linux-kernel - Re: [PATCH] clk: qcom: ipq4019: fix apss cpu overclocking

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Message-ID: <CA+HBbNFpHugbM6LDGAtJHj4ZAz-K5ojkovaVZ04V3QJS-hytUw@mail.gmail.com>
Date:   Mon, 8 Jun 2020 10:54:34 +0200
From:   Robert Marko <robert.marko@...tura.hr>
To:     kernel test robot <lkp@...el.com>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michael Turquette <mturquette@...libre.com>, sboyd@...nel.org,
        Abhishek Sahu <absahu@...eaurora.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        Christian Lamparter <chunkeey@...il.com>,
        John Crispin <john@...ozen.org>
Subject: Re: [PATCH] clk: qcom: ipq4019: fix apss cpu overclocking

Sorry for asking, but are these warnings relevant?
GCC9.3 does not throw them

Regards
Robert

On Thu, Jun 4, 2020 at 10:25 PM kernel test robot <lkp@...el.com> wrote:
>
> Hi Robert,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on clk/clk-next]
> [also build test WARNING on v5.7 next-20200604]
> [if your patch is applied to the wrong git tree, please drop us a note to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
>
> url:    https://github.com/0day-ci/linux/commits/Robert-Marko/clk-qcom-ipq4019-fix-apss-cpu-overclocking/20200605-002859
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next
> config: x86_64-allyesconfig (attached as .config)
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project ac47588bc4ff5927a01ed6fcd269ce86aba52a7c)
> 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 x86_64 cross compiling tool for clang build
>         # apt-get install binutils-x86-64-linux-gnu
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
>
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
>
> >> drivers/clk/qcom/gcc-ipq4019.c:1247:24: warning: no previous prototype for function 'qcom_find_freq_close' [-Wmissing-prototypes]
> const struct freq_tbl *qcom_find_freq_close(const struct freq_tbl *f,
> ^
> drivers/clk/qcom/gcc-ipq4019.c:1247:7: note: declare 'static' if the function is not intended to be used outside of this translation unit
> const struct freq_tbl *qcom_find_freq_close(const struct freq_tbl *f,
> ^
> static
> 1 warning generated.
>
> vim +/qcom_find_freq_close +1247 drivers/clk/qcom/gcc-ipq4019.c
>
>   1245
>   1246
> > 1247  const struct freq_tbl *qcom_find_freq_close(const struct freq_tbl *f,
>   1248                                               unsigned long rate)
>   1249  {
>   1250          const struct freq_tbl *last = NULL;
>   1251
>   1252          for ( ; f->freq; f++) {
>   1253                  if (rate == f->freq)
>   1254                          return f;
>   1255
>   1256                  if (f->freq > rate) {
>   1257                          if (!last ||
>   1258                             (f->freq - rate) < (rate - last->freq))
>   1259                                  return f;
>   1260                          else
>   1261                                  return last;
>   1262                  }
>   1263                  last = f;
>   1264          }
>   1265
>   1266          return last;
>   1267  }
>   1268
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org