linux-kernel - [PATCH 7/9] usb: gadget: net2272: use generic map/umap routines

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Message-Id: <1324290632-23758-8-git-send-email-balbi@ti.com>
Date:	Mon, 19 Dec 2011 12:30:29 +0200
From:	Felipe Balbi <balbi@...com>
To:	Linux USB Mailing List <linux-usb@...r.kernel.org>
Cc:	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...e.de> (supporter:USB SUBSYSTEM 
	,commit_signer:28/50=56%),
	Thomas Dahlmann <dahlmann.thomas@...or.de> (supporter:AMD GEODE
	CS5536...),
	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com> (commit_signer:43/50=86%),
	linux-omap@...r.kernel.org (open list:DESIGNWARE USB3 D...),
	linux-kernel@...r.kernel.org (open list),
	linux-geode@...ts.infradead.org (open list:AMD GEODE CS5536...)
Subject: [PATCH 7/9] 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@...com>
---
 drivers/usb/gadget/net2272.c |   18 ++++++++----------
 1 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
index 4c81d54..db99d74 100644
--- 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)
+		usb_gadget_map_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->req,
+				ep->is_in);
+		if (status)
+			return status;
 	}
 
 	dev_vdbg(dev->dev, "%s queue req %p, len %d buf %p dma %08llx %s\n",
-- 
1.7.8.rc3

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