From: Felipe Balbi <balbi@ti.com>
Date: Mon, 19 Dec 2011 09:32:34 +0000 (+0200)
Subject: usb: dwc3: gadget: use generic map/unmap routines
X-Git-Tag: v3.4-rc1~184^2~22^2~39^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0fc9a1be09d9f8b19bcf64ab96836cb92beb0970;p=pandora-kernel.git

usb: dwc3: gadget: use generic map/unmap routines

those routines have everything we need to map/unmap
USB requests and it's better to use them.

In order to achieve that, we had to add a simple
change on how we allocate and use our setup buffer;
we cannot allocate it from coherent anymore otherwise
the generic map/unmap routines won't be able to easily
know that the GetStatus request already has a DMA
address.

Signed-off-by: Felipe Balbi <balbi@ti.com>
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