linux-kernel - drivers/gpu/drm/qxl/qxl_fb.c:76:15: error: variable 'qxl_defio' has initializer but incomplete type

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Date:	Wed, 10 Aug 2016 23:09:56 +0800
From:	kbuild test robot <fengguang.wu@...el.com>
To:	Tobias Jakobi <tjakobi@...h.uni-bielefeld.de>
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	Daniel Vetter <daniel.vetter@...ll.ch>
Subject: drivers/gpu/drm/qxl/qxl_fb.c:76:15: error: variable 'qxl_defio' has
 initializer but incomplete type

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a0cba2179ea4c1820fce2ee046b6ed90ecc56196
commit: 0b6320dfdfea4c68602fa3b8a8d944bf9e442079 drm/virtio: make fbdev support really optional
date:   3 weeks ago
config: x86_64-randconfig-n0-08102239 (attached as .config)
compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
reproduce:
        git checkout 0b6320dfdfea4c68602fa3b8a8d944bf9e442079
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

>> drivers/gpu/drm/qxl/qxl_fb.c:76:15: error: variable 'qxl_defio' has initializer but incomplete type
    static struct fb_deferred_io qxl_defio = {
                  ^
>> drivers/gpu/drm/qxl/qxl_fb.c:77:2: error: unknown field 'delay' specified in initializer
     .delay  = QXL_DIRTY_DELAY,
     ^
>> drivers/gpu/drm/qxl/qxl_fb.c:77:2: warning: excess elements in struct initializer [enabled by default]
   drivers/gpu/drm/qxl/qxl_fb.c:77:2: warning: (near initialization for 'qxl_defio') [enabled by default]
>> drivers/gpu/drm/qxl/qxl_fb.c:78:2: error: unknown field 'deferred_io' specified in initializer
     .deferred_io = drm_fb_helper_deferred_io,
     ^
   drivers/gpu/drm/qxl/qxl_fb.c:78:2: warning: excess elements in struct initializer [enabled by default]
   drivers/gpu/drm/qxl/qxl_fb.c:78:2: warning: (near initialization for 'qxl_defio') [enabled by default]
   drivers/gpu/drm/qxl/qxl_fb.c: In function 'qxlfb_create':
>> drivers/gpu/drm/qxl/qxl_fb.c:316:6: error: 'struct fb_info' has no member named 'fbdefio'
     info->fbdefio = &qxl_defio;
         ^

vim +/qxl_defio +76 drivers/gpu/drm/qxl/qxl_fb.c

f64122c1 Dave Airlie    2013-02-25  70  	if (image) {
f64122c1 Dave Airlie    2013-02-25  71  		memcpy(&qxl_fb_image->fb_image, image,
f64122c1 Dave Airlie    2013-02-25  72  		       sizeof(qxl_fb_image->fb_image));
f64122c1 Dave Airlie    2013-02-25  73  	}
f64122c1 Dave Airlie    2013-02-25  74  }
f64122c1 Dave Airlie    2013-02-25  75  
6d01f1f5 Dave Airlie    2013-04-16 @76  static struct fb_deferred_io qxl_defio = {
f64122c1 Dave Airlie    2013-02-25 @77  	.delay		= QXL_DIRTY_DELAY,
6819c3c2 Noralf Trønnes 2016-04-28 @78  	.deferred_io	= drm_fb_helper_deferred_io,
f64122c1 Dave Airlie    2013-02-25  79  };
f64122c1 Dave Airlie    2013-02-25  80  
f64122c1 Dave Airlie    2013-02-25  81  static struct fb_ops qxlfb_ops = {

:::::: The code at line 76 was first introduced by commit
:::::: 6d01f1f54c01877baad11389291c1aeab9c11e0f drm/qxl: make lots of things static.

:::::: TO: Dave Airlie <airlied@...hat.com>
:::::: CC: Dave Airlie <airlied@...hat.com>

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