Re: [PATCH 07/22] drm/i2c/tda998x: Use simple encoder

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Hi Thomas,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20200305]
[also build test ERROR on v5.6-rc4]
[cannot apply to rockchip/for-next shawnguo/for-next sunxi/sunxi/for-next tegra/for-next linus/master v5.6-rc4 v5.6-rc3 v5.6-rc2]
[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/Thomas-Zimmermann/drm-Convert-drivers-to-drm_simple_encoder_init/20200306-045931
base:    47466dcf84ee66a973ea7d2fca7e582fe9328932
config: x86_64-randconfig-h002-20200307 (attached as .config)
compiler: gcc-7 (Debian 7.5.0-5) 7.5.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   drivers/gpu/drm/i2c/tda998x_drv.c: In function 'tda998x_encoder_init':
>> drivers/gpu/drm/i2c/tda998x_drv.c:2018:8: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration]
     ret = drm_simple_encoder_init(drm, &priv->encoder,
           ^~~~~~~~~~~~~~~~~~~~~~~
           drm_encoder_init
   cc1: some warnings being treated as errors

vim +2018 drivers/gpu/drm/i2c/tda998x_drv.c

  2000	
  2001	static int tda998x_encoder_init(struct device *dev, struct drm_device *drm)
  2002	{
  2003		struct tda998x_priv *priv = dev_get_drvdata(dev);
  2004		u32 crtcs = 0;
  2005		int ret;
  2006	
  2007		if (dev->of_node)
  2008			crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
  2009	
  2010		/* If no CRTCs were found, fall back to our old behaviour */
  2011		if (crtcs == 0) {
  2012			dev_warn(dev, "Falling back to first CRTC\n");
  2013			crtcs = 1 << 0;
  2014		}
  2015	
  2016		priv->encoder.possible_crtcs = crtcs;
  2017	
> 2018		ret = drm_simple_encoder_init(drm, &priv->encoder,
  2019					      DRM_MODE_ENCODER_TMDS);
  2020		if (ret)
  2021			goto err_encoder;
  2022	
  2023		ret = drm_bridge_attach(&priv->encoder, &priv->bridge, NULL, 0);
  2024		if (ret)
  2025			goto err_bridge;
  2026	
  2027		return 0;
  2028	
  2029	err_bridge:
  2030		drm_encoder_cleanup(&priv->encoder);
  2031	err_encoder:
  2032		return ret;
  2033	}
  2034	

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

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