v4.19.13 snapshot.
diff --git a/drivers/isdn/hisax/fsm.c b/drivers/isdn/hisax/fsm.c
new file mode 100644
index 0000000..80ba82f
--- /dev/null
+++ b/drivers/isdn/hisax/fsm.c
@@ -0,0 +1,161 @@
+/* $Id: fsm.c,v 1.14.6.4 2001/09/23 22:24:47 kai Exp $
+ *
+ * Finite state machine
+ *
+ * Author Karsten Keil
+ * Copyright by Karsten Keil <keil@isdn4linux.de>
+ * by Kai Germaschewski <kai.germaschewski@gmx.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to Jan den Ouden
+ * Fritz Elfert
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include "hisax.h"
+
+#define FSM_TIMER_DEBUG 0
+
+int
+FsmNew(struct Fsm *fsm, struct FsmNode *fnlist, int fncount)
+{
+ int i;
+
+ fsm->jumpmatrix =
+ kzalloc(array3_size(sizeof(FSMFNPTR), fsm->state_count,
+ fsm->event_count),
+ GFP_KERNEL);
+ if (!fsm->jumpmatrix)
+ return -ENOMEM;
+
+ for (i = 0; i < fncount; i++)
+ if ((fnlist[i].state >= fsm->state_count) || (fnlist[i].event >= fsm->event_count)) {
+ printk(KERN_ERR "FsmNew Error line %d st(%ld/%ld) ev(%ld/%ld)\n",
+ i, (long)fnlist[i].state, (long)fsm->state_count,
+ (long)fnlist[i].event, (long)fsm->event_count);
+ } else
+ fsm->jumpmatrix[fsm->state_count * fnlist[i].event +
+ fnlist[i].state] = (FSMFNPTR)fnlist[i].routine;
+ return 0;
+}
+
+void
+FsmFree(struct Fsm *fsm)
+{
+ kfree((void *) fsm->jumpmatrix);
+}
+
+int
+FsmEvent(struct FsmInst *fi, int event, void *arg)
+{
+ FSMFNPTR r;
+
+ if ((fi->state >= fi->fsm->state_count) || (event >= fi->fsm->event_count)) {
+ printk(KERN_ERR "FsmEvent Error st(%ld/%ld) ev(%d/%ld)\n",
+ (long)fi->state, (long)fi->fsm->state_count, event, (long)fi->fsm->event_count);
+ return (1);
+ }
+ r = fi->fsm->jumpmatrix[fi->fsm->state_count * event + fi->state];
+ if (r) {
+ if (fi->debug)
+ fi->printdebug(fi, "State %s Event %s",
+ fi->fsm->strState[fi->state],
+ fi->fsm->strEvent[event]);
+ r(fi, event, arg);
+ return (0);
+ } else {
+ if (fi->debug)
+ fi->printdebug(fi, "State %s Event %s no routine",
+ fi->fsm->strState[fi->state],
+ fi->fsm->strEvent[event]);
+ return (!0);
+ }
+}
+
+void
+FsmChangeState(struct FsmInst *fi, int newstate)
+{
+ fi->state = newstate;
+ if (fi->debug)
+ fi->printdebug(fi, "ChangeState %s",
+ fi->fsm->strState[newstate]);
+}
+
+static void
+FsmExpireTimer(struct timer_list *t)
+{
+ struct FsmTimer *ft = from_timer(ft, t, tl);
+#if FSM_TIMER_DEBUG
+ if (ft->fi->debug)
+ ft->fi->printdebug(ft->fi, "FsmExpireTimer %lx", (long) ft);
+#endif
+ FsmEvent(ft->fi, ft->event, ft->arg);
+}
+
+void
+FsmInitTimer(struct FsmInst *fi, struct FsmTimer *ft)
+{
+ ft->fi = fi;
+#if FSM_TIMER_DEBUG
+ if (ft->fi->debug)
+ ft->fi->printdebug(ft->fi, "FsmInitTimer %lx", (long) ft);
+#endif
+ timer_setup(&ft->tl, FsmExpireTimer, 0);
+}
+
+void
+FsmDelTimer(struct FsmTimer *ft, int where)
+{
+#if FSM_TIMER_DEBUG
+ if (ft->fi->debug)
+ ft->fi->printdebug(ft->fi, "FsmDelTimer %lx %d", (long) ft, where);
+#endif
+ del_timer(&ft->tl);
+}
+
+int
+FsmAddTimer(struct FsmTimer *ft,
+ int millisec, int event, void *arg, int where)
+{
+
+#if FSM_TIMER_DEBUG
+ if (ft->fi->debug)
+ ft->fi->printdebug(ft->fi, "FsmAddTimer %lx %d %d",
+ (long) ft, millisec, where);
+#endif
+
+ if (timer_pending(&ft->tl)) {
+ printk(KERN_WARNING "FsmAddTimer: timer already active!\n");
+ ft->fi->printdebug(ft->fi, "FsmAddTimer already active!");
+ return -1;
+ }
+ ft->event = event;
+ ft->arg = arg;
+ ft->tl.expires = jiffies + (millisec * HZ) / 1000;
+ add_timer(&ft->tl);
+ return 0;
+}
+
+void
+FsmRestartTimer(struct FsmTimer *ft,
+ int millisec, int event, void *arg, int where)
+{
+
+#if FSM_TIMER_DEBUG
+ if (ft->fi->debug)
+ ft->fi->printdebug(ft->fi, "FsmRestartTimer %lx %d %d",
+ (long) ft, millisec, where);
+#endif
+
+ if (timer_pending(&ft->tl))
+ del_timer(&ft->tl);
+ ft->event = event;
+ ft->arg = arg;
+ ft->tl.expires = jiffies + (millisec * HZ) / 1000;
+ add_timer(&ft->tl);
+}