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Date:   Thu, 17 Nov 2016 10:10:04 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     kbuild test robot <lkp@...el.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>, kbuild-all@...org,
        netdev@...r.kernel.org, davem@...emloft.net, mw@...ihalf.com,
        gregory.clement@...e-electrons.com, Shaohui.Xie@...escale.com
Subject: Re: [PATCH net-next v2 3/3] net: marvell: Allow drivers to be built with COMPILE_TEST

On Thursday, November 17, 2016 10:30:10 AM CET kbuild test robot wrote:
> 
> url:    https://github.com/0day-ci/linux/commits/Florian-Fainelli/net-fsl-Allow-most-drivers-to-be-built-with-COMPILE_TEST/20161116-094841
> config: m32r-allmodconfig (attached as .config)
> compiler: m32r-linux-gcc (GCC) 6.2.0
> reproduce:
>         wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=m32r 
> 
> All errors (new ones prefixed by >>):
> 
>    ERROR: "bad_dma_ops" [sound/core/snd-pcm.ko] undefined!
>    ERROR: "dma_common_mmap" [sound/core/snd-pcm.ko] undefined!
> >> ERROR: "bad_dma_ops" [drivers/net/ethernet/marvell/mvpp2.ko] undefined!
>    ERROR: "mvebu_mbus_get_dram_win_info" [drivers/net/ethernet/marvell/mvneta_bm.ko] undefined!
> >> ERROR: "bad_dma_ops" [drivers/net/ethernet/marvell/mvneta_bm.ko] undefined!
> >> ERROR: "bad_dma_ops" [drivers/net/ethernet/marvell/mvneta.ko] undefined!
> >> ERROR: "bad_dma_ops" [drivers/net/ethernet/marvell/mv643xx_eth.ko] undefined!
>    ERROR: "bad_dma_ops" [drivers/net/ethernet/freescale/gianfar_driver.ko] undefined!
> 
> 

This can be avoided by adding 'depends on HAS_DMA'. We should probably just
fix m32r instead to not require that and allow building all drivers even when
they can't work in the end.

	Arnd

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