(belkin_sa_init);
+module_exit(belkin_sa_exit);

-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_VERSION( DRIVER_VERSION );
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL");

module_param(debug, bool, S_IRUGO | S_IWUSR);
diff --git a/drivers/usb/serial/belkin_sa.h b/drivers/usb/serial/belkin_sa.h
index 9116b92..c66a673 100644
--- a/drivers/usb/serial/belkin_sa.h
+++ b/drivers/usb/serial/belkin_sa.h
@@ -7,13 +7,14 @@
* This program is largely derived from work by the linux-usb group
* and associated source files. Please see the usb/serial files for
* individual credits and copyrights.
- *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
- * 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
*
* 12-Mar-2001 gkh
* Added GoHubs GO-COM232 device id.
@@ -27,7 +28,7 @@
* adapter, so pardon any stupid mistakes. All of the information
* I am using to write this driver was acquired by using a modified
* UsbSnoop on Windows2000.
- *
+ *
*/

#ifndef __LINUX_USB_SERIAL_BSA_H
@@ -96,20 +97,20 @@

/*
* It seems that the interrupt pipe is closely modelled after the
- * 16550 register layout. This is probably because the adapter can
+ * 16550 register layout. This is probably because the adapter can
* be used in a "DOS" environment to simulate a standard hardware port.
*/
-#define BELKIN_SA_LSR_INDEX 2 /* Line Status Register */
+#define BELKIN_SA_LSR_INDEX 2 /* Line Status Register */
#define BELKIN_SA_LSR_RDR 0x01 /* receive data ready */
#define BELKIN_SA_LSR_OE 0x02 /* overrun error */
#define BELKIN_SA_LSR_PE 0x04 /* parity error */
#define BELKIN_SA_LSR_FE 0x08 /* framing error */
#define BELKIN_SA_LSR_BI 0x10 /* break indicator */
-#define BELKIN_SA_LSR_THE 0x20 /* transmit holding register empty */
+#define BELKIN_SA_LSR_THE 0x20 /* tx holding register empty */
#define BELKIN_SA_LSR_TE 0x40 /* transmit register empty */
#define BELKIN_SA_LSR_ERR 0x80 /* OE | PE | FE | BI */

-#define BELKIN_SA_MSR_INDEX 3 /* Modem Status Register */
+#define BELKIN_SA_MSR_INDEX 3 /* Modem Status Register */
#define BELKIN_SA_MSR_DCTS 0x01 /* Delta CTS */
#define BELKIN_SA_MSR_DDSR 0x02 /* Delta DSR */
#define BELKIN_SA_MSR_DRI 0x04 /* Delta RI */

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