Re: [PATCH] staging: greybus: don't use index pointer after iter

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Hi Karthik,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on v5.19-rc5]
[also build test WARNING on linus/master]
[cannot apply to staging/staging-testing next-20220707]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Karthik-Alapati/staging-greybus-don-t-use-index-pointer-after-iter/20220707-183311
base:    88084a3df1672e131ddc1b4e39eeacfd39864acf
config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220708/202207080123.R3ePp3SE-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/bc295082ef055003c6018b57d3c56c5aefcb65c5
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Karthik-Alapati/staging-greybus-don-t-use-index-pointer-after-iter/20220707-183311
        git checkout bc295082ef055003c6018b57d3c56c5aefcb65c5
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/staging/greybus/

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

All warnings (new ones prefixed by >>):

   drivers/staging/greybus/audio_helper.c: In function 'gbaudio_dapm_free_controls':
   drivers/staging/greybus/audio_helper.c:128:32: error: expected ';' before 'for'
     128 |                 w_found = false
         |                                ^
         |                                ;
>> drivers/staging/greybus/audio_helper.c:119:14: warning: variable 'w_found' set but not used [-Wunused-but-set-variable]
     119 |         bool w_found = false;
         |              ^~~~~~~
>> drivers/staging/greybus/audio_helper.c:118:41: warning: unused variable 'next_w' [-Wunused-variable]
     118 |         struct snd_soc_dapm_widget *w, *next_w;
         |                                         ^~~~~~


vim +/w_found +119 drivers/staging/greybus/audio_helper.c

   112	
   113	int gbaudio_dapm_free_controls(struct snd_soc_dapm_context *dapm,
   114				       const struct snd_soc_dapm_widget *widget,
   115				       int num)
   116	{
   117		int i;
 > 118		struct snd_soc_dapm_widget *w, *next_w;
 > 119		bool w_found = false;
   120	#ifdef CONFIG_DEBUG_FS
   121		struct dentry *parent = dapm->debugfs_dapm;
   122		struct dentry *debugfs_w = NULL;
   123	#endif
   124	
   125		mutex_lock(&dapm->card->dapm_mutex);
   126		for (i = 0; i < num; i++) {
   127			/* below logic can be optimized to identify widget pointer */
   128			w_found = false
   129			list_for_each_entry_safe(w, next_w, &dapm->card->widgets,
   130						 list) {
   131				if (w->dapm != dapm)
   132					continue;
   133				if (!strcmp(w->name, widget->name)) {
   134					w_found = true;
   135					break;
   136				}
   137				w = NULL;
   138			}
   139			if (!w_found) {
   140				dev_err(dapm->dev, "%s: widget not found\n",
   141					widget->name);
   142				widget++;
   143				continue;
   144			}
   145			widget++;
   146	#ifdef CONFIG_DEBUG_FS
   147			if (!parent)
   148				debugfs_w = debugfs_lookup(w->name, parent);
   149			debugfs_remove(debugfs_w);
   150			debugfs_w = NULL;
   151	#endif
   152			gbaudio_dapm_free_widget(w);
   153		}
   154		mutex_unlock(&dapm->card->dapm_mutex);
   155		return 0;
   156	}
   157	

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