1 files changed, 7 insertions, 0 deletions

diff --git a/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c b/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
index 26dc381c1767..7477acfafa4a 100644
--- a/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
+++ b/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
@@ -357,6 +357,7 @@ storvsc_handle_sc_creation(void *context)
 static void
 storvsc_send_multichannel_request(struct hv_device *dev, int max_chans)
 {
+	struct hv_vmbus_channel **subchan;
 	struct storvsc_softc *sc;
 	struct hv_storvsc_request *request;
 	struct vstor_packet *vstor_packet;	
@@ -413,6 +414,12 @@ storvsc_send_multichannel_request(struct hv_device *dev, int max_chans)
 		return;
 	}
 
+	/*
+	 * Wait for sub-channels setup to complete.
+	 */
+	subchan = vmbus_get_subchan(dev->channel, request_channels_cnt);
+	vmbus_rel_subchan(subchan, request_channels_cnt);
+
 	if (bootverbose)
 		printf("Storvsc create multi-channel success!\n");
 }