Re: [PATCH] iio: adc: at91-sama5d2_adc: add support for suspend/resume functionality

[kbuild test robot <lkp@intel.com>]

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Hi Eugen,

[auto build test ERROR on iio/togreg]
[also build test ERROR on v4.12-rc6 next-20170622]
[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/Eugen-Hristev/iio-adc-at91-sama5d2_adc-add-support-for-suspend-resume-functionality/20170623-043330
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: sparc64-allyesconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/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=sparc64 

All errors (new ones prefixed by >>):

   drivers/iio/adc/at91-sama5d2_adc.c: In function 'at91_adc_suspend':
>> drivers/iio/adc/at91-sama5d2_adc.c:559:9: error: implicit declaration of function 'pinctrl_pm_select_sleep_state' [-Werror=implicit-function-declaration]
     return pinctrl_pm_select_sleep_state(dev);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/iio/adc/at91-sama5d2_adc.c: In function 'at91_adc_resume':
>> drivers/iio/adc/at91-sama5d2_adc.c:569:8: error: implicit declaration of function 'pinctrl_pm_select_default_state' [-Werror=implicit-function-declaration]
     ret = pinctrl_pm_select_default_state(dev);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/iio/adc/at91-sama5d2_adc.c:589:3: error: implicit declaration of function 'at91_adc_configure_trigger' [-Werror=implicit-function-declaration]
      at91_adc_configure_trigger(st->trig, true);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/iio/adc/at91-sama5d2_adc.c:589:32: error: 'struct at91_adc_state' has no member named 'trig'; did you mean 'reg'?
      at91_adc_configure_trigger(st->trig, true);
                                   ^~
   cc1: some warnings being treated as errors

vim +/pinctrl_pm_select_sleep_state +559 drivers/iio/adc/at91-sama5d2_adc.c

   553		at91_adc_writel(st, AT91_SAMA5D2_CR, AT91_SAMA5D2_CR_SWRST);
   554	
   555		clk_disable_unprepare(st->per_clk);
   556		regulator_disable(st->vref);
   557		regulator_disable(st->reg);
   558	
 > 559		return pinctrl_pm_select_sleep_state(dev);
   560	}
   561	
   562	static int at91_adc_resume(struct device *dev)
   563	{
   564		struct iio_dev *indio_dev =
   565				platform_get_drvdata(to_platform_device(dev));
   566		struct at91_adc_state *st = iio_priv(indio_dev);
   567		int ret;
   568	
 > 569		ret = pinctrl_pm_select_default_state(dev);
   570		if (ret)
   571			goto resume_failed;
   572	
   573		ret = regulator_enable(st->reg);
   574		if (ret)
   575			goto resume_failed;
   576	
   577		ret = regulator_enable(st->vref);
   578		if (ret)
   579			goto reg_disable_resume;
   580	
   581		ret = clk_prepare_enable(st->per_clk);
   582		if (ret)
   583			goto vref_disable_resume;
   584	
   585		at91_adc_hw_init(st);
   586	
   587		/* reconfiguring trigger hardware state */
   588		if (iio_buffer_enabled(indio_dev))
 > 589			at91_adc_configure_trigger(st->trig, true);
   590	
   591		return 0;
   592	

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