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Message-ID: <202209201539.wghiUnB8-lkp@intel.com>
Date:   Tue, 20 Sep 2022 15:39:51 +0800
From:   kernel test robot <lkp@...el.com>
To:     Tomer Maimon <tmaimon77@...il.com>, mturquette@...libre.com,
        sboyd@...nel.org, avifishman70@...il.com, tali.perry1@...il.com,
        joel@....id.au, venture@...gle.com, yuenn@...gle.com,
        benjaminfair@...gle.com
Cc:     kbuild-all@...ts.01.org, openbmc@...ts.ozlabs.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tomer Maimon <tmaimon77@...il.com>
Subject: Re: [PATCH v10 1/1] clk: npcm8xx: add clock controller

Hi Tomer,

I love your patch! Perhaps something to improve:

[auto build test WARNING on clk/clk-next]
[also build test WARNING on linus/master v6.0-rc6 next-20220919]
[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/Tomer-Maimon/Introduce-Nuvoton-Arbel-NPCM8XX-BMC-SoC/20220920-020013
base:   https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next
config: s390-allyesconfig
compiler: s390-linux-gcc (GCC) 12.1.0
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
        # https://github.com/intel-lab-lkp/linux/commit/277a024d7abc4285dc553dea240bb5ac37cf8d33
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Tomer-Maimon/Introduce-Nuvoton-Arbel-NPCM8XX-BMC-SoC/20220920-020013
        git checkout 277a024d7abc4285dc553dea240bb5ac37cf8d33
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/clk/

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 >>):

   drivers/clk/clk-npcm8xx.c: In function 'npcm8xx_clk_probe':
>> drivers/clk/clk-npcm8xx.c:464:52: warning: passing argument 2 of 'npcm8xx_clk_register_pll' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     464 |                 hw = npcm8xx_clk_register_pll(dev, pll_clk, clk_base);
         |                                                    ^~~~~~~
   drivers/clk/clk-npcm8xx.c:80:70: note: expected 'struct npcm8xx_clk_pll *' but argument is of type 'const struct npcm8xx_clk_pll *'
      80 | npcm8xx_clk_register_pll(struct device *dev, struct npcm8xx_clk_pll *pll,
         |                                              ~~~~~~~~~~~~~~~~~~~~~~~~^~~


