Messages in this thread Patch in this message | | | From | "K. Y. Srinivasan" <> | Subject | [PATCH 3/5] Drivers: hv: vmbus: don't send CHANNELMSG_UNLOAD on pre-Win2012R2 hosts | Date | Fri, 3 Jul 2015 16:30:50 -0700 |
| |
From: Vitaly Kuznetsov <vkuznets@redhat.com>
Pre-Win2012R2 hosts don't properly handle CHANNELMSG_UNLOAD and wait_for_completion() hangs. Avoid sending such request on old hosts.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> --- drivers/hv/channel_mgmt.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 4506a66..00ba3f3 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -469,6 +469,10 @@ void vmbus_initiate_unload(void) { struct vmbus_channel_message_header hdr; + /* Pre-Win2012R2 hosts don't support reconnect */ + if (vmbus_proto_version < VERSION_WIN8_1) + return; + init_completion(&vmbus_connection.unload_event); memset(&hdr, 0, sizeof(struct vmbus_channel_message_header)); hdr.msgtype = CHANNELMSG_UNLOAD; -- 1.7.4.1
| |