RE: [PATCH] usb: gadget: fsl_udc_core: remove mapped flag
From: Chen Peter-B29397 <hidden>
Date: 2012-09-05 02:17:16
=20
quoted hunk ↗ jump to hunk
@@ -195,14 +195,13 @@ static void done(struct fsl_ep *ep, struct fsl_req*req, int status) dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma); } =20 - if (req->mapped) { + if (req->req.dma !=3D DMA_ADDR_INVALID) { dma_unmap_single(ep->udc->gadget.dev.parent, req->req.dma, req->req.length, ep_is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); req->req.dma =3D DMA_ADDR_INVALID; - req->mapped =3D 0; } else dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
If the class driver has already mapped this address, the req->req.dma is no= t DMA_ADDR_INVALID either, in this case, the dma_sync_single_for_cpu is enoug= h. Peter