vim +464 drivers/clk/clk-npcm8xx.c

   426	
   427	static int npcm8xx_clk_probe(struct platform_device *pdev)
   428	{
   429		struct clk_hw_onecell_data *npcm8xx_clk_data;
   430		struct device *dev = &pdev->dev;
   431		void __iomem *clk_base;
   432		struct resource *res;
   433		struct clk_hw *hw;
   434		int i, err;
   435	
   436		npcm8xx_clk_data = devm_kzalloc(dev, struct_size(npcm8xx_clk_data, hws,
   437								 NPCM8XX_NUM_CLOCKS),
   438						GFP_KERNEL);
   439		if (!npcm8xx_clk_data)
   440			return -ENOMEM;
   441	
   442		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
   443		clk_base = devm_ioremap(dev, res->start, resource_size(res));
   444		if (!clk_base) {
   445			dev_err(&pdev->dev, "Failed to remap I/O memory\n");
   446			return -ENOMEM;
   447		}
   448	
   449		npcm8xx_clk_data->num = NPCM8XX_NUM_CLOCKS;
   450	
   451		for (i = 0; i < NPCM8XX_NUM_CLOCKS; i++)
   452			npcm8xx_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER);
   453	
   454		/* Reference 25MHz clock */
   455		hw = clk_hw_register_fixed_rate(dev, "refclk", NULL, 0, NPCM8XX_REF_CLK);
   456		if (IS_ERR(hw))
   457			return PTR_ERR(hw);
   458		npcm8xx_clk_data->hws[NPCM8XX_CLK_REFCLK] = hw;
   459	
   460		/* Register plls */
   461		for (i = 0; i < ARRAY_SIZE(npcm8xx_pll_clks); i++) {
   462			const struct npcm8xx_clk_pll *pll_clk = &npcm8xx_pll_clks[i];
   463	
 > 464			hw = npcm8xx_clk_register_pll(dev, pll_clk, clk_base);
   465			if (IS_ERR(hw)) {
   466				dev_err(dev, "npcm8xx_clk: Can't register pll\n");
   467				goto unregister_refclk;
   468			}
   469		}
   470	
   471		/* Register fixed dividers */
   472		hw = devm_clk_hw_register_fixed_factor(dev, NPCM8XX_CLK_S_PLL1_DIV2,
   473						       NPCM8XX_CLK_S_PLL1, 0, 1, 2);
   474		if (IS_ERR(hw)) {
   475			dev_err(dev, "npcm8xx_clk: Can't register fixed div\n");
   476			goto unregister_refclk;
   477		}
   478	
   479		hw = devm_clk_hw_register_fixed_factor(dev, NPCM8XX_CLK_S_PLL2_DIV2,
   480						       NPCM8XX_CLK_S_PLL2, 0, 1, 2);
   481		if (IS_ERR(hw)) {
   482			dev_err(dev, "npcm8xx_clk: Can't register pll div2\n");
   483			goto unregister_refclk;
   484		}
   485	
   486		hw = devm_clk_hw_register_fixed_factor(dev, NPCM8XX_CLK_S_PRE_CLK,
   487						       NPCM8XX_CLK_S_CPU_MUX, 0, 1, 2);
   488		if (IS_ERR(hw)) {
   489			dev_err(dev, "npcm8xx_clk: Can't register ckclk div2\n");
   490			goto unregister_refclk;
   491		}
   492	
   493		hw = devm_clk_hw_register_fixed_factor(dev, NPCM8XX_CLK_S_AXI,
   494						       NPCM8XX_CLK_S_TH, 0, 1, 2);
   495		if (IS_ERR(hw)) {
   496			dev_err(dev, "npcm8xx_clk: Can't register axi div2\n");
   497			goto unregister_refclk;
   498		}
   499	
   500		hw = devm_clk_hw_register_fixed_factor(dev, NPCM8XX_CLK_S_ATB,
   501						       NPCM8XX_CLK_S_AXI, 0, 1, 2);
   502		if (IS_ERR(hw)) {
   503			dev_err(dev, "npcm8xx_clk: Can't register atb div2\n");
   504			goto unregister_refclk;
   505		}
   506	
   507		/* Register clock dividers specified in npcm8xx_divs */
   508		for (i = 0; i < ARRAY_SIZE(npcm8xx_divs); i++) {
   509			const struct npcm8xx_clk_div_data *div_data = &npcm8xx_divs[i];
   510	
   511			hw = devm_clk_hw_register_divider(dev, div_data->name,
   512							  div_data->parent_name,
   513							  div_data->flags,
   514							  clk_base + div_data->reg,
   515							  div_data->shift,
   516							  div_data->width,
   517							  div_data->clk_divider_flags,
   518							  &npcm8xx_clk_lock);
   519			if (IS_ERR(hw)) {
   520				dev_err(dev, "npcm8xx_clk: Can't register div table\n");
   521				goto unregister_refclk;
   522			}
   523	
   524			if (div_data->onecell_idx >= 0)
   525				npcm8xx_clk_data->hws[div_data->onecell_idx] = hw;
   526		}
   527	
   528		/* Register muxes */
   529		for (i = 0; i < ARRAY_SIZE(npcm8xx_muxes); i++) {
   530			const struct npcm8xx_clk_mux_data *mux_data = &npcm8xx_muxes[i];
   531	
   532			hw = clk_hw_register_mux_table(dev, mux_data->name,
   533						       mux_data->parent_names,
   534						       mux_data->num_parents,
   535						       mux_data->flags,
   536						       clk_base + NPCM8XX_CLKSEL,
   537						       mux_data->shift,
   538						       mux_data->mask, 0,
   539						       mux_data->table,
   540						       &npcm8xx_clk_lock);
   541	
   542			if (IS_ERR(hw)) {
   543				dev_err(dev, "npcm8xx_clk: Can't register mux\n");
   544				goto err_mux_clk;
   545			}
   546	
   547			if (mux_data->onecell_idx >= 0)
   548				npcm8xx_clk_data->hws[mux_data->onecell_idx] = hw;
   549		}
   550	
   551		err = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
   552						  npcm8xx_clk_data);
   553		if (err) {
   554			dev_err(dev, "unable to add clk provider\n");
   555			hw = ERR_PTR(err);
   556			goto err_mux_clk;
   557		}
   558	
   559		return err;
   560	
   561	err_mux_clk:
   562		while (i--) {
   563			if (npcm8xx_muxes[i].onecell_idx >= 0)
   564				clk_hw_unregister_mux(npcm8xx_clk_data->hws[npcm8xx_muxes[i].onecell_idx]);
   565		}
   566	unregister_refclk:
   567		clk_hw_unregister(npcm8xx_clk_data->hws[NPCM8XX_CLK_REFCLK]);
   568		return PTR_ERR(hw);
   569	}
   570	

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

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