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

[kbuild test robot]

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
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