linux-kernel - Re: [PATCH] media: stm32-dcmi: add power saving support

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Date:   Mon, 11 Jun 2018 20:36:19 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Hugues Fruchet <hugues.fruchet@...com>
Cc:     kbuild-all@...org, Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>, linux-media@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Yannick Fertre <yannick.fertre@...com>,
        Hugues Fruchet <hugues.fruchet@...com>
Subject: Re: [PATCH] media: stm32-dcmi: add power saving support

Hi Hugues,

I love your patch! Yet something to improve:

[auto build test ERROR on linuxtv-media/master]
[also build test ERROR on v4.17 next-20180608]
[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/Hugues-Fruchet/media-stm32-dcmi-add-power-saving-support/20180611-174016
base:   git://linuxtv.org/media_tree.git master
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/media/platform/stm32/stm32-dcmi.c: In function 'dcmi_suspend':
>> drivers/media/platform/stm32/stm32-dcmi.c:1886:2: error: implicit declaration of function 'pinctrl_pm_select_sleep_state' [-Werror=implicit-function-declaration]
     pinctrl_pm_select_sleep_state(dev);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/media/platform/stm32/stm32-dcmi.c: In function 'dcmi_resume':
>> drivers/media/platform/stm32/stm32-dcmi.c:1894:2: error: implicit declaration of function 'pinctrl_pm_select_default_state' [-Werror=implicit-function-declaration]
     pinctrl_pm_select_default_state(dev);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/pinctrl_pm_select_sleep_state +1886 drivers/media/platform/stm32/stm32-dcmi.c

  1879	
  1880	static __maybe_unused int dcmi_suspend(struct device *dev)
  1881	{
  1882		/* disable clock */
  1883		pm_runtime_force_suspend(dev);
  1884	
  1885		/* change pinctrl state */
> 1886		pinctrl_pm_select_sleep_state(dev);
  1887	
  1888		return 0;
  1889	}
  1890	
  1891	static __maybe_unused int dcmi_resume(struct device *dev)
  1892	{
  1893		/* restore pinctl default state */
> 1894		pinctrl_pm_select_default_state(dev);
  1895	
  1896		/* clock enable */
  1897		pm_runtime_force_resume(dev);
  1898	
  1899		return 0;
  1900	}
  1901	

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