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-rw-r--r--drivers/hv/ring_buffer.c5
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);