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usb: gadget: langwell: use generic map/unmap functions 

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>
This commit is contained in:
Felipe Balbi 2011-12-19 11:48:24 +02:00
parent 0fc9a1be09
commit ac8a138cb6
1 changed files with 7 additions and 38 deletions
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45
drivers/usb/gadget/langwell_udc.c
View File

@ -406,16 +406,7 @@ static void done(struct langwell_ep *ep, struct langwell_request *req,
dma_pool_free(dev->dtd_pool, curr_dtd, curr_dtd->dtd_dma);
}
if (req->mapped) {
dma_unmap_single(&dev->pdev->dev,
req->req.dma, req->req.length,
is_in(ep) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
req->req.dma = DMA_ADDR_INVALID;
req->mapped = 0;
} else
dma_sync_single_for_cpu(&dev->pdev->dev, req->req.dma,
req->req.length,
is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
usb_gadget_unmap_request(&dev->gadget, &req->req, is_in(ep));
if (status != -ESHUTDOWN)
dev_dbg(&dev->pdev->dev,
@ -755,7 +746,8 @@ static int langwell_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
struct langwell_ep *ep;
struct langwell_udc *dev;
unsigned long flags;
int is_iso = 0, zlflag = 0;
int is_iso = 0;
int ret;
/* always require a cpu-view buffer */
req = container_of(_req, struct langwell_request, req);
@ -782,33 +774,10 @@ static int langwell_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN))
return -ESHUTDOWN;
/* set up dma mapping in case the caller didn't */
if (_req->dma == DMA_ADDR_INVALID) {
/* WORKAROUND: WARN_ON(size == 0) */
if (_req->length == 0) {
dev_vdbg(&dev->pdev->dev, "req->length: 0->1\n");
zlflag = 1;
_req->length++;
}
_req->dma = dma_map_single(&dev->pdev->dev,
_req->buf, _req->length,
is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
if (zlflag && (_req->length == 1)) {
dev_vdbg(&dev->pdev->dev, "req->length: 1->0\n");
zlflag = 0;
_req->length = 0;
}
req->mapped = 1;
dev_vdbg(&dev->pdev->dev, "req->mapped = 1\n");
} else {
dma_sync_single_for_device(&dev->pdev->dev,
_req->dma, _req->length,
is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
req->mapped = 0;
dev_vdbg(&dev->pdev->dev, "req->mapped = 0\n");
}
/* set up dma mapping */
ret = usb_gadget_map_request(&dev->gadget, &req->req, is_in(ep));
if (ret)
return ret;
dev_dbg(&dev->pdev->dev,
"%s queue req %p, len %u, buf %p, dma 0x%08x\n",