dtlk.c (32032df6c2f6c9c6b2ada2ce42322231824f70c2) dtlk.c (55929332c92e5d34d65a8f784604c92677ea3e15)
1/* -*- linux-c -*-
2 * dtlk.c - DoubleTalk PC driver for Linux
3 *
4 * Original author: Chris Pallotta <chris@allmedia.com>
5 * Current maintainer: Jim Van Zandt <jrv@vanzandt.mv.com>
6 *
7 * 2000-03-18 Jim Van Zandt: Fix polling.
8 * Eliminate dtlk_timer_active flag and separate dtlk_stop_timer

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88/* prototypes for file_operations struct */
89static ssize_t dtlk_read(struct file *, char __user *,
90 size_t nbytes, loff_t * ppos);
91static ssize_t dtlk_write(struct file *, const char __user *,
92 size_t nbytes, loff_t * ppos);
93static unsigned int dtlk_poll(struct file *, poll_table *);
94static int dtlk_open(struct inode *, struct file *);
95static int dtlk_release(struct inode *, struct file *);
1/* -*- linux-c -*-
2 * dtlk.c - DoubleTalk PC driver for Linux
3 *
4 * Original author: Chris Pallotta <chris@allmedia.com>
5 * Current maintainer: Jim Van Zandt <jrv@vanzandt.mv.com>
6 *
7 * 2000-03-18 Jim Van Zandt: Fix polling.
8 * Eliminate dtlk_timer_active flag and separate dtlk_stop_timer

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88/* prototypes for file_operations struct */
89static ssize_t dtlk_read(struct file *, char __user *,
90 size_t nbytes, loff_t * ppos);
91static ssize_t dtlk_write(struct file *, const char __user *,
92 size_t nbytes, loff_t * ppos);
93static unsigned int dtlk_poll(struct file *, poll_table *);
94static int dtlk_open(struct inode *, struct file *);
95static int dtlk_release(struct inode *, struct file *);
96static int dtlk_ioctl(struct inode *inode, struct file *file,
97 unsigned int cmd, unsigned long arg);
96static long dtlk_ioctl(struct file *file,
97 unsigned int cmd, unsigned long arg);
98
99static const struct file_operations dtlk_fops =
100{
101 .owner = THIS_MODULE,
102 .read = dtlk_read,
103 .write = dtlk_write,
104 .poll = dtlk_poll,
98
99static const struct file_operations dtlk_fops =
100{
101 .owner = THIS_MODULE,
102 .read = dtlk_read,
103 .write = dtlk_write,
104 .poll = dtlk_poll,
105 .ioctl = dtlk_ioctl,
105 .unlocked_ioctl = dtlk_ioctl,
106 .open = dtlk_open,
107 .release = dtlk_release,
108};
109
110/* local prototypes */
111static int dtlk_dev_probe(void);
112static struct dtlk_settings *dtlk_interrogate(void);
113static int dtlk_readable(void);

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258}
259
260static void dtlk_timer_tick(unsigned long data)
261{
262 TRACE_TEXT(" dtlk_timer_tick");
263 wake_up_interruptible(&dtlk_process_list);
264}
265
106 .open = dtlk_open,
107 .release = dtlk_release,
108};
109
110/* local prototypes */
111static int dtlk_dev_probe(void);
112static struct dtlk_settings *dtlk_interrogate(void);
113static int dtlk_readable(void);

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258}
259
260static void dtlk_timer_tick(unsigned long data)
261{
262 TRACE_TEXT(" dtlk_timer_tick");
263 wake_up_interruptible(&dtlk_process_list);
264}
265
266static int dtlk_ioctl(struct inode *inode,
267 struct file *file,
268 unsigned int cmd,
269 unsigned long arg)
266static long dtlk_ioctl(struct file *file,
267 unsigned int cmd,
268 unsigned long arg)
270{
271 char __user *argp = (char __user *)arg;
272 struct dtlk_settings *sp;
273 char portval;
274 TRACE_TEXT(" dtlk_ioctl");
275
276 switch (cmd) {
277
278 case DTLK_INTERROGATE:
269{
270 char __user *argp = (char __user *)arg;
271 struct dtlk_settings *sp;
272 char portval;
273 TRACE_TEXT(" dtlk_ioctl");
274
275 switch (cmd) {
276
277 case DTLK_INTERROGATE:
278 lock_kernel();
279 sp = dtlk_interrogate();
279 sp = dtlk_interrogate();
280 unlock_kernel();
280 if (copy_to_user(argp, sp, sizeof(struct dtlk_settings)))
281 return -EINVAL;
282 return 0;
283
284 case DTLK_STATUS:
285 portval = inb_p(dtlk_port_tts);
286 return put_user(portval, argp);
287

--- 374 unchanged lines hidden --- 		281 if (copy_to_user(argp, sp, sizeof(struct dtlk_settings)))
282 return -EINVAL;
283 return 0;
284
285 case DTLK_STATUS:
286 portval = inb_p(dtlk_port_tts);
287 return put_user(portval, argp);
288

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