From: Michael Grzeschik <m.grzeschik@pengutronix.de>
Date: Mon, 10 Oct 2011 16:38:06 +0000 (+0200)
Subject: USB: ci13xxx_udc: fix logic to mark request dma addresses as invalid
X-Git-Tag: v3.2-rc3~17^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=954aad8cd18c928e2db5229f6fa71c80d1c3d8b5;p=pandora-kernel.git

USB: ci13xxx_udc: fix logic to mark request dma addresses as invalid

The current driver sets the request's dma addr (mReq->req.dma) to 0 to
mark the DMA address as not valid. However some gadget drivers
(e.g. gadgetfs) set the request's dma addr to DMA_ADDR_INVALID to mark
the address as invalid. This leads to bogus data send because the
ci13xxx_udc driver assumes the request has already been mapped.

This patch fixes the problem, by using DMA_ADDR_INVALID instead of 0
to mark the request's DMA address as invalid.

Tested-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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