1 files changed, 15 insertions, 16 deletions

diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 64d0c85d5161..1f1a55e07733 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -164,26 +164,25 @@ hv_get_ringbuffer_availbytes(const struct hv_ring_buffer_info *rbi,
 }
 
 /* Get various debug metrics for the specified ring buffer. */
-void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
-                                 struct hv_ring_buffer_debug_info *debug_info)
+int hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
+                                struct hv_ring_buffer_debug_info *debug_info)
 {
         u32 bytes_avail_towrite;
         u32 bytes_avail_toread;
 
-        if (ring_info->ring_buffer) {
-                hv_get_ringbuffer_availbytes(ring_info,
-                                        &bytes_avail_toread,
-                                        &bytes_avail_towrite);
-
-                debug_info->bytes_avail_toread = bytes_avail_toread;
-                debug_info->bytes_avail_towrite = bytes_avail_towrite;
-                debug_info->current_read_index =
-                        ring_info->ring_buffer->read_index;
-                debug_info->current_write_index =
-                        ring_info->ring_buffer->write_index;
-                debug_info->current_interrupt_mask =
-                        ring_info->ring_buffer->interrupt_mask;
-        }
+        if (!ring_info->ring_buffer)
+                return -EINVAL;
+
+        hv_get_ringbuffer_availbytes(ring_info,
+                                     &bytes_avail_toread,
+                                     &bytes_avail_towrite);
+        debug_info->bytes_avail_toread = bytes_avail_toread;
+        debug_info->bytes_avail_towrite = bytes_avail_towrite;
+        debug_info->current_read_index = ring_info->ring_buffer->read_index;
+        debug_info->current_write_index = ring_info->ring_buffer->write_index;
+        debug_info->current_interrupt_mask
+                = ring_info->ring_buffer->interrupt_mask;
+        return 0;
 }
 EXPORT_SYMBOL_GPL(hv_ringbuffer_get_debuginfo);