linux-kernel - blackfin + dmaengine: conflicting define/enum "DMA

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Date:	Sat, 11 Jan 2014 19:09:30 +0100
From:	Marc Kleine-Budde <mkl@...gutronix.de>
To:	Mike Frysinger <vapier@...too.org>
CC:	uclinux-dist-devel@...ckfin.uclinux.org,
	LKML <linux-kernel@...r.kernel.org>, dmaengine@...r.kernel.org
Subject: blackfin + dmaengine: conflicting define/enum "DMA_COMPLETE"

Hello,

in current linux-next (and net-next) the compilation of the CAN
drivers[1] with ARCH=blackfin fails with:

>   CC [M]  drivers/net/can/c_can/c_can.o
> In file included from linux/include/linux/netdevice.h:38:0,
>                  from linux/drivers/net/can/c_can/c_can.c:32:
> linux/include/linux/dmaengine.h:55:2: error: expected identifier before numeric constant
> linux/include/linux/dmaengine.h: In function 'dma_async_is_complete':
> linux/include/linux/dmaengine.h:1023:9: error: 'DMA_IN_PROGRESS' undeclared (first use in this function)
> linux/include/linux/dmaengine.h:1023:9: note: each undeclared identifier is reported only once for each function it appears in

There are two locations where DMA_COMPLETE is defined:

> arch/blackfin/mach-bf548/include/mach/defBF547.h:602:#define              DMA_COMPLETE  0x8        /* DMA Complete */
> arch/blackfin/mach-bf548/include/mach/defBF544.h:622:#define              DMA_COMPLETE  0x8        /* DMA Complete */

and

> include/linux/dmaengine.h-enum dma_status {
> include/linux/dmaengine.h:      DMA_COMPLETE,
> include/linux/dmaengine.h-      DMA_IN_PROGRESS,
> include/linux/dmaengine.h-      DMA_PAUSED,
> include/linux/dmaengine.h-      DMA_ERROR,
> include/linux/dmaengine.h-};

What's the appropriate fix for the problem?

Marc

[1] Yes, c_can isn't a blackfin driver, but it's the first one in my
    compile tests and it fails.
-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |


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