linux-kernel - Re: [PATCH] dma-mapping: skip USB devices when configuring DMA during probe

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Date:   Fri, 4 Aug 2017 09:43:40 +0200
From:   Johan Hovold <johan@...nel.org>
To:     kbuild test robot <lkp@...el.com>
Cc:     Johan Hovold <johan@...nel.org>, kbuild-all@...org,
        Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andreas Färber <afaerber@...e.de>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable <stable@...r.kernel.org>,
        Robin Murphy <robin.murphy@....com>,
        Sricharan R <sricharan@...eaurora.org>,
        Stefan Wahren <stefan.wahren@...e.com>
Subject: Re: [PATCH] dma-mapping: skip USB devices when configuring DMA
 during probe

On Fri, Aug 04, 2017 at 03:40:42AM +0800, kbuild test robot wrote:
> Hi Johan,
> 
> [auto build test ERROR on driver-core/driver-core-testing]
> [also build test ERROR on v4.13-rc3 next-20170803]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Johan-Hovold/dma-mapping-skip-USB-devices-when-configuring-DMA-during-probe/20170804-014620
> config: microblaze-mmu_defconfig (attached as .config)
> compiler: microblaze-linux-gcc (GCC) 6.2.0
> reproduce:
>         wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=microblaze 
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/base/dma-mapping.o: In function `dma_configure':
> >> drivers/base/dma-mapping.c:350: undefined reference to `usb_bus_type'
>    drivers/base/dma-mapping.o: In function `dma_deconfigure':
>    drivers/base/dma-mapping.c:377: undefined reference to `usb_bus_type'
>    net/sunrpc/stats.o: In function `rpc_print_iostats':
>    net/sunrpc/stats.c:206: undefined reference to `_GLOBAL_OFFSET_TABLE_'
>    scripts/link-vmlinux.sh: line 93: 76193 Segmentation fault      ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} -T ${lds} ${objects}

Thanks for the report. Alan Stern pointed this out during review, so
this patch has already been superseded. 

Johan