usb: gadget: r8a66597: use generic map/unmap routines

those routines have everything we need to map/unmap
USB requests and it's better to use them.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c
index f5b8d21..c4401e7 100644 (file)
--- a/drivers/usb/gadget/r8a66597-udc.c
+++ b/drivers/usb/gadget/r8a66597-udc.c
@@ -663,11 +663,7 @@ static int sudmac_alloc_channel(struct r8a66597 *r8a66597,
        ep->fifoctr = D0FIFOCTR;
 
        /* dma mapping */
-       req->req.dma = dma_map_single(r8a66597_to_dev(ep->r8a66597),
-                               req->req.buf, req->req.length,
-                               dma->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-
-       return 0;
+       return usb_gadget_map_request(&r8a66597->gadget, &req->req, dma->dir);
 }
 
 static void sudmac_free_channel(struct r8a66597 *r8a66597,
@@ -677,9 +673,7 @@ static void sudmac_free_channel(struct r8a66597 *r8a66597,
        if (!r8a66597_is_sudmac(r8a66597))
                return;
 
-       dma_unmap_single(r8a66597_to_dev(ep->r8a66597),
-                        req->req.dma, req->req.length,
-                        ep->dma->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+       usb_gadget_unmap_request(&r8a66597->gadget, &req->req, ep->dma->dir);
 
        r8a66597_bclr(r8a66597, DREQE, ep->fifosel);
        r8a66597_change_curpipe(r8a66597, 0, 0, ep->fifosel);