usb: renesas_usbhs: fixup comment-out

This patch add/modify comment-out of renesas_usbhs.
On this process, usbhs_pkt_init was moved because it was placed under
usbhsf_null_handler which has no relationship it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 9a8e2e9141b2..cc3ad634d4f7 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -114,7 +114,7 @@ struct usbhsg_recip_handle {
 #define usbhsg_status_has(gp, b) (gp->status &   b)
 
 /*
- *              list push/pop
+ *              queue push/pop
  */
 static void usbhsg_queue_push(struct usbhsg_uep *uep,
                               struct usbhsg_request *ureq)
@@ -160,6 +160,9 @@ static void usbhsg_queue_done(struct usbhs_pkt *pkt)
         usbhsg_queue_pop(uep, ureq, 0);
 }
 
+/*
+ *              dma map/unmap
+ */
 static int usbhsg_dma_map(struct device *dev,
                           struct usbhs_pkt *pkt,
                           enum dma_data_direction dir)
@@ -473,6 +476,11 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
                 uep->pipe               = pipe;
                 pipe->mod_private       = uep;
 
+                /*
+                 * usbhs_fifo_dma_push/pop_handler try to
+                 * use dmaengine if possible.
+                 * It will use pio handler if impossible.
+                 */
                 if (usb_endpoint_dir_in(desc))
                         uep->handler = &usbhs_fifo_dma_push_handler;
                 else