linux-kernel - sound/soc/intel/boards/sof_ssp_amp.c:97:6: warning: variable 'i' set but not used

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Date:   Fri, 16 Sep 2022 18:44:33 +0800
From:   kernel test robot <lkp@...el.com>
To:     Brent Lu <brent.lu@...el.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Subject: sound/soc/intel/boards/sof_ssp_amp.c:97:6: warning: variable 'i' set
 but not used

Hi Brent,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3245cb65fd91cd514801bf91f5a3066d562f0ac4
commit: 2fe14ff61bd6d4fabe313435dd378b5a38eb6102 ASoC: Intel: sof_ssp_amp: rename driver and support cs35l41 amplifier
date:   7 months ago
config: arm64-randconfig-r023-20220916 (https://download.01.org/0day-ci/archive/20220916/202209161811.hAq3MGyI-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2fe14ff61bd6d4fabe313435dd378b5a38eb6102
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 2fe14ff61bd6d4fabe313435dd378b5a38eb6102
        # 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=arm64 SHELL=/bin/bash sound/soc/intel/boards/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> sound/soc/intel/boards/sof_ssp_amp.c:97:6: warning: variable 'i' set but not used [-Wunused-but-set-variable]
           int i = 0;
               ^
   1 warning generated.


vim +/i +97 sound/soc/intel/boards/sof_ssp_amp.c

    89	
    90	static int sof_card_late_probe(struct snd_soc_card *card)
    91	{
    92		struct sof_card_private *ctx = snd_soc_card_get_drvdata(card);
    93		struct snd_soc_component *component = NULL;
    94		char jack_name[NAME_SIZE];
    95		struct sof_hdmi_pcm *pcm;
    96		int err;
  > 97		int i = 0;
    98	
    99		if (!(sof_ssp_amp_quirk & SOF_HDMI_PLAYBACK_PRESENT))
   100			return 0;
   101	
   102		/* HDMI is not supported by SOF on Baytrail/CherryTrail */
   103		if (!ctx->idisp_codec)
   104			return 0;
   105	
   106		if (list_empty(&ctx->hdmi_pcm_list))
   107			return -EINVAL;
   108	
   109		if (ctx->common_hdmi_codec_drv) {
   110			pcm = list_first_entry(&ctx->hdmi_pcm_list, struct sof_hdmi_pcm,
   111					       head);
   112			component = pcm->codec_dai->component;
   113			return hda_dsp_hdmi_build_controls(card, component);
   114		}
   115	
   116		list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
   117			component = pcm->codec_dai->component;
   118			snprintf(jack_name, sizeof(jack_name),
   119				 "HDMI/DP, pcm=%d Jack", pcm->device);
   120			err = snd_soc_card_jack_new(card, jack_name,
   121						    SND_JACK_AVOUT, &pcm->sof_hdmi,
   122						    NULL, 0);
   123	
   124			if (err)
   125				return err;
   126	
   127			err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device,
   128						  &pcm->sof_hdmi);
   129			if (err < 0)
   130				return err;
   131	
   132			i++;
   133		}
   134	
   135		return hdac_hdmi_jack_port_init(component, &card->dapm);
   136	}
   137	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp