Re: [PATCH] clk: mediatek: fix memory leak on module removal

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

Hi Akari,

kernel test robot noticed the following build errors:

[auto build test ERROR on clk/clk-next]
[also build test ERROR on linus/master v7.2-rc6 next-20260805]
[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/Akari-Tsuyukusa/clk-mediatek-fix-memory-leak-on-module-removal/20260805-032732
base:   https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next
patch link:    https://lore.kernel.org/r/20260629142348.273766-1-akkun11.open%40gmail.com
patch subject: [PATCH] clk: mediatek: fix memory leak on module removal
config: sparc-randconfig-001-20260806 (https://download.01.org/0day-ci/archive/20260806/202608062020.IFIwVdEc-lkp@intel.com/config)
compiler: sparc-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260806/202608062020.IFIwVdEc-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608062020.IFIwVdEc-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/clk/mediatek/clk-mt8173-infracfg.c: In function 'clk_mt8173_infracfg_probe':
>> drivers/clk/mediatek/clk-mt8173-infracfg.c:131:36: error: 'clk_data' undeclared (first use in this function); did you mean 'clk_gate'?
     131 |         platform_set_drvdata(pdev, clk_data);
         |                                    ^~~~~~~~
         |                                    clk_gate
   drivers/clk/mediatek/clk-mt8173-infracfg.c:131:36: note: each undeclared identifier is reported only once for each function it appears in


vim +131 drivers/clk/mediatek/clk-mt8173-infracfg.c

    78	
    79	static void clk_mt8173_infra_init_early(struct device_node *node)
    80	{
    81		int i;
    82	
    83		infra_clk_data = mtk_alloc_clk_data(CLK_INFRA_NR_CLK);
    84		if (!infra_clk_data)
    85			return;
    86	
    87		for (i = 0; i < CLK_INFRA_NR_CLK; i++)
    88			infra_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER);
    89	
    90		mtk_clk_register_factors(infra_early_divs,
    91					 ARRAY_SIZE(infra_early_divs), infra_clk_data);
    92	
    93		of_clk_add_hw_provider(node, of_clk_hw_onecell_get, infra_clk_data);
    94	}
    95	CLK_OF_DECLARE_DRIVER(mtk_infrasys, "mediatek,mt8173-infracfg",
    96			      clk_mt8173_infra_init_early);
    97	
    98	static int clk_mt8173_infracfg_probe(struct platform_device *pdev)
    99	{
   100		struct device_node *node = pdev->dev.of_node;
   101		int r, i;
   102	
   103		if (!infra_clk_data) {
   104			infra_clk_data = mtk_alloc_clk_data(CLK_INFRA_NR_CLK);
   105			if (!infra_clk_data)
   106				return -ENOMEM;
   107		} else {
   108			for (i = 0; i < CLK_INFRA_NR_CLK; i++)
   109				if (infra_clk_data->hws[i] == ERR_PTR(-EPROBE_DEFER))
   110					infra_clk_data->hws[i] = ERR_PTR(-ENOENT);
   111		}
   112	
   113		r = mtk_clk_register_gates(&pdev->dev, node, infra_gates,
   114					   ARRAY_SIZE(infra_gates), infra_clk_data);
   115		if (r)
   116			return r;
   117	
   118		r = mtk_clk_register_cpumuxes(&pdev->dev, node, cpu_muxes,
   119					      ARRAY_SIZE(cpu_muxes), infra_clk_data);
   120		if (r)
   121			goto unregister_gates;
   122	
   123		r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, infra_clk_data);
   124		if (r)
   125			goto unregister_cpumuxes;
   126	
   127		r = mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc);
   128		if (r)
   129			goto unregister_clk_hw;
   130	
 > 131		platform_set_drvdata(pdev, clk_data);
   132		return 0;
   133	
   134	unregister_clk_hw:
   135		of_clk_del_provider(node);
   136	unregister_cpumuxes:
   137		mtk_clk_unregister_cpumuxes(cpu_muxes, ARRAY_SIZE(cpu_muxes), infra_clk_data);
   138	unregister_gates:
   139		mtk_clk_unregister_gates(infra_gates, ARRAY_SIZE(infra_gates), infra_clk_data);
   140		return r;
   141	}
   142	

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