1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index b2da4753b12e..1609623ec829 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1239,7 +1239,8 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
 
         /* Map the URB's buffers for DMA access.
          * Lower level HCD code should use *_dma exclusively,
-         * unless it uses pio or talks to another transport.
+         * unless it uses pio or talks to another transport,
+         * or uses the provided scatter gather list for bulk.
          */
         if (is_root_hub(urb->dev))
                 return 0;