cregit-Linux how code gets into the kernel

Release 4.7 drivers/usb/serial/empeg.c

/*
 * USB Empeg empeg-car player driver
 *
 *      Copyright (C) 2000, 2001
 *          Gary Brubaker (xavyer@ix.netcom.com)
 *
 *      Copyright (C) 1999 - 2001
 *          Greg Kroah-Hartman (greg@kroah.com)
 *
 *      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, version 2.
 *
 * See Documentation/usb/usb-serial.txt for more information on using this
 * driver
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>


#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"

#define DRIVER_DESC "USB Empeg Mark I/II Driver"


#define EMPEG_VENDOR_ID			0x084f

#define EMPEG_PRODUCT_ID		0x0001

/* function prototypes for an empeg-car player */
static int  empeg_startup(struct usb_serial *serial);
static void empeg_init_termios(struct tty_struct *tty);


static const struct usb_device_id id_table[] = {
	{ USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
	{ }					/* Terminating entry */
};

MODULE_DEVICE_TABLE(usb, id_table);


static struct usb_serial_driver empeg_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"empeg",
        },
	.id_table =		id_table,
	.num_ports =		1,
	.bulk_out_size =	256,
	.throttle =		usb_serial_generic_throttle,
	.unthrottle =		usb_serial_generic_unthrottle,
	.attach =		empeg_startup,
	.init_termios =		empeg_init_termios,
};


static struct usb_serial_driver * const serial_drivers[] = {
	&empeg_device, NULL
};


static int empeg_startup(struct usb_serial *serial) { int r; if (serial->dev->actconfig->desc.bConfigurationValue != 1) { dev_err(&serial->dev->dev, "active config #%d != 1 ??\n", serial->dev->actconfig->desc.bConfigurationValue); return -ENODEV; } r = usb_reset_configuration(serial->dev); /* continue on with initialization */ return r; }

Contributors

PersonTokensPropCommitsCommitProp
david brownelldavid brownell3449.28%125.00%
pre-gitpre-git2028.99%125.00%
greg kroah-hartmangreg kroah-hartman913.04%125.00%
oliver neukumoliver neukum68.70%125.00%
Total69100.00%4100.00%


static void empeg_init_termios(struct tty_struct *tty) { struct ktermios *termios = &tty->termios; /* * The empeg-car player wants these particular tty settings. * You could, for example, change the baud rate, however the * player only supports 115200 (currently), so there is really * no point in support for changes to the tty settings. * (at least for now) * * The default requirements for this device are: */ termios->c_iflag &= ~(IGNBRK /* disable ignore break */ | BRKINT /* disable break causes interrupt */ | PARMRK /* disable mark parity errors */ | ISTRIP /* disable clear high bit of input characters */ | INLCR /* disable translate NL to CR */ | IGNCR /* disable ignore CR */ | ICRNL /* disable translate CR to NL */ | IXON); /* disable enable XON/XOFF flow control */ termios->c_oflag &= ~OPOST; /* disable postprocess output characters */ termios->c_lflag &= ~(ECHO /* disable echo input characters */ | ECHONL /* disable echo new line */ | ICANON /* disable erase, kill, werase, and rprnt special characters */ | ISIG /* disable interrupt, quit, and suspend special characters */ | IEXTEN); /* disable non-POSIX special characters */ termios->c_cflag &= ~(CSIZE /* no size */ | PARENB /* disable parity bit */ | CBAUD); /* clear current baud rate */ termios->c_cflag |= CS8; /* character size 8 bits */ tty_encode_baud_rate(tty, 115200, 115200); }

Contributors

PersonTokensPropCommitsCommitProp
linus torvaldslinus torvalds7666.09%114.29%
alan coxalan cox2219.13%571.43%
pre-gitpre-git1714.78%114.29%
Total115100.00%7100.00%

module_usb_serial_driver(serial_drivers, id_table); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
pre-gitpre-git11731.03%28.00%
linus torvaldslinus torvalds9825.99%520.00%
johan hovoldjohan hovold5614.85%14.00%
david brownelldavid brownell349.02%14.00%
alan coxalan cox287.43%520.00%
greg kroah-hartmangreg kroah-hartman215.57%832.00%
alan sternalan stern164.24%14.00%
oliver neukumoliver neukum61.59%14.00%
marton nemethmarton nemeth10.27%14.00%
Total377100.00%25100.00%
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