From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754968Ab2AXLrf (ORCPT ); Tue, 24 Jan 2012 06:47:35 -0500 Received: from na3sys009aog108.obsmtp.com ([74.125.149.199]:53025 "EHLO na3sys009aog108.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754876Ab2AXLrc (ORCPT ); Tue, 24 Jan 2012 06:47:32 -0500 MIME-Version: 1.0 From: Felipe Balbi To: Linux USB Mailing List Cc: Felipe Balbi , Greg Kroah-Hartman (supporter:USB SUBSYSTEM ,commit_signer:28/51=55%), Thomas Dahlmann (supporter:AMD GEODE CS5536...), Kuninori Morimoto (commit_signer:43/51=84%), linux-omap@vger.kernel.org (open list:DESIGNWARE USB3 D...), linux-kernel@vger.kernel.org (open list), linux-geode@lists.infradead.org (open list:AMD GEODE CS5536...) Subject: [PATCH 3/9] usb: gadget: langwell: use generic map/unmap functions Date: Tue, 24 Jan 2012 13:45:24 +0200 Message-Id: <1327405543-27589-4-git-send-email-balbi@ti.com> X-Mailer: git-send-email 1.7.8.2 In-Reply-To: <1327405543-27589-1-git-send-email-balbi@ti.com> References: <1327405543-27589-1-git-send-email-balbi@ti.com> Organization: Texas Instruments\n Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org those routines have everything we need to map/unmap USB requests and it's better to use them. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/langwell_udc.c | 45 +++++------------------------------- 1 files changed, 7 insertions(+), 38 deletions(-) diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c index fa0fcc1..fe7fbe3 100644 --- a/drivers/usb/gadget/langwell_udc.c +++ b/drivers/usb/gadget/langwell_udc.c @@ -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, @@ -754,7 +745,8 @@ 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); @@ -781,33 +773,10 @@ 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", -- 1.7.8.2 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: [PATCH 3/9] usb: gadget: langwell: use generic map/unmap functions Date: Tue, 24 Jan 2012 13:45:24 +0200 Message-ID: <1327405543-27589-4-git-send-email-balbi@ti.com> References: <1327405543-27589-1-git-send-email-balbi@ti.com> Mime-Version: 1.0 Return-path: In-Reply-To: <1327405543-27589-1-git-send-email-balbi@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: Linux USB Mailing List Cc: Felipe Balbi , Greg Kroah-Hartman , Thomas Dahlmann , Kuninori Morimoto , "open list:DESIGNWARE USB3 D..." , open list , "open list:AMD GEODE CS5536..." List-Id: linux-omap@vger.kernel.org those routines have everything we need to map/unmap USB requests and it's better to use them. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/langwell_udc.c | 45 +++++------------------------------- 1 files changed, 7 insertions(+), 38 deletions(-) diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c index fa0fcc1..fe7fbe3 100644 --- a/drivers/usb/gadget/langwell_udc.c +++ b/drivers/usb/gadget/langwell_udc.c @@ -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, @@ -754,7 +745,8 @@ 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); @@ -781,33 +773,10 @@ 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", -- 1.7.8.2