diff options
| -rw-r--r-- | drivers/hv/channel.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index dc5c35210c16..20fc8d50a039 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -1245,7 +1245,9 @@ u64 vmbus_next_request_id(struct vmbus_channel *channel, u64 rqst_addr) /* * Cannot return an ID of 0, which is reserved for an unsolicited - * message from Hyper-V. + * message from Hyper-V; Hyper-V does not acknowledge (respond to) + * VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED requests with ID of + * 0 sent by the guest. */ return current_id + 1; } @@ -1270,7 +1272,7 @@ u64 vmbus_request_addr(struct vmbus_channel *channel, u64 trans_id) /* Hyper-V can send an unsolicited message with ID of 0 */ if (!trans_id) - return trans_id; + return VMBUS_RQST_ERROR; spin_lock_irqsave(&rqstor->req_lock, flags); |