usb: gadget: net2272: use generic map/umap 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/net2272.c b/drivers/usb/gadget/net2272.c
index 7322d29..01ae56f 100644 (file)
--- a/drivers/usb/gadget/net2272.c
+++ b/drivers/usb/gadget/net2272.c
@@ -385,12 +385,9 @@ net2272_done(struct net2272_ep *ep, struct net2272_request *req, int status)
                status = req->req.status;
 
        dev = ep->dev;
-       if (use_dma && req->mapped) {
-               dma_unmap_single(dev->dev, req->req.dma, req->req.length,
-                       ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-               req->req.dma = DMA_ADDR_INVALID;
-               req->mapped = 0;
-       }
+       if (use_dma && ep->dma)
+               usb_gadget_unmap_request(&dev->gadget, &req->req,
+                               ep->is_in);
 
        if (status && status != -ESHUTDOWN)
                dev_vdbg(dev->dev, "complete %s req %p stat %d len %u/%u buf %p\n",
@@ -850,10 +847,11 @@ net2272_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
                return -ESHUTDOWN;
 
        /* set up dma mapping in case the caller didn't */
-       if (use_dma && ep->dma && _req->dma == DMA_ADDR_INVALID) {
-               _req->dma = dma_map_single(dev->dev, _req->buf, _req->length,
-                       ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-               req->mapped = 1;
+       if (use_dma && ep->dma) {
+               status = usb_gadget_map_request(&dev->gadget, _req,
+                               ep->is_in);
+               if (status)
+                       return status;
        }
 
        dev_vdbg(dev->dev, "%s queue req %p, len %d buf %p dma %08llx %s\n",