linux-kernel - Re: [PATCH 9/9] usb: gadget: goku: use generic map/unmap routines

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Date:	Mon, 19 Dec 2011 17:05:12 +0400
From:	Sergei Shtylyov <braindead@...eam.ru>
To:	Sergei Shtylyov <sshtylyov@...sta.com>
CC:	Felipe Balbi <balbi@...com>,
	Linux USB Mailing List <linux-usb@...r.kernel.org>,
	"Greg Kroah-Hartman (supporter:USB SUBSYSTEM ,commit_signer:28/50=56%)" 
	<gregkh@...e.de>,
	"Thomas Dahlmann (supporter:AMD GEODE CS5536...)" 
	<dahlmann.thomas@...or.de>,
	"Kuninori Morimoto (commit_signer:43/50=86%)" 
	<kuninori.morimoto.gx@...esas.com>,
	"open list:DESIGNWARE USB3 D..." <linux-omap@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:AMD GEODE CS5536..." <linux-geode@...ts.infradead.org>
Subject: Re: [PATCH 9/9] usb: gadget: goku: use generic map/unmap routines

Hello.

On 19-12-2011 17:02, Sergei Shtylyov wrote:

>> 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/goku_udc.c | 17 +++++++----------
>> 1 files changed, 7 insertions(+), 10 deletions(-)

>> diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
>> index 5af70fcc..bc47735 100644
>> --- a/drivers/usb/gadget/goku_udc.c
>> +++ b/drivers/usb/gadget/goku_udc.c
> [...]
>> @@ -736,10 +732,11 @@ goku_queue(struct usb_ep *_ep, struct usb_request
>> *_req, gfp_t gfp_flags)
>> return -EBUSY;

>> /* set up dma mapping in case the caller didn't */
>> - if (ep->dma&& _req->dma == DMA_ADDR_INVALID) {
>> - _req->dma = pci_map_single(dev->pdev, _req->buf, _req->length,
>> - ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
>> - req->mapped = 1;
>> + if (ep->dma) {
>> + status = usb_gadget_map_request(&dev->gadget, &req->req,

> Not '&_req->req'?

    Or just '_req'?

WBR, Sergei
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