ISDN: Remove delayed ttyI xmit

There's really no good reason to delay sending out data on a ttyI, ISDN
is slow enough anyway ;)
  
(There is one reason, i.e. allowing to coalesce multiple chars, but
that is better fixed by having the upper levels (tty) send larger
buffers)

drivers/isdn/i4l/isdn_common.c

@@ -1160,8 +1160,6 @@ isdn_timer_funct(ulong dummy)
 	if (tf & ISDN_TIMER_FAST) {
 		if (tf & ISDN_TIMER_MODEMREAD)
 			isdn_tty_readmodem();
-		if (tf & ISDN_TIMER_MODEMXMIT)
-			isdn_tty_modem_xmit();
 	}
 	if (tf) 
 	{

drivers/isdn/i4l/isdn_tty.c

@@ -26,6 +26,7 @@
 
 /* Prototypes */
 
+static void isdn_tty_modem_xmit(struct modem_info *info);
 static int isdn_tty_edit_at(const char *, int, modem_info *, int);
 static void isdn_tty_escape_timer(unsigned long data);
 static void isdn_tty_ring_timer(unsigned long data);
@@ -1312,11 +1313,7 @@ isdn_tty_write(struct tty_struct *tty, int from_user, const u_char * buf, int co
 	}
 	atomic_dec(&info->xmit_lock);
 	if ((info->xmit_count) || (skb_queue_len(&info->xmit_queue))) {
-		if (m->mdmreg[REG_DXMT] & BIT_DXMT) {
-			isdn_tty_senddown(info);
-			isdn_tty_tint(info);
-		}
-		isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
+		isdn_tty_modem_xmit(info);
 	}
 out:
 	if (from_user)
@@ -1384,7 +1381,7 @@ isdn_tty_flush_chars(struct tty_struct *tty)
 	if (isdn_tty_paranoia_check(info, tty->device, "isdn_tty_flush_chars"))
 		return;
 	if ((info->xmit_count) || (skb_queue_len(&info->xmit_queue)))
-		isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1);
+		isdn_tty_modem_xmit(info);
 }
 
 /*
@@ -3999,25 +3996,11 @@ isdn_tty_ring_timer(unsigned long data)
 	mod_timer(&info->ring_timer, jiffies + RING_TIMEOUT);
 }
 	
-/*
- * For all online tty's, try sending data to
- * the lower levels.
- */
-void
-isdn_tty_modem_xmit(void)
+static void
+isdn_tty_modem_xmit(struct modem_info *info)
 {
-	int ton = 1;
-	int i;
-
-	for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
-		modem_info *info = &isdn_mdm.info[i];
-		if (info->online) {
-			ton = 1;
-			isdn_tty_senddown(info);
-			isdn_tty_tint(info);
-		}
-	}
-	isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton);
+	isdn_tty_senddown(info);
+	isdn_tty_tint(info);
 }
 
 static void
@@ -4031,3 +4014,4 @@ isdn_tty_connect_timer(unsigned long data)
 		isdn_tty_modem_hup(info, 1);
 	}
 }
+

drivers/isdn/i4l/isdn_tty.h

@@ -98,7 +98,6 @@
 	((info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_FAX) && \
 	 (info->emu.mdmreg[REG_L3PROT] == ISDN_PROTO_L3_FCLASS2))
 
-extern void isdn_tty_modem_xmit(void);
 extern int isdn_tty_init(void);
 extern void isdn_tty_readmodem(void);
 extern int isdn_tty_find_icall(struct isdn_slot *slot, setup_parm *setup);

include/linux/isdn.h

@@ -238,8 +238,7 @@ typedef struct {
 /* Timer-delays and scheduling-flags */
 #define ISDN_TIMER_RES         4                         /* Main Timer-Resolution   */
 #define ISDN_TIMER_MODEMREAD   1
-#define ISDN_TIMER_MODEMXMIT   8
-#define ISDN_TIMER_FAST      (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMXMIT)
+#define ISDN_TIMER_FAST      (ISDN_TIMER_MODEMREAD)
 
 /* GLOBAL_FLAGS */
 #define ISDN_GLOBAL_STOPPED 1