Hi, [auto build test ERROR on v4.7-rc3] [also build test ERROR on next-20160609] [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/Andy-Shevchenko/serial-8250-split-LPSS-to-8250_lpss-enable-DMA-on-Quark/20160613-220941 config: x86_64-randconfig-s3-06140616 (attached as .config) compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/built-in.o: In function `qrk_serial_exit': >> 8250_lpss.c:(.text+0x180ea0): undefined reference to `dw_dma_remove' drivers/built-in.o: In function `qrk_serial_setup': >> 8250_lpss.c:(.text+0x180f0b): undefined reference to `dw_dma_probe' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation