#include <linux/smp_lock.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/device.h>
+#include <linux/delay.h>
#include <asm/io.h>
#include <asm/uaccess.h>
int stl_init(void);
static int stl_open(struct tty_struct *tty, struct file *filp);
static void stl_close(struct tty_struct *tty, struct file *filp);
-static int stl_write(struct tty_struct *tty, int from_user, const unsigned char *buf, int count);
+static int stl_write(struct tty_struct *tty, const unsigned char *buf, int count);
static void stl_putchar(struct tty_struct *tty, unsigned char ch);
static void stl_flushchars(struct tty_struct *tty);
static int stl_writeroom(struct tty_struct *tty);
static int stl_getportstruct(stlport_t __user *arg);
static int stl_getbrdstruct(stlbrd_t __user *arg);
static int stl_waitcarrier(stlport_t *portp, struct file *filp);
-static void stl_delay(int len);
static void stl_eiointr(stlbrd_t *brdp);
static void stl_echatintr(stlbrd_t *brdp);
static void stl_echmcaintr(stlbrd_t *brdp);
if (portp->openwaitcnt) {
if (portp->close_delay)
- stl_delay(portp->close_delay);
+ msleep_interruptible(jiffies_to_msecs(portp->close_delay));
wake_up_interruptible(&portp->open_wait);
}
/*****************************************************************************/
-/*
- * Wait for a specified delay period, this is not a busy-loop. It will
- * give up the processor while waiting. Unfortunately this has some
- * rather intimate knowledge of the process management stuff.
- */
-
-static void stl_delay(int len)
-{
-#ifdef DEBUG
- printk("stl_delay(len=%d)\n", len);
-#endif
- if (len > 0) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(len);
- }
-}
-
-/*****************************************************************************/
-
/*
* Write routine. Take data and stuff it in to the TX ring queue.
* If transmit interrupts are not running then start them.
*/
-static int stl_write(struct tty_struct *tty, int from_user, const unsigned char *buf, int count)
+static int stl_write(struct tty_struct *tty, const unsigned char *buf, int count)
{
stlport_t *portp;
unsigned int len, stlen;
char *head, *tail;
#ifdef DEBUG
- printk("stl_write(tty=%x,from_user=%d,buf=%x,count=%d)\n",
- (int) tty, from_user, (int) buf, count);
+ printk("stl_write(tty=%x,buf=%x,count=%d)\n",
+ (int) tty, (int) buf, count);
#endif
if ((tty == (struct tty_struct *) NULL) ||
* copy it into the TX buffer.
*/
chbuf = (unsigned char *) buf;
- if (from_user) {
- head = portp->tx.head;
- tail = portp->tx.tail;
- len = (head >= tail) ? (STL_TXBUFSIZE - (head - tail) - 1) :
- (tail - head - 1);
- count = MIN(len, count);
-
- down(&stl_tmpwritesem);
- if (copy_from_user(stl_tmpwritebuf, chbuf, count))
- return -EFAULT;
- chbuf = &stl_tmpwritebuf[0];
- }
head = portp->tx.head;
tail = portp->tx.tail;
clear_bit(ASYI_TXLOW, &portp->istate);
stl_startrxtx(portp, -1, 1);
- if (from_user)
- up(&stl_tmpwritesem);
-
return(count);
}
while (stl_datastate(portp)) {
if (signal_pending(current))
break;
- stl_delay(2);
+ msleep_interruptible(20);
if (time_after_eq(jiffies, tend))
break;
}