[pinchartl-media:drm/du/compile-test 9/14] drivers/gpu/drm/imx/dcss/dcss-kms.c:94:8: error: implicit declaration of function 'drm_bridge_attach'

[pinchartl-media:drm/du/compile-test 9/14] drivers/gpu/drm/imx/dcss/dcss-kms.c:94:8: error: implicit declaration of function 'drm_bridge_attach'

[kernel test robot]

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Hi Laurent,

First bad commit (maybe != root cause):

tree:   git://linuxtv.org/pinchartl/media.git drm/du/compile-test
head:   660500b4c311c0e60c5a05c603767cb4cac44751
commit: e112c91ed85ff80dd6731b9eb7ded6c34e0b854a [9/14] drm/imx/dcss: Enable COMPILE_TEST on all architectures
config: i386-buildonly-randconfig-r004-20210804 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        git remote add pinchartl-media git://linuxtv.org/pinchartl/media.git
        git fetch --no-tags pinchartl-media drm/du/compile-test
        git checkout e112c91ed85ff80dd6731b9eb7ded6c34e0b854a
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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/imx/dcss/dcss-kms.c: In function 'dcss_kms_bridge_connector_init':
>> drivers/gpu/drm/imx/dcss/dcss-kms.c:94:8: error: implicit declaration of function 'drm_bridge_attach' [-Werror=implicit-function-declaration]
      94 |  ret = drm_bridge_attach(encoder, bridge, NULL,
         |        ^~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/imx/dcss/dcss-kms.c:95:5: error: 'DRM_BRIDGE_ATTACH_NO_CONNECTOR' undeclared (first use in this function)
      95 |     DRM_BRIDGE_ATTACH_NO_CONNECTOR);
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/imx/dcss/dcss-kms.c:95:5: note: each undeclared identifier is reported only once for each function it appears in
   cc1: some warnings being treated as errors


vim +/drm_bridge_attach +94 drivers/gpu/drm/imx/dcss/dcss-kms.c

9021c317b77024f Laurentiu Palcu  2020-07-31   64  
e7033bdfd43b852 Laurentiu Palcu  2020-07-31   65  static int dcss_kms_bridge_connector_init(struct dcss_kms_dev *kms)
9021c317b77024f Laurentiu Palcu  2020-07-31   66  {
9021c317b77024f Laurentiu Palcu  2020-07-31   67  	struct drm_device *ddev = &kms->base;
9021c317b77024f Laurentiu Palcu  2020-07-31   68  	struct drm_encoder *encoder = &kms->encoder;
9021c317b77024f Laurentiu Palcu  2020-07-31   69  	struct drm_crtc *crtc = (struct drm_crtc *)&kms->crtc;
9021c317b77024f Laurentiu Palcu  2020-07-31   70  	struct drm_panel *panel;
9021c317b77024f Laurentiu Palcu  2020-07-31   71  	struct drm_bridge *bridge;
9021c317b77024f Laurentiu Palcu  2020-07-31   72  	int ret;
9021c317b77024f Laurentiu Palcu  2020-07-31   73  
9021c317b77024f Laurentiu Palcu  2020-07-31   74  	ret = drm_of_find_panel_or_bridge(ddev->dev->of_node, 0, 0,
9021c317b77024f Laurentiu Palcu  2020-07-31   75  					  &panel, &bridge);
9021c317b77024f Laurentiu Palcu  2020-07-31   76  	if (ret)
9021c317b77024f Laurentiu Palcu  2020-07-31   77  		return ret;
9021c317b77024f Laurentiu Palcu  2020-07-31   78  
9021c317b77024f Laurentiu Palcu  2020-07-31   79  	if (!bridge) {
9021c317b77024f Laurentiu Palcu  2020-07-31   80  		dev_err(ddev->dev, "No bridge found %d.\n", ret);
9021c317b77024f Laurentiu Palcu  2020-07-31   81  		return -ENODEV;
9021c317b77024f Laurentiu Palcu  2020-07-31   82  	}
9021c317b77024f Laurentiu Palcu  2020-07-31   83  
9021c317b77024f Laurentiu Palcu  2020-07-31   84  	encoder->possible_crtcs = drm_crtc_mask(crtc);
9021c317b77024f Laurentiu Palcu  2020-07-31   85  
9021c317b77024f Laurentiu Palcu  2020-07-31   86  	ret = drm_encoder_init(&kms->base, encoder,
9021c317b77024f Laurentiu Palcu  2020-07-31   87  			       &dcss_kms_simple_encoder_funcs,
9021c317b77024f Laurentiu Palcu  2020-07-31   88  			       DRM_MODE_ENCODER_NONE, NULL);
9021c317b77024f Laurentiu Palcu  2020-07-31   89  	if (ret) {
9021c317b77024f Laurentiu Palcu  2020-07-31   90  		dev_err(ddev->dev, "Failed initializing encoder %d.\n", ret);
9021c317b77024f Laurentiu Palcu  2020-07-31   91  		return ret;
9021c317b77024f Laurentiu Palcu  2020-07-31   92  	}
9021c317b77024f Laurentiu Palcu  2020-07-31   93  
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  @94  	ret = drm_bridge_attach(encoder, bridge, NULL,
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  @95  				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
fb8d617f8fd64f5 Laurent Pinchart 2021-03-23   96  	if (ret < 0)
e7033bdfd43b852 Laurentiu Palcu  2020-07-31   97  		return ret;
e7033bdfd43b852 Laurentiu Palcu  2020-07-31   98  
e7033bdfd43b852 Laurentiu Palcu  2020-07-31   99  	kms->connector = drm_bridge_connector_init(ddev, encoder);
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  100  	if (IS_ERR(kms->connector)) {
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  101  		dev_err(ddev->dev, "Unable to create bridge connector.\n");
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  102  		return PTR_ERR(kms->connector);
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  103  	}
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  104  
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  105  	drm_connector_attach_encoder(kms->connector, encoder);
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  106  
e7033bdfd43b852 Laurentiu Palcu  2020-07-31  107  	return 0;
9021c317b77024f Laurentiu Palcu  2020-07-31  108  }
9021c317b77024f Laurentiu Palcu  2020-07-31  109  

:::::: The code at line 94 was first introduced by commit
:::::: e7033bdfd43b85281b63d281b4dad3b9119f4427 drm/imx/dcss: use drm_bridge_connector API

:::::: TO: Laurentiu Palcu <laurentiu.palcu@nxp.com>
:::::: CC: Lucas Stach <l.stach@pengutronix.de>

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

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