From: "K. Y. Srinivasan" <kys@microsoft.com>
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com,
jasowang@redhat.com
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Subject: [PATCH 1/1] Drivers: hv: vmbus: Do not attempt to negoatiate a new version prematurely
Date: Wed, 28 Aug 2013 14:56:54 -0700 [thread overview]
Message-ID: <1377727014-21583-1-git-send-email-kys@microsoft.com> (raw)
The current code would attempt to negotiate a different protocol version if
the current negotiation timed out. This triggers an assert in the host (on debug
builds). Avoid this by negotiating a newer version only if the host properly
rejects the current version being negotiated.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/connection.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index ec3b8cd..8f4743a 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -195,7 +195,10 @@ int vmbus_connect(void)
do {
ret = vmbus_negotiate_version(msginfo, version);
- if (ret == 0)
+ if (ret)
+ goto cleanup;
+
+ if (vmbus_connection.conn_state == CONNECTED)
break;
version = vmbus_get_next_version(version);
--
1.7.4.1
reply other threads:[~2013-08-28 21:16 UTC|newest]
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