#include <linux/errno.h> /* for -EBUSY */
#include <linux/ioport.h> /* for request_region */
#include <linux/delay.h> /* for loops_per_jiffy */
+#include <linux/smp_lock.h> /* cycle_kernel_lock() */
#include <asm/io.h> /* for inb_p, outb_p, inb, outb, etc. */
#include <asm/uaccess.h> /* for get_user, etc. */
#include <linux/wait.h> /* for wait_queue */
#include <linux/init.h> /* for __init, module_{init,exit} */
#include <linux/poll.h> /* for POLLIN, etc. */
#include <linux/dtlk.h> /* local header file for DoubleTalk values */
-#include <linux/devfs_fs_kernel.h>
-#include <linux/smp_lock.h>
#ifdef TRACING
#define TRACE_TEXT(str) printk(str);
#define TRACE_RET ((void) 0)
#endif /* TRACING */
+static void dtlk_timer_tick(unsigned long data);
static int dtlk_major;
static int dtlk_port_lpc;
static unsigned int dtlk_portlist[] =
{0x25e, 0x29e, 0x2de, 0x31e, 0x35e, 0x39e, 0};
static wait_queue_head_t dtlk_process_list;
-static struct timer_list dtlk_timer;
+static DEFINE_TIMER(dtlk_timer, dtlk_timer_tick, 0, 0);
/* prototypes for file_operations struct */
static ssize_t dtlk_read(struct file *, char __user *,
static int dtlk_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg);
-static struct file_operations dtlk_fops =
+static const struct file_operations dtlk_fops =
{
.owner = THIS_MODULE,
.read = dtlk_read,
/*
static void dtlk_handle_error(char, char, unsigned int);
*/
-static void dtlk_timer_tick(unsigned long data);
static ssize_t dtlk_read(struct file *file, char __user *buf,
size_t count, loff_t * ppos)
{
- unsigned int minor = iminor(file->f_dentry->d_inode);
+ unsigned int minor = iminor(file->f_path.dentry->d_inode);
char ch;
int i = 0, retries;
}
#endif
- if (iminor(file->f_dentry->d_inode) != DTLK_MINOR)
+ if (iminor(file->f_path.dentry->d_inode) != DTLK_MINOR)
return -EINVAL;
while (1) {
}
}
+/* Note that nobody ever sets dtlk_busy... */
static int dtlk_open(struct inode *inode, struct file *file)
{
TRACE_TEXT("(dtlk_open");
+ cycle_kernel_lock();
nonseekable_open(inode, file);
switch (iminor(inode)) {
case DTLK_MINOR:
}
TRACE_RET;
- del_timer(&dtlk_timer);
+ del_timer_sync(&dtlk_timer);
return 0;
}
static int __init dtlk_init(void)
{
+ int err;
+
dtlk_port_lpc = 0;
dtlk_port_tts = 0;
dtlk_busy = 0;
dtlk_major = register_chrdev(0, "dtlk", &dtlk_fops);
- if (dtlk_major == 0) {
+ if (dtlk_major < 0) {
printk(KERN_ERR "DoubleTalk PC - cannot register device\n");
- return 0;
+ return dtlk_major;
}
- if (dtlk_dev_probe() == 0)
- printk(", MAJOR %d\n", dtlk_major);
-
- devfs_mk_cdev(MKDEV(dtlk_major, DTLK_MINOR),
- S_IFCHR | S_IRUSR | S_IWUSR, "dtlk");
+ err = dtlk_dev_probe();
+ if (err) {
+ unregister_chrdev(dtlk_major, "dtlk");
+ return err;
+ }
+ printk(", MAJOR %d\n", dtlk_major);
- init_timer(&dtlk_timer);
- dtlk_timer.function = dtlk_timer_tick;
init_waitqueue_head(&dtlk_process_list);
return 0;
dtlk_write_tts(DTLK_CLEAR);
unregister_chrdev(dtlk_major, "dtlk");
- devfs_remove("dtlk");
release_region(dtlk_port_lpc, DTLK_IO_EXTENT);
}
release_region(dtlk_portlist[i], DTLK_IO_EXTENT);
}
- printk(KERN_INFO "\nDoubleTalk PC - not found\n");
+ printk(KERN_INFO "DoubleTalk PC - not found\n");
return -ENODEV;
}