From e2cd32b13fe66f88eb7d9adc79d1c1f111b4ffa4 Mon Sep 17 00:00:00 2001
From: mogorman <mogorman@5390a7c7-147a-4af0-8ec9-7488f05a26cb>
Date: Tue, 19 Dec 2006 22:23:02 +0000
Subject: only clear pages that have been used, the real cause for problems.

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@1744 5390a7c7-147a-4af0-8ec9-7488f05a26cb
---
 zttranscode.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

(limited to 'zttranscode.c')

diff --git a/zttranscode.c b/zttranscode.c
index 896f380..862c503 100644
--- a/zttranscode.c
+++ b/zttranscode.c
@@ -207,14 +207,16 @@ static void ztc_release(struct zt_transcoder_channel *ztc)
 	if (!ztc)
 		return;
 
-	for (page = virt_to_page(zth);
-	     page < virt_to_page((unsigned long) zth + sizeof(*zth));
-	     page++)
-		ClearPageReserved(page);
-
 	ztc->flags &= ~(ZT_TC_FLAG_BUSY);
-	if (ztc->tch)
+
+	if (ztc->tch) {
+		for (page = virt_to_page(zth);
+		     page < virt_to_page((unsigned long) zth + sizeof(*zth));
+		     page++)
+			ClearPageReserved(page);
 		kfree(ztc->tch);
+	}
+
 	ztc->tch = NULL;
 	/* Actually reset the transcoder channel */
 	if (ztc->flags & ZT_TC_FLAG_TRANSIENT)
-- 
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