tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git device_h_splitup
head:   8ac09706c581716b3ca938773ad29e50854fa674
commit: bfe8e3fa1f0d3946158a6526aefccc5160b51cb9 [34/35] device.h: move 'struct bus' stuff out to device/bus.h
config: sh-allyesconfig (attached as .config)
compiler: sh4-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout bfe8e3fa1f0d3946158a6526aefccc5160b51cb9
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=sh 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from include/linux/device.h:29:0,
                    from include/linux/dma-mapping.h:7,
                    from include/linux/skbuff.h:31,
                    from include/linux/if_ether.h:19,
                    from include/uapi/linux/ethtool.h:19,
                    from include/linux/ethtool.h:18,
                    from include/linux/netdevice.h:37,
                    from include/linux/if_vlan.h:10,
                    from drivers/net//ethernet/hisilicon/hns/hns_dsaf_mac.h:9,
                    from drivers/net//ethernet/hisilicon/hns/hns_dsaf_misc.c:6:
   include/linux/device/bus.h:193:62: warning: 'struct fwnode_handle' declared inside parameter list will not be visible outside of this definition or declaration
    bus_find_device_by_fwnode(struct bus_type *bus, const struct fwnode_handle *fwnode)
                                                                 ^~~~~~~~~~~~~
   drivers/net//ethernet/hisilicon/hns/hns_dsaf_misc.c: In function 'hns_dsaf_find_platform_device':
>> drivers/net//ethernet/hisilicon/hns/hns_dsaf_misc.c:762:54: error: passing argument 2 of 'bus_find_device_by_fwnode' from incompatible pointer type [-Werror=incompatible-pointer-types]
     dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode);
                                                         ^~~~~~
   In file included from include/linux/device.h:29:0,
                    from include/linux/dma-mapping.h:7,
                    from include/linux/skbuff.h:31,
                    from include/linux/if_ether.h:19,
                    from include/uapi/linux/ethtool.h:19,
                    from include/linux/ethtool.h:18,
                    from include/linux/netdevice.h:37,
                    from include/linux/if_vlan.h:10,
                    from drivers/net//ethernet/hisilicon/hns/hns_dsaf_mac.h:9,
                    from drivers/net//ethernet/hisilicon/hns/hns_dsaf_misc.c:6:
   include/linux/device/bus.h:193:1: note: expected 'const struct fwnode_handle *' but argument is of type 'struct fwnode_handle *'
    bus_find_device_by_fwnode(struct bus_type *bus, const struct fwnode_handle *fwnode)
    ^~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/bus_find_device_by_fwnode +762 drivers/net//ethernet/hisilicon/hns/hns_dsaf_misc.c

d605916b765934 Salil            2016-08-24  756  
d605916b765934 Salil            2016-08-24  757  struct
d605916b765934 Salil            2016-08-24  758  platform_device *hns_dsaf_find_platform_device(struct fwnode_handle *fwnode)
d605916b765934 Salil            2016-08-24  759  {
d605916b765934 Salil            2016-08-24  760  	struct device *dev;
d605916b765934 Salil            2016-08-24  761  
67843bbaf36eb0 Suzuki K Poulose 2019-07-23 @762  	dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode);

:::::: The code at line 762 was first introduced by commit
:::::: 67843bbaf36eb087714f40e783ee78e99e9e4b86 drivers: Introduce device lookup variants by fwnode

:::::: TO: Suzuki K Poulose <suzuki.poulose@arm.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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