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Date:   Mon, 1 Jun 2020 10:24:01 +0530
From:   Sumit Garg <sumit.garg@...aro.org>
To:     kbuild test robot <lkp@...el.com>
Cc:     Daniel Thompson <daniel.thompson@...aro.org>,
        kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        kgdb-bugreport@...ts.sourceforge.net,
        Jason Wessel <jason.wessel@...driver.com>,
        Douglas Anderson <dianders@...omium.org>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        jslaby@...e.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 4/4] kdb: Switch to use safer dbg_io_ops over console APIs

On Sun, 31 May 2020 at 10:58, kbuild test robot <lkp@...el.com> wrote:
>
> Hi Sumit,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on tty/tty-testing]
> [also build test ERROR on usb/usb-testing v5.7-rc7 next-20200529]
> [cannot apply to kgdb/kgdb-next]
> [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/Sumit-Garg/kdb-Improve-console-handling/20200531-075431
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
> config: x86_64-allyesconfig (attached as .config)
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2388a096e7865c043e83ece4e26654bd3d1a20d5)
> 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: kbuild test robot <lkp@...el.com>
>
> All errors (new ones prefixed by >>, old ones prefixed by <<):
>
> >> drivers/usb/early/ehci-dbgp.c:1062:24: error: assigning to 'struct console *' from incompatible type 'struct console'; take the address with &
> kgdbdbgp_io_ops.cons = early_dbgp_console;
> ^ ~~~~~~~~~~~~~~~~~~
> &
> 1 error generated.
>

Ah, my bad. Will fix it up in the next version.

-Sumit

> vim +1062 drivers/usb/early/ehci-dbgp.c
>
>   1046
>   1047  static int __init kgdbdbgp_parse_config(char *str)
>   1048  {
>   1049          char *ptr;
>   1050
>   1051          if (!ehci_debug) {
>   1052                  if (early_dbgp_init(str))
>   1053                          return -1;
>   1054          }
>   1055          ptr = strchr(str, ',');
>   1056          if (ptr) {
>   1057                  ptr++;
>   1058                  kgdbdbgp_wait_time = simple_strtoul(ptr, &ptr, 10);
>   1059          }
>   1060          kgdb_register_io_module(&kgdbdbgp_io_ops);
>   1061          if (early_dbgp_console.index != -1)
> > 1062                  kgdbdbgp_io_ops.cons = early_dbgp_console;
>   1063
>   1064          return 0;
>   1065  }
>   1066  early_param("kgdbdbgp", kgdbdbgp_parse_config);
>   1067
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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