From: Alan Cox Date: Tue, 22 Jul 2008 10:09:39 +0000 (+0100) Subject: belkin_sa: clean up code X-Git-Tag: v3.12-rc1~19926 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b69c14992ecbff99d1b2b66d8ccbcffe131c6e38;p=kernel%2Fkernel-generic.git belkin_sa: clean up code Coding style tidy up for belkin_sa Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman Signed-off-by: Linus Torvalds --- 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 #include #include -#include +#include #include #include #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 */