Re: [PATCH v1 17/22] drm/tilcdc: Backlight update

From: kernel test robot <lkp@intel.com>
To: Sam Ravnborg <sam@ravnborg.org>,
	dri-devel@lists.freedesktop.org,
	Jingoo Han <jingoohan1@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	Daniel Thompson <daniel.thompson@linaro.org>
Cc: kbuild-all@lists.01.org, Daniel Vetter <daniel.vetter@ffwll.ch>,
	Jyri Sarha <jsarha@ti.com>,
	Tomi Valkeinen <tomi.valkeinen@ti.com>,
	Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>,
	Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [PATCH v1 17/22] drm/tilcdc: Backlight update
Date: Sun, 2 Aug 2020 21:21:56 +0800
Message-ID: <202008022104.s9Ethiat%lkp@intel.com> (raw)
In-Reply-To: <20200802110636.1018743-18-sam@ravnborg.org>

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Hi Sam,

I love your patch! Yet something to improve:

[auto build test ERROR on backlight/for-backlight-next]
[also build test ERROR on next-20200731]
[cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm-tip/drm-tip linus/master drm/drm-next v5.8-rc7]
[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]

url:    https://github.com/0day-ci/linux/commits/Sam-Ravnborg/backlight-add-init-macros-and-accessors/20200802-190940
base:    for-backlight-next
config: arm-randconfig-r016-20200802 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/gpu/drm/tilcdc/tilcdc_panel.c: In function 'panel_encoder_dpms':
>> drivers/gpu/drm/tilcdc/tilcdc_panel.c:50:6: error: 'pmode' undeclared (first use in this function); did you mean 'mode'?
      50 |  if (pmode == DRM_MODE_DPMS_O)
         |      ^~~~~
         |      mode
   drivers/gpu/drm/tilcdc/tilcdc_panel.c:50:6: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/gpu/drm/tilcdc/tilcdc_panel.c:50:15: error: 'DRM_MODE_DPMS_O' undeclared (first use in this function); did you mean 'DRM_MODE_DPMS_ON'?
      50 |  if (pmode == DRM_MODE_DPMS_O)
         |               ^~~~~~~~~~~~~~~
         |               DRM_MODE_DPMS_ON

vim +50 drivers/gpu/drm/tilcdc/tilcdc_panel.c

    43	
    44	static void panel_encoder_dpms(struct drm_encoder *encoder, int mode)
    45	{
    46		struct panel_encoder *panel_encoder = to_panel_encoder(encoder);
    47		struct backlight_device *backlight = panel_encoder->mod->backlight;
    48		struct gpio_desc *gpio = panel_encoder->mod->enable_gpio;
    49	
  > 50		if (pmode == DRM_MODE_DPMS_O)
    51			backlight_set_power_on(backlight);
    52		else
    53			backlight_set_power_off(backlight);
    54	
    55		backlight_update_status(backlight);
    56	
    57		if (gpio)
    58			gpiod_set_value_cansleep(gpio,
    59						 mode == DRM_MODE_DPMS_ON ? 1 : 0);
    60	}
    61	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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