tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4d02da974ea85a62074efedf354e82778f910d82
commit: 88eaaecc44461f9fb147bf7ee6ccc6d4e9fc23e0 usb: host: Enable compile testing for some of drivers
date:   11 months ago
config: mips-randconfig-r016-20201120 (attached as .config)
compiler: mips-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=88eaaecc44461f9fb147bf7ee6ccc6d4e9fc23e0
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 88eaaecc44461f9fb147bf7ee6ccc6d4e9fc23e0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 

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

All errors (new ones prefixed by >>):

   mips-linux-ld: drivers/mfd/omap-usb-host.o: in function `usbhs_omap_probe':
>> omap-usb-host.c:(.text+0x940): undefined reference to `clk_set_parent'
>> mips-linux-ld: omap-usb-host.c:(.text+0x984): undefined reference to `clk_set_parent'
   mips-linux-ld: drivers/mmc/host/mtk-sd.o: in function `msdc_ops_set_ios':
   mtk-sd.c:(.text+0x2bbc): undefined reference to `clk_get_parent'
   mips-linux-ld: mtk-sd.c:(.text+0x2c14): undefined reference to `clk_get_parent'

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org