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From: Sepherosa Ziehau <sephe@FreeBSD.org>
Date: Mon, 28 Nov 2016 04:53:37 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r309224 - head/sys/dev/hyperv/vmbus
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Author: sephe
Date: Mon Nov 28 04:53:36 2016
New Revision: 309224
URL: https://svnweb.freebsd.org/changeset/base/309224

Log:
  hyperv/vmbus: Zero out GPADL if error happens.
  
  MFC after:	1 week
  Sponsored by:	Microsoft
  Differential Revision:	https://reviews.freebsd.org/D8601

Modified:
  head/sys/dev/hyperv/vmbus/vmbus_chan.c

Modified: head/sys/dev/hyperv/vmbus/vmbus_chan.c
==============================================================================
--- head/sys/dev/hyperv/vmbus/vmbus_chan.c	Mon Nov 28 02:59:33 2016	(r309223)
+++ head/sys/dev/hyperv/vmbus/vmbus_chan.c	Mon Nov 28 04:53:36 2016	(r309224)
@@ -503,6 +503,12 @@ vmbus_chan_gpadl_connect(struct vmbus_ch
 	uint64_t page_id;
 
 	/*
+	 * Reset GPADL, so that the result would consistent, if error
+	 * happened later on.
+	 */
+	*gpadl0 = 0;
+
+	/*
 	 * Preliminary checks.
 	 */