linux-kernel - Re: [PATCH 11/11] drm: remove unused and redundant callbacks

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Message-ID: <201706220036.6WxRju5X%fengguang.wu@intel.com>
Date:   Thu, 22 Jun 2017 00:34:36 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Peter Rosin <peda@...ntia.se>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Peter Rosin <peda@...ntia.se>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Dave Airlie <airlied@...hat.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Sean Paul <seanpaul@...omium.org>,
        Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Yannick Fertre <yannick.fertre@...com>,
        Philippe Cornu <philippe.cornu@...com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Vincent Abriou <vincent.abriou@...com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        virtualization@...ts.linux-foundation.org,
        intel-gfx@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        Boris Brezillon <boris.brezillon@...e-electrons.com>
Subject: Re: [PATCH 11/11] drm: remove unused and redundant callbacks

Hi Peter,

[auto build test ERROR on drm/drm-next]
[also build test ERROR on next-20170621]
[cannot apply to v4.12-rc6]
[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/Peter-Rosin/improve-the-fb_setcmap-helper/20170621-205441
base:   git://people.freedesktop.org/~airlied/linux.git drm-next
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

>> drivers/gpu//drm/armada/armada_fbdev.c:121:2: error: unknown field 'gamma_set' specified in initializer
     .gamma_set = armada_drm_crtc_gamma_set,
     ^
>> drivers/gpu//drm/armada/armada_fbdev.c:121:15: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .gamma_set = armada_drm_crtc_gamma_set,
                  ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu//drm/armada/armada_fbdev.c:121:15: note: (near initialization for 'armada_fb_helper_funcs.fb_probe')
>> drivers/gpu//drm/armada/armada_fbdev.c:122:2: error: unknown field 'gamma_get' specified in initializer
     .gamma_get = armada_drm_crtc_gamma_get,
     ^
   drivers/gpu//drm/armada/armada_fbdev.c:122:15: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .gamma_get = armada_drm_crtc_gamma_get,
                  ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu//drm/armada/armada_fbdev.c:122:15: note: (near initialization for 'armada_fb_helper_funcs.initial_config')
   cc1: some warnings being treated as errors

vim +/gamma_set +121 drivers/gpu//drm/armada/armada_fbdev.c

96f60e37 Russell King   2012-08-15  115  			ret = 1;
96f60e37 Russell King   2012-08-15  116  	}
96f60e37 Russell King   2012-08-15  117  	return ret;
96f60e37 Russell King   2012-08-15  118  }
96f60e37 Russell King   2012-08-15  119  
3a493879 Thierry Reding 2014-06-27  120  static const struct drm_fb_helper_funcs armada_fb_helper_funcs = {
96f60e37 Russell King   2012-08-15 @121  	.gamma_set	= armada_drm_crtc_gamma_set,
96f60e37 Russell King   2012-08-15 @122  	.gamma_get	= armada_drm_crtc_gamma_get,
96f60e37 Russell King   2012-08-15  123  	.fb_probe	= armada_fb_probe,
96f60e37 Russell King   2012-08-15  124  };
96f60e37 Russell King   2012-08-15  125  

:::::: The code at line 121 was first introduced by commit
:::::: 96f60e37dc66091bde8d5de136ff6fda09f2d799 DRM: Armada: Add Armada DRM driver

:::::: TO: Russell King <rmk+kernel@....linux.org.uk>
:::::: CC: Russell King <rmk+kernel@....linux.org.uk>

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