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

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Date:   Fri, 4 Aug 2017 03:40:42 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Johan Hovold <johan@...nel.org>
Cc:     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,
        linux-rpi-kernel@...ts.infradead.org,
        Johan Hovold <johan@...nel.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

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}

vim +350 drivers/base/dma-mapping.c

   342	
   343	int dma_configure(struct device *dev)
   344	{
   345		struct device *bridge = NULL, *dma_dev = dev;
   346		enum dev_dma_attr attr;
   347		int ret = 0;
   348	
   349		/* USB devices share the controller's mask. */
 > 350		if (dev->bus == &usb_bus_type)
   351			return 0;
   352	
   353		if (dev_is_pci(dev)) {
   354			bridge = pci_get_host_bridge_device(to_pci_dev(dev));
   355			dma_dev = bridge;
   356			if (IS_ENABLED(CONFIG_OF) && dma_dev->parent &&
   357			    dma_dev->parent->of_node)
   358				dma_dev = dma_dev->parent;
   359		}
   360	
   361		if (dma_dev->of_node) {
   362			ret = of_dma_configure(dev, dma_dev->of_node);
   363		} else if (has_acpi_companion(dma_dev)) {
   364			attr = acpi_get_dma_attr(to_acpi_device_node(dma_dev->fwnode));
   365			if (attr != DEV_DMA_NOT_SUPPORTED)
   366				ret = acpi_dma_configure(dev, attr);
   367		}
   368	
   369		if (bridge)
   370			pci_put_host_bridge_device(bridge);
   371	
   372		return ret;
   373	}
   374	

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0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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