Re: [PATCH v3 2/2] ALSA: hda - identify when audio is provided by a video driver

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

Hi Mauro,

I love your patch! Yet something to improve:

[auto build test ERROR on mcgrof/modules-next]
[also build test ERROR on linus/master v5.18-rc4 next-20220429]
[cannot apply to tiwai-sound/for-next]
[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/Mauro-Carvalho-Chehab/Let-userspace-know-when-snd-hda-intel-needs-i915/20220430-214332
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git modules-next
config: riscv-buildonly-randconfig-r003-20220428 (https://download.01.org/0day-ci/archive/20220501/202205010257.ZFhZYEG9-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 400775649969b9baf3bc2a510266e7912bb16ae9)
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
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/32f6557b5cc77c3cc2fcf6e68f11d989e31c954d
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Mauro-Carvalho-Chehab/Let-userspace-know-when-snd-hda-intel-needs-i915/20220430-214332
        git checkout 32f6557b5cc77c3cc2fcf6e68f11d989e31c954d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash sound/hda/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> sound/hda/hdac_component.c:202:7: error: call to undeclared function '__try_module_get'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           if (!__try_module_get(acomp->ops->owner, dev->driver->owner)) {
                ^
   sound/hda/hdac_component.c:202:7: note: did you mean 'try_module_get'?
   include/linux/module.h:759:20: note: 'try_module_get' declared here
   static inline bool try_module_get(struct module *module)
                      ^
   1 error generated.


vim +/__try_module_get +202 sound/hda/hdac_component.c

   183	
   184	static int hdac_component_master_bind(struct device *dev)
   185	{
   186		struct drm_audio_component *acomp = hdac_get_acomp(dev);
   187		int ret;
   188	
   189		if (WARN_ON(!acomp))
   190			return -EINVAL;
   191	
   192		ret = component_bind_all(dev, acomp);
   193		if (ret < 0)
   194			return ret;
   195	
   196		if (WARN_ON(!(acomp->dev && acomp->ops))) {
   197			ret = -EINVAL;
   198			goto out_unbind;
   199		}
   200	
   201		/* pin the module to avoid dynamic unbinding, but only if given */
 > 202		if (!__try_module_get(acomp->ops->owner, dev->driver->owner)) {
   203			ret = -ENODEV;
   204			goto out_unbind;
   205		}
   206	
   207		if (acomp->audio_ops && acomp->audio_ops->master_bind) {
   208			ret = acomp->audio_ops->master_bind(dev, acomp);
   209			if (ret < 0)
   210				goto module_put;
   211		}
   212	
   213		complete_all(&acomp->master_bind_complete);
   214		return 0;
   215	
   216	 module_put:
   217		module_put(acomp->ops->owner);
   218	out_unbind:
   219		component_unbind_all(dev, acomp);
   220		complete_all(&acomp->master_bind_complete);
   221	
   222		return ret;
   223	}
   224	

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