/*
- * $Id: ctctty.c,v 1.26 2004/08/04 11:06:55 mschwide Exp $
- *
* CTC / ESCON network driver, tty interface.
*
* Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
#include <linux/config.h>
#include <linux/module.h>
#include <linux/tty.h>
+#include <linux/tty_flip.h>
#include <linux/serial_reg.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
static int
ctc_tty_try_read(ctc_tty_info * info, struct sk_buff *skb)
{
- int c;
int len;
struct tty_struct *tty;
DBF_TEXT(trace, 5, __FUNCTION__);
if ((tty = info->tty)) {
if (info->mcr & UART_MCR_RTS) {
- c = TTY_FLIPBUF_SIZE - tty->flip.count;
len = skb->len;
- if (c >= len) {
- memcpy(tty->flip.char_buf_ptr, skb->data, len);
- memset(tty->flip.flag_buf_ptr, 0, len);
- tty->flip.count += len;
- tty->flip.char_buf_ptr += len;
- tty->flip.flag_buf_ptr += len;
- tty_flip_buffer_push(tty);
- kfree_skb(skb);
- return 1;
- }
+ tty_insert_flip_string(tty, skb->data, len);
+ tty_flip_buffer_push(tty);
+ kfree_skb(skb);
+ return 1;
}
}
return 0;
DBF_TEXT(trace, 5, __FUNCTION__);
if ((tty = info->tty)) {
if (info->mcr & UART_MCR_RTS) {
- int c = TTY_FLIPBUF_SIZE - tty->flip.count;
struct sk_buff *skb;
-
- if ((c > 0) && (skb = skb_dequeue(&info->rx_queue))) {
+
+ if ((skb = skb_dequeue(&info->rx_queue))) {
int len = skb->len;
- if (len > c)
- len = c;
- memcpy(tty->flip.char_buf_ptr, skb->data, len);
+ tty_insert_flip_string(tty, skb->data, len);
skb_pull(skb, len);
- memset(tty->flip.flag_buf_ptr, 0, len);
- tty->flip.count += len;
- tty->flip.char_buf_ptr += len;
- tty->flip.flag_buf_ptr += len;
tty_flip_buffer_push(tty);
if (skb->len > 0)
skb_queue_head(&info->rx_queue, skb);
else {
kfree_skb(skb);
- ret = skb_queue_len(&info->rx_queue);
+ ret = !skb_queue_empty(&info->rx_queue);
}
}
}
{
int skb_res;
struct sk_buff *skb;
-
+
DBF_TEXT(trace, 4, __FUNCTION__);
if (ctc_tty_shuttingdown)
return;
c = (count < CTC_TTY_XMIT_SIZE) ? count : CTC_TTY_XMIT_SIZE;
if (c <= 0)
break;
-
+
skb_res = info->netdev->hard_header_len + sizeof(info->mcr) +
+ sizeof(__u32);
skb = dev_alloc_skb(skb_res + c);
total += c;
count -= c;
}
- if (skb_queue_len(&info->tx_queue)) {
+ if (!skb_queue_empty(&info->tx_queue)) {
info->lsr &= ~UART_LSR_TEMT;
tasklet_schedule(&info->tasklet);
}
return;
if (ctc_tty_paranoia_check(info, tty->name, "ctc_tty_flush_chars"))
return;
- if (tty->stopped || tty->hw_stopped || (!skb_queue_len(&info->tx_queue)))
+ if (tty->stopped || tty->hw_stopped || skb_queue_empty(&info->tx_queue))
return;
tasklet_schedule(&info->tasklet);
}
printk(KERN_DEBUG "%s%d ioctl TIOCSERGETLSR\n", CTC_TTY_NAME,
info->line);
#endif
- error = verify_area(VERIFY_WRITE, (void __user *) arg, sizeof(uint));
- if (error)
- return error;
- else
+ if (access_ok(VERIFY_WRITE, (void __user *) arg, sizeof(uint)))
return ctc_tty_get_lsr_info(info, (uint __user *) arg);
+ else
+ return -EFAULT;
default:
#ifdef CTC_DEBUG_MODEM_IOCTL
printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on %s%d\n", cmd,
if (tty_hung_up_p(filp) ||
(info->flags & CTC_ASYNC_CLOSING)) {
if (info->flags & CTC_ASYNC_CLOSING)
- wait_event(info->close_wait,
+ wait_event(info->close_wait,
!(info->flags & CTC_ASYNC_CLOSING));
#ifdef MODEM_DO_RESTART
if (info->flags & CTC_ASYNC_HUP_NOTIFY)
info->tty = 0;
tty->closing = 0;
if (info->blocked_open) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ/2);
+ msleep_interruptible(500);
wake_up_interruptible(&info->open_wait);
}
info->flags &= ~(CTC_ASYNC_NORMAL_ACTIVE | CTC_ASYNC_CLOSING);
void
ctc_tty_cleanup(void) {
unsigned long saveflags;
-
+
DBF_TEXT(trace, 2, __FUNCTION__);
spin_lock_irqsave(&ctc_tty_lock, saveflags);
ctc_tty_shuttingdown = 1;