From e58ebcd14210d3def22ba44d9d14daffbe2eb8e0 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 28 Jan 2013 14:48:36 +0200 Subject: [PATCH] usb: gadget: s3c-hsotg: switch over to usb_gadget_map/unmap_request() we have generic implementations for a reason, let's use them. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 46 ++++------------------------------ 1 file changed, 5 insertions(+), 41 deletions(-) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 8ae0bd99ffde..2812fa51e296 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -39,8 +39,6 @@ #include "s3c-hsotg.h" -#define DMA_ADDR_INVALID (~((dma_addr_t)0)) - static const char * const s3c_hsotg_supply_names[] = { "vusb_d", /* digital USB supply, 1.2V */ "vusb_a", /* analog USB supply, 1.1V */ @@ -405,7 +403,6 @@ static struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep, INIT_LIST_HEAD(&req->queue); - req->req.dma = DMA_ADDR_INVALID; return &req->req; } @@ -435,24 +432,12 @@ static void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg, struct s3c_hsotg_req *hs_req) { struct usb_request *req = &hs_req->req; - enum dma_data_direction dir; - - dir = hs_ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE; /* ignore this if we're not moving any data */ if (hs_req->req.length == 0) return; - if (hs_req->mapped) { - /* we mapped this, so unmap and remove the dma */ - - dma_unmap_single(hsotg->dev, req->dma, req->length, dir); - - req->dma = DMA_ADDR_INVALID; - hs_req->mapped = 0; - } else { - dma_sync_single_for_cpu(hsotg->dev, req->dma, req->length, dir); - } + usb_gadget_unmap_request(&hsotg->gadget, hs_req, hs_ep->dir_in); } /** @@ -852,37 +837,16 @@ static int s3c_hsotg_map_dma(struct s3c_hsotg *hsotg, struct s3c_hsotg_ep *hs_ep, struct usb_request *req) { - enum dma_data_direction dir; struct s3c_hsotg_req *hs_req = our_req(req); - - dir = hs_ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE; + int ret; /* if the length is zero, ignore the DMA data */ if (hs_req->req.length == 0) return 0; - if (req->dma == DMA_ADDR_INVALID) { - dma_addr_t dma; - - dma = dma_map_single(hsotg->dev, req->buf, req->length, dir); - - if (unlikely(dma_mapping_error(hsotg->dev, dma))) - goto dma_error; - - if (dma & 3) { - dev_err(hsotg->dev, "%s: unaligned dma buffer\n", - __func__); - - dma_unmap_single(hsotg->dev, dma, req->length, dir); - return -EINVAL; - } - - hs_req->mapped = 1; - req->dma = dma; - } else { - dma_sync_single_for_cpu(hsotg->dev, req->dma, req->length, dir); - hs_req->mapped = 0; - } + ret = usb_gadget_map_request(&hsotg->gadget, req, hs_ep->dir_in); + if (ret) + goto dma_error; return 0; -- 2.30.2