[PATCH] 2.5.34 s390 fixes (9/10): ctc driver.

From: Martin Schwidefsky (schwidefsky@de.ibm.com)
Date: Wed Sep 11 2002 - 11:09:21 EST


Hi Linus,
replace old style bottom half by a tasklet in the ctc driver.

blue skies,
  Martin.

diff -urN linux-2.5.34/drivers/s390/net/ctcmain.c linux-2.5.34-s390/drivers/s390/net/ctcmain.c
--- linux-2.5.34/drivers/s390/net/ctcmain.c Mon Sep 9 19:35:08 2002
+++ linux-2.5.34-s390/drivers/s390/net/ctcmain.c Tue Jun 25 11:36:46 2002
@@ -49,6 +49,7 @@
 #include <linux/interrupt.h>
 #include <linux/timer.h>
 #include <linux/sched.h>
+#include <linux/tqueue.h>
 
 #include <linux/signal.h>
 #include <linux/string.h>
diff -urN linux-2.5.34/drivers/s390/net/ctctty.c linux-2.5.34-s390/drivers/s390/net/ctctty.c
--- linux-2.5.34/drivers/s390/net/ctctty.c Mon Sep 9 19:35:12 2002
+++ linux-2.5.34-s390/drivers/s390/net/ctctty.c Tue Jul 2 10:14:04 2002
@@ -86,7 +86,7 @@
   wait_queue_head_t open_wait;
   wait_queue_head_t close_wait;
   struct semaphore write_sem;
- struct tq_struct tq;
+ struct tasklet_struct tasklet;
   struct timer_list stoptimer;
 } ctc_tty_info;
 
@@ -272,8 +272,7 @@
          */
         skb_queue_tail(&info->rx_queue, skb);
         /* Schedule dequeuing */
- queue_task(&info->tq, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
+ tasklet_schedule(&info->tasklet);
 }
 
 static int
@@ -390,8 +389,7 @@
         skb_reserve(skb, skb_res);
         *(skb_put(skb, 1)) = c;
         skb_queue_head(&info->tx_queue, skb);
- queue_task(&info->tq, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
+ tasklet_schedule(&info->tasklet);
 }
 
 static void
@@ -400,8 +398,7 @@
         if (ctc_tty_shuttingdown)
                 return;
         info->flags |= CTC_ASYNC_TX_LINESTAT;
- queue_task(&info->tq, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
+ tasklet_schedule(&info->tasklet);
 }
 
 static void
@@ -562,8 +559,7 @@
         }
         if (skb_queue_len(&info->tx_queue)) {
                 info->lsr &= ~UART_LSR_TEMT;
- queue_task(&info->tq, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
+ tasklet_schedule(&info->tasklet);
         }
         if (from_user)
                 up(&info->write_sem);
@@ -628,8 +624,7 @@
                 return;
         if (tty->stopped || tty->hw_stopped || (!skb_queue_len(&info->tx_queue)))
                 return;
- queue_task(&info->tq, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
+ tasklet_schedule(&info->tasklet);
 }
 
 /*
@@ -1170,8 +1165,9 @@
  * the lower levels.
  */
 static void
-ctc_tty_task(ctc_tty_info *info)
+ctc_tty_task(unsigned long arg)
 {
+ ctc_tty_info *info = (void *)arg;
         unsigned long saveflags;
         int again;
 
@@ -1182,8 +1178,7 @@
                         info->lsr |= UART_LSR_TEMT;
                 again |= ctc_tty_readmodem(info);
                 if (again) {
- queue_task(&info->tq, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
+ tasklet_schedule(&info->tasklet);
                 }
         }
         spin_unlock_irqrestore(&ctc_tty_lock, saveflags);
@@ -1243,14 +1238,8 @@
         for (i = 0; i < CTC_TTY_MAX_DEVICES; i++) {
                 info = &driver->info[i];
                 init_MUTEX(&info->write_sem);
-#if LINUX_VERSION_CODE >= 0x020400
- INIT_LIST_HEAD(&info->tq.list);
-#else
- info->tq.next = NULL;
-#endif
- info->tq.sync = 0;
- info->tq.routine = (void *)(void *)ctc_tty_task;
- info->tq.data = info;
+ tasklet_init(&info->tasklet, ctc_tty_task,
+ (unsigned long) info);
                 info->magic = CTC_ASYNC_MAGIC;
                 info->line = i;
                 info->tty = 0;
@@ -1331,10 +1320,6 @@
                 kfree(driver);
                 driver = NULL;
         } else {
- int i;
-
- for (i = 0; i < CTC_TTY_MAX_DEVICES; i++)
- driver->info[i].tq.routine = NULL;
                 tty_unregister_driver(&driver->ctc_tty_device);
         }
         spin_unlock_irqrestore(&ctc_tty_lock, saveflags);

-
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