linux-kernel - Re: [PATCH 4/5] clk: sophgo: Add SG2042 clock generator driver

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Date:   Wed, 15 Nov 2023 21:02:55 +0800
From:   kernel test robot <lkp@...el.com>
To:     Chen Wang <unicornxw@...il.com>, aou@...s.berkeley.edu,
        chao.wei@...hgo.com, conor@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
        palmer@...belt.com, paul.walmsley@...ive.com,
        richardcochran@...il.com, robh+dt@...nel.org, sboyd@...nel.org,
        devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        haijiao.liu@...hgo.com, xiaoguang.xing@...hgo.com
Cc:     oe-kbuild-all@...ts.linux.dev, Chen Wang <unicorn_wang@...look.com>
Subject: Re: [PATCH 4/5] clk: sophgo: Add SG2042 clock generator driver

Hi Chen,

kernel test robot noticed the following build warnings:

[auto build test WARNING on b85ea95d086471afb4ad062012a4d73cd328fa86]

url:    https://github.com/intel-lab-lkp/linux/commits/Chen-Wang/dt-bindings-clock-sophgo-Add-SG2042-clock-definitions/20231113-212401
base:   b85ea95d086471afb4ad062012a4d73cd328fa86
patch link:    https://lore.kernel.org/r/1000e8d546514973364478271564356352a46ed5.1699879741.git.unicorn_wang%40outlook.com
patch subject: [PATCH 4/5] clk: sophgo: Add SG2042 clock generator driver
config: riscv-rv32_defconfig (https://download.01.org/0day-ci/archive/20231115/202311152042.tMDnRsFe-lkp@intel.com/config)
compiler: riscv32-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231115/202311152042.tMDnRsFe-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311152042.tMDnRsFe-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/clk/sophgo/clk-sophgo-sg2042.c: In function '__sg2042_get_pll_ctl_setting':
>> drivers/clk/sophgo/clk-sophgo-sg2042.c:25:28: warning: integer overflow in expression of type 'long int' results in '-1094967296' [-Woverflow]
      25 | #define PLL_FREQ_MAX (3200 * MHZ)
         |                            ^
   drivers/clk/sophgo/clk-sophgo-sg2042.c:217:65: note: in expansion of macro 'PLL_FREQ_MAX'
     217 |                         if (foutvco < PLL_FREQ_MIN || foutvco > PLL_FREQ_MAX
         |                                                                 ^~~~~~~~~~~~


vim +25 drivers/clk/sophgo/clk-sophgo-sg2042.c

    23	
    24	#define PLL_FREQ_MIN (16 * MHZ)
  > 25	#define PLL_FREQ_MAX (3200 * MHZ)
    26	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki