Hi Anson,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on shawnguo/for-next]
[also build test ERROR on v4.17-rc7 next-20180601]
[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/Anson-Huang/ARM-imx-add-L2-page-power-control-for-GPC/20180602-080503
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next
config: arm-arm67 (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/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=arm 

All errors (new ones prefixed by >>):

   arch/arm/mach-imx/mach-imx6sl.o: In function `imx6sl_init_late':

quoted

mach-imx6sl.c:(.init.text+0x2c): undefined reference to `imx6sx_cpuidle_init'

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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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