*/
#define SL_CHECK_TRANSMIT
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/rtnetlink.h>
#include <linux/if_arp.h>
#include <linux/if_slip.h>
+#include <linux/delay.h>
#include <linux/init.h>
#include "slip.h"
#ifdef CONFIG_INET
static void
sl_free_bufs(struct slip *sl)
{
- void * tmp;
-
/* Free all SLIP frame buffers. */
- tmp = xchg(&sl->rbuff, NULL);
- kfree(tmp);
- tmp = xchg(&sl->xbuff, NULL);
- kfree(tmp);
+ kfree(xchg(&sl->rbuff, NULL));
+ kfree(xchg(&sl->xbuff, NULL));
#ifdef SL_INCLUDE_CSLIP
- tmp = xchg(&sl->cbuff, NULL);
- kfree(tmp);
- if ((tmp = xchg(&sl->slcomp, NULL)) != NULL)
- slhc_free(tmp);
+ kfree(xchg(&sl->cbuff, NULL));
+ slhc_free(xchg(&sl->slcomp, NULL));
#endif
}
******************************************/
-static int slip_receive_room(struct tty_struct *tty)
-{
- return 65536; /* We can handle an infinite amount of data. :-) */
-}
-
/*
* Handle the 'receiver data ready' interrupt.
* This function is called by the 'tty_io' module in the kernel when
sl->line = tty_devnum(tty);
sl->pid = current->pid;
- /* FIXME: already done before we were called - seems this can go */
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
-
if (!test_bit(SLF_INUSE, &sl->flags)) {
/* Perform the low-level SLIP initialization. */
if ((err = sl_alloc_bufs(sl, SL_MTU)) != 0)
/* Done. We have linked the TTY line to a channel. */
rtnl_unlock();
+ tty->receive_room = 65536; /* We don't flow control */
return sl->dev->base_addr;
err_free_bufs:
.close = slip_close,
.ioctl = slip_ioctl,
.receive_buf = slip_receive_buf,
- .receive_room = slip_receive_room,
.write_wakeup = slip_write_wakeup,
};
/* First of all: check for active disciplines and hangup them.
*/
do {
- if (busy) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ / 10);
- }
+ if (busy)
+ msleep_interruptible(100);
busy = 0;
for (i = 0; i < slip_maxdev; i++) {
kfree(slip_devs);
slip_devs = NULL;
- if ((i = tty_register_ldisc(N_SLIP, NULL)))
+ if ((i = tty_unregister_ldisc(N_SLIP)))
{
printk(KERN_ERR "SLIP: can't unregister line discipline (err = %d)\n", i);
}