RE: [PATCH v6 2/2] mmc: Add mmc driver for Sunplus SP7021

["Tony Huang 黃懷厚" <tony.huang@sunplus.com>]

Dear Arnd:

> 
> Hi Tony,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on ulf-hansson-mmc-mirror/next] [cannot apply to
> robh/for-next linus/master v5.18-rc1 next-20220406] [If your patch is applied
> to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:
> https://github.com/intel-lab-lkp/linux/commits/Tony-Huang/Add-mmc-driver-f
> or-Sunplus-SP7021-SOC/20220406-194106
> base:   https://git.linaro.org/people/ulf.hansson/mmc-mirror.git next
> config: nds32-buildonly-randconfig-r003-20220406
> (https://download.01.org/0day-ci/archive/20220407/202204070029.JvyEor8F-l
> kp@intel.com/config)
> compiler: nds32le-linux-gcc (GCC) 11.2.0 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://github.com/intel-lab-lkp/linux/commit/325a0d9ca9d65f5616f794e0dbb
> 04256312f739d
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review
> Tony-Huang/Add-mmc-driver-for-Sunplus-SP7021-SOC/20220406-194106
>         git checkout 325a0d9ca9d65f5616f794e0dbb04256312f739d
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0
> make.cross O=build_dir ARCH=nds32 SHELL=/bin/bash drivers/mmc/host/
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All error/warnings (new ones prefixed by >>):
> 
>    drivers/mmc/host/sunplus-mmc.c: In function 'spmmc_set_bus_timing':
> >> drivers/mmc/host/sunplus-mmc.c:311:15: warning: variable
> >> 'timing_name' set but not used [-Wunused-but-set-variable]
>      311 |         char *timing_name;
>          |               ^~~~~~~~~~~
>    drivers/mmc/host/sunplus-mmc.c: At top level:
> >> drivers/mmc/host/sunplus-mmc.c:798:13: warning: no previous prototype
> >> for 'spmmc_irq' [-Wmissing-prototypes]
>      798 | irqreturn_t spmmc_irq(int irq, void *dev_id)
>          |             ^~~~~~~~~
> >> drivers/mmc/host/sunplus-mmc.c:894:5: warning: no previous prototype
> >> for 'spmmc_get_cd' [-Wmissing-prototypes]
>      894 | int spmmc_get_cd(struct mmc_host *mmc)
>          |     ^~~~~~~~~~~~
>    drivers/mmc/host/sunplus-mmc.c: In function 'spmmc_drv_probe':
> >> drivers/mmc/host/sunplus-mmc.c:1021:22: warning: variable 'mode' set
> >> but not used [-Wunused-but-set-variable]
>     1021 |         unsigned int mode;
>          |                      ^~~~
>    drivers/mmc/host/sunplus-mmc.c: At top level:
> >> drivers/mmc/host/sunplus-mmc.c:1170:9: error: implicit declaration of
> >> function 'SYSTEM_SLEEP_PM_OPS'; did you mean
> >> 'SET_SYSTEM_SLEEP_PM_OPS'? [-Werror=implicit-function-declaration]
>     1170 |         SYSTEM_SLEEP_PM_OPS(spmmc_pm_suspend,
> spmmc_pm_resume)
>          |         ^~~~~~~~~~~~~~~~~~~
>          |         SET_SYSTEM_SLEEP_PM_OPS

I follow your sugguest in v5. 						
"It's better to use SYSTEM_SLEEP_PM_OPS/RUNTIME_PM_OPS instead of the SET_ version"						
But kernel test robot shows error.