Hi "Guido,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.4-rc4 next-20191018]
[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/Guido-G-nther/dt-bindings-display-bridge-Add-binding-for-NWL-mipi-dsi-host-controller/20191021-180825
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
7d194c2100ad2a6dded545887d02754948ca5241
config: mips-allmodconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 7.4.0
reproduce:
        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
        GCC_VERSION=7.4.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>

All errors (new ones prefixed by >>):

   drivers/gpu/drm/bridge/nwl-dsi.c: In function 'nwl_dsi_host_attach':
>> drivers/gpu/drm/bridge/nwl-dsi.c:384:12: error: too few arguments to 
>> function 'drm_panel_bridge_add'
      bridge = drm_panel_bridge_add(panel);
               ^~~~~~~~~~~~~~~~~~~~
   In file included from include/drm/drm_crtc.h:44:0,
                    from include/drm/drm_atomic_helper.h:31,
                    from drivers/gpu/drm/bridge/nwl-dsi.c:24:
   include/drm/drm_bridge.h:432:20: note: declared here
    struct drm_bridge *drm_panel_bridge_add(struct drm_panel *panel,
                       ^~~~~~~~~~~~~~~~~~~~

vim +/drm_panel_bridge_add +384 drivers/gpu/drm/bridge/nwl-dsi.c

   358  
   359  static int nwl_dsi_host_attach(struct mipi_dsi_host *dsi_host,
   360                                 struct mipi_dsi_device *device)
   361  {
   362          struct nwl_dsi *dsi = container_of(dsi_host, struct nwl_dsi, 
dsi_host);
   363          struct device *dev = dsi->dev;
   364          struct drm_bridge *bridge;
   365          struct drm_panel *panel;
   366          int ret;
   367  
   368          DRM_DEV_INFO(dev, "lanes=%u, format=0x%x flags=0x%lx\n", 
device->lanes,
   369                       device->format, device->mode_flags);
   370  
   371          if (device->lanes < 1 || device->lanes > 4)
   372                  return -EINVAL;
   373  
   374          dsi->lanes = device->lanes;
   375          dsi->format = device->format;
   376          dsi->dsi_mode_flags = device->mode_flags;
   377  
   378          ret = drm_of_find_panel_or_bridge(dsi->dev->of_node, 1, 0, 
&panel,
   379                                            &bridge);
   380          if (ret)
   381                  return ret;
   382  
   383          if (panel) {
 > 384                  bridge = drm_panel_bridge_add(panel);
   385                  if (IS_ERR(bridge))
   386                          return PTR_ERR(bridge);
   387          }
   388  
   389          dsi->panel_bridge = bridge;
   390          drm_bridge_add(&dsi->bridge);
   391  
   392          return 0;
   393  }
   394  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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