Hi Wesley,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on robh/for-next]
[also build test ERROR on v4.17-rc3]
[cannot apply to next-20180503]
[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/Wesley-W-Terpstra/SiFive-SoC-PWM-driver/20180429-174212
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: arm-allyesconfig (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 >>):

   drivers/pwm/pwm-sifive.o: In function `sifive_pwm_apply':
>> pwm-sifive.c:(.text+0xe8): undefined reference to `__aeabi_uldivmod'
   drivers/pwm/pwm-sifive.o: In function `sifive_pwm_update_clock':
   pwm-sifive.c:(.text+0x1f0): undefined reference to `__aeabi_uldivmod'
   pwm-sifive.c:(.text+0x240): undefined reference to `__aeabi_uldivmod'

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