Rescind of subchannels were not being correctly handled. Fix the bug.
Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [3.11+]
---
drivers/hv/channel_mgmt.c | 8 ++------
1 files changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index bbff5f2..eebf566 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -203,7 +203,8 @@ static void vmbus_process_rescind_offer(struct work_struct *work)
struct vmbus_channel *primary_channel;
struct vmbus_channel_relid_released msg;
- vmbus_device_unregister(channel->device_obj);
+ if (channel->device_obj)
+ vmbus_device_unregister(channel->device_obj);
memset(&msg, 0, sizeof(struct vmbus_channel_relid_released));
msg.child_relid = channel->offermsg.child_relid;
msg.header.msgtype = CHANNELMSG_RELID_RELEASED;
@@ -213,11 +214,6 @@ static void vmbus_process_rescind_offer(struct work_struct *work)
spin_lock_irqsave(&vmbus_connection.channel_lock, flags);
list_del(&channel->listentry);
spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags);
- } else {
- primary_channel = channel->primary_channel;
- spin_lock_irqsave(&primary_channel->sc_lock, flags);
- list_del(&channel->listentry);
- spin_unlock_irqrestore(&primary_channel->sc_lock, flags);
}
free_channel(channel);
}
--
1.7.4.1
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