Fix shutdown issue

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@2682 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 7 insertions, 3 deletions

diff --git a/wct4xxp/base.c b/wct4xxp/base.c
index e43583b..263e8fe 100644
--- a/wct4xxp/base.c
+++ b/wct4xxp/base.c
@@ -36,6 +36,7 @@
 #include <linux/spinlock.h>
 #include <asm/io.h>
 #include <linux/version.h>
+#include <linux/delay.h>
 #ifdef STANDALONE_ZAPATA
 #include "zaptel.h"
 #else
@@ -1382,9 +1383,6 @@ static int t4_shutdown(struct zt_span *span)
 	wasrunning = span->flags & ZT_FLAG_RUNNING;
 
 	span->flags &= ~ZT_FLAG_RUNNING;
-	if (wasrunning)
-		wc->spansstarted--;
-
 	__t4_set_led(wc, span->offset, WC_OFF);
 	if (((wc->numspans == 4) && 
 	    (!(wc->tspans[0]->span.flags & ZT_FLAG_RUNNING)) &&
@@ -1400,6 +1398,12 @@ static int t4_shutdown(struct zt_span *span)
 		wc->stopdma = 1;
 	} else wc->checktiming = 1;
 	spin_unlock_irqrestore(&wc->reglock, flags);
+
+	/* Wait for interrupt routine to shut itself down */
+	msleep(10);
+	if (wasrunning)
+		wc->spansstarted--;
+
 	if (debug & DEBUG_MAIN)
 		printk("Span %d (%s) shutdown\n", span->spanno, span->name);
 	return 0;