linux-kernel - Re: [PATCH 1/2] kconfig: fix reverse dependency with tristate if-conditional

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Date:   Mon, 26 Nov 2018 18:05:50 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Ulf Magnusson <ulfalizer@...il.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Taehee Yoo <ap420073@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] kconfig: fix reverse dependency with tristate if-conditional

On Mon, Nov 26, 2018 at 5:17 PM kbuild test robot <lkp@...el.com> wrote:
>
> Hi Masahiro,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on masahiroy/kconfig]
> [also build test ERROR on v4.20-rc4]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url:    https://github.com/0day-ci/linux/commits/Masahiro-Yamada/kconfig-fix-reverse-dependency-with-tristate-if-conditional/20181126-152716
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git kconfig
> config: i386-randconfig-s1-201847 (attached as .config)
> compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=i386
>
> All errors (new ones prefixed by >>):


OK, this is not so easy to fix as I expected.


UML is not defined at all for i386,

'UML != n' is evaluated to 'y'.


I need to think about how to fix this.








>    drivers/input//mouse/synaptics.c: In function 'synaptics_create_intertouch':
> >> drivers/input//mouse/synaptics.c:1754:9: error: implicit declaration of function 'psmouse_smbus_init' [-Werror=implicit-function-declaration]
>      return psmouse_smbus_init(psmouse, &intertouch_board,
>             ^~~~~~~~~~~~~~~~~~
>    cc1: some warnings being treated as errors
>
> vim +/psmouse_smbus_init +1754 drivers/input//mouse/synaptics.c
>
> e839ffab Benjamin Tissoires 2017-03-02  1728
> e839ffab Benjamin Tissoires 2017-03-02  1729  static int synaptics_create_intertouch(struct psmouse *psmouse,
> e839ffab Benjamin Tissoires 2017-03-02  1730                                   struct synaptics_device_info *info,
> e839ffab Benjamin Tissoires 2017-03-02  1731                                   bool leave_breadcrumbs)
> e839ffab Benjamin Tissoires 2017-03-02  1732  {
> e839ffab Benjamin Tissoires 2017-03-02  1733    bool topbuttonpad =
> e839ffab Benjamin Tissoires 2017-03-02  1734            psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
> e839ffab Benjamin Tissoires 2017-03-02  1735            !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
> e839ffab Benjamin Tissoires 2017-03-02  1736    const struct rmi_device_platform_data pdata = {
> e839ffab Benjamin Tissoires 2017-03-02  1737            .sensor_pdata = {
> e839ffab Benjamin Tissoires 2017-03-02  1738                    .sensor_type = rmi_sensor_touchpad,
> e839ffab Benjamin Tissoires 2017-03-02  1739                    .axis_align.flip_y = true,
> 2b30297d Andrew Duggan      2017-10-09  1740                    .kernel_tracking = false,
> e839ffab Benjamin Tissoires 2017-03-02  1741                    .topbuttonpad = topbuttonpad,
> e839ffab Benjamin Tissoires 2017-03-02  1742            },
> e839ffab Benjamin Tissoires 2017-03-02  1743            .f30_data = {
> e839ffab Benjamin Tissoires 2017-03-02  1744                    .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
> e839ffab Benjamin Tissoires 2017-03-02  1745                    .trackstick_buttons =
> e839ffab Benjamin Tissoires 2017-03-02  1746                            !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
> e839ffab Benjamin Tissoires 2017-03-02  1747            },
> e839ffab Benjamin Tissoires 2017-03-02  1748    };
> e839ffab Benjamin Tissoires 2017-03-02  1749    const struct i2c_board_info intertouch_board = {
> e839ffab Benjamin Tissoires 2017-03-02  1750            I2C_BOARD_INFO("rmi4_smbus", 0x2c),
> e839ffab Benjamin Tissoires 2017-03-02  1751            .flags = I2C_CLIENT_HOST_NOTIFY,
> e839ffab Benjamin Tissoires 2017-03-02  1752    };
> e839ffab Benjamin Tissoires 2017-03-02  1753
> e839ffab Benjamin Tissoires 2017-03-02 @1754    return psmouse_smbus_init(psmouse, &intertouch_board,
> bf232e46 Benjamin Tissoires 2018-05-22  1755                              &pdata, sizeof(pdata), true,
> e839ffab Benjamin Tissoires 2017-03-02  1756                              leave_breadcrumbs);
> e839ffab Benjamin Tissoires 2017-03-02  1757  }
> e839ffab Benjamin Tissoires 2017-03-02  1758
>
> :::::: The code at line 1754 was first introduced by commit
> :::::: e839ffab028981ac77f650faf8c84f16e1719738 Input: synaptics - add support for Intertouch devices
>
> :::::: TO: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> :::::: CC: Dmitry Torokhov <dmitry.torokhov@...il.com>
>
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation



-- 
Best Regards
Masahiro Yamada