1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 15db66b74141..6361d124f67d 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -361,6 +361,11 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
         ring_info->ring_buffer->read_index =
                 ring_info->ring_buffer->write_index = 0;
 
+        /*
+         * Set the feature bit for enabling flow control.
+         */
+        ring_info->ring_buffer->feature_bits.value = 1;
+
         ring_info->ring_size = buflen;
         ring_info->ring_datasize = buflen - sizeof(struct hv_ring_buffer);