linux-kernel - sound/soc//codecs/pcm1789.c:247:19: error: implicit declaration of function 'devm_gpiod_get

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Date:   Tue, 22 May 2018 08:57:41 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Mylène Josserand <mylene.josserand@...tlin.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: sound/soc//codecs/pcm1789.c:247:19: error: implicit declaration of
 function 'devm_gpiod_get_optional'

Hi Mylène,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c85061e6e0ee07e131b929e6a17bb2e20d19b321
commit: 4ae340d1be36378505498606e6c640dd0507ad61 ASoC: codecs: Add support for PCM1789
date:   9 weeks ago
config: x86_64-randconfig-s2-05220828 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        git checkout 4ae340d1be36378505498606e6c640dd0507ad61
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   sound/soc//codecs/pcm1789.c: In function 'pcm1789_common_init':
>> sound/soc//codecs/pcm1789.c:247:19: error: implicit declaration of function 'devm_gpiod_get_optional' [-Werror=implicit-function-declaration]
     pcm1789->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
                      ^~~~~~~~~~~~~~~~~~~~~~~
>> sound/soc//codecs/pcm1789.c:247:57: error: 'GPIOD_OUT_HIGH' undeclared (first use in this function)
     pcm1789->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
                                                            ^~~~~~~~~~~~~~
   sound/soc//codecs/pcm1789.c:247:57: note: each undeclared identifier is reported only once for each function it appears in
>> sound/soc//codecs/pcm1789.c:251:2: error: implicit declaration of function 'gpiod_set_value_cansleep' [-Werror=implicit-function-declaration]
     gpiod_set_value_cansleep(pcm1789->reset, 0);
     ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/devm_gpiod_get_optional +247 sound/soc//codecs/pcm1789.c

   233	
   234	int pcm1789_common_init(struct device *dev, struct regmap *regmap)
   235	{
   236		struct pcm1789_private *pcm1789;
   237	
   238		pcm1789 = devm_kzalloc(dev, sizeof(struct pcm1789_private),
   239				       GFP_KERNEL);
   240		if (!pcm1789)
   241			return -ENOMEM;
   242	
   243		pcm1789->regmap = regmap;
   244		pcm1789->dev = dev;
   245		dev_set_drvdata(dev, pcm1789);
   246	
 > 247		pcm1789->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
   248		if (IS_ERR(pcm1789->reset))
   249			return PTR_ERR(pcm1789->reset);
   250	
 > 251		gpiod_set_value_cansleep(pcm1789->reset, 0);
   252		msleep(300);
   253	
   254		INIT_WORK(&pcm1789->work, pcm1789_work_queue);
   255	
   256		return devm_snd_soc_register_component(dev, &soc_component_dev_pcm1789,
   257						       &pcm1789_dai, 1);
   258	}
   259	EXPORT_SYMBOL_GPL(pcm1789_common_init);
   260	

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