From 908b961326b2ecfbf494c9b2f206847d925f269d Mon Sep 17 00:00:00 2001
From: Alan Stern <stern@rowland.harvard.edu>
Date: Fri, 12 Jul 2013 11:06:21 -0400
Subject: [PATCH] usb: gadget: don't fail when DMA isn't present

When CONFIG_HAS_DMA isn't enabled, the UDC core gets build errors:

drivers/built-in.o: In function `dma_set_coherent_mask':
include/linux/dma-mapping.h:93: undefined reference to `dma_supported'
include/linux/dma-mapping.h:93: undefined reference to `dma_supported'
drivers/built-in.o: In function `usb_gadget_unmap_request':
drivers/usb/gadget/udc-core.c:91: undefined reference to `dma_unmap_sg'
drivers/usb/gadget/udc-core.c:96: undefined reference to `dma_unmap_single'
drivers/built-in.o: In function `usb_gadget_map_request':
drivers/usb/gadget/udc-core.c:62: undefined reference to `dma_map_sg'
drivers/usb/gadget/udc-core.c:71: undefined reference to `dma_map_single'
drivers/usb/gadget/udc-core.c:74: undefined reference to `dma_mapping_error'

Prevent this by protecting the DMA API routines with preprocessor tests.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---
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