Hi Liu,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on shawnguo/for-next]
[also build test ERROR on robh/for-next drm-intel/for-linux-next 
drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next 
linus/master v5.12-rc3 next-20210319]
[cannot apply to drm/drm-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    
https://github.com/0day-ci/linux/commits/Liu-Ying/Add-some-DRM-bridge-drivers-support-for-i-MX8qm-qxp-SoCs/20210317-115847
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git 
for-next
config: x86_64-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # 
https://github.com/0day-ci/linux/commit/482264f815494bc2e90bde5f7b47a60331b81817
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Liu-Ying/Add-some-DRM-bridge-drivers-support-for-i-MX8qm-qxp-SoCs/20210317-115847
        git checkout 482264f815494bc2e90bde5f7b47a60331b81817
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

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

All errors (new ones prefixed by >>):

   drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c:65:16: warning: 'struct 
phy_configure_opts_lvds' declared inside parameter list will not be visible 
outside of this definition or declaration
      65 |         struct phy_configure_opts_lvds *phy_cfg)
         |                ^~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c: In function 
'imx8qxp_ldb_set_phy_cfg':
>> drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c:67:9: error: dereferencing 
>> pointer to incomplete type 'struct phy_configure_opts_lvds'
      67 |  phy_cfg->bits_per_lane_and_dclk_cycle = 7;
         |         ^~
   drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c: In function 
'imx8qxp_ldb_bridge_atomic_check':
>> drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c:94:49: error: 'union 
>> phy_configure_opts' has no member named 'lvds'
      94 |  struct phy_configure_opts_lvds *phy_cfg = &opts.lvds;
         |                                                 ^
>> drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c:102:57: error: passing argument 
>> 4 of 'imx8qxp_ldb_set_phy_cfg' from incompatible pointer type 
>> [-Werror=incompatible-pointer-types]
     102 |  imx8qxp_ldb_set_phy_cfg(imx8qxp_ldb, di_clk, is_split, phy_cfg);
         |                                                         ^~~~~~~
         |                                                         |
         |                                                         struct 
phy_configure_opts_lvds *
   drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c:65:41: note: expected 'struct 
phy_configure_opts_lvds *' but argument is of type 'struct 
phy_configure_opts_lvds *'
      65 |         struct phy_configure_opts_lvds *phy_cfg)
         |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
   drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c: In function 
'imx8qxp_ldb_bridge_mode_set':
   drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c:136:49: error: 'union 
phy_configure_opts' has no member named 'lvds'
     136 |  struct phy_configure_opts_lvds *phy_cfg = &opts.lvds;
         |                                                 ^
   drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c:162:57: error: passing argument 
4 of 'imx8qxp_ldb_set_phy_cfg' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
     162 |  imx8qxp_ldb_set_phy_cfg(imx8qxp_ldb, di_clk, is_split, phy_cfg);
         |                                                         ^~~~~~~
         |                                                         |
         |                                                         struct 
phy_configure_opts_lvds *
   drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c:65:41: note: expected 'struct 
phy_configure_opts_lvds *' but argument is of type 'struct 
phy_configure_opts_lvds *'
      65 |         struct phy_configure_opts_lvds *phy_cfg)
         |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
   cc1: some warnings being treated as errors


vim +67 drivers/gpu/drm/bridge/imx/imx8qxp-ldb-drv.c

    62  
    63  static void imx8qxp_ldb_set_phy_cfg(struct imx8qxp_ldb *imx8qxp_ldb,
    64                                      unsigned long di_clk, bool is_split,
    65                                      struct phy_configure_opts_lvds 
*phy_cfg)
    66  {
  > 67          phy_cfg->bits_per_lane_and_dclk_cycle = 7;
    68          phy_cfg->lanes = 4;
    69  
    70          if (is_split) {
    71                  phy_cfg->differential_clk_rate = di_clk / 2;
    72                  phy_cfg->is_slave = !imx8qxp_ldb->companion;
    73          } else {
    74                  phy_cfg->differential_clk_rate = di_clk;
    75                  phy_cfg->is_slave = false;
    76          }
    77  }
    78  
    79  static int imx8qxp_ldb_bridge_atomic_check(struct drm_bridge *bridge,
    80                                     struct drm_bridge_state 
*bridge_state,
    81                                     struct drm_crtc_state *crtc_state,
    82                                     struct drm_connector_state 
*conn_state)
    83  {
    84          struct ldb_channel *ldb_ch = bridge->driver_private;
    85          struct ldb *ldb = ldb_ch->ldb;
    86          struct imx8qxp_ldb_channel *imx8qxp_ldb_ch =
    87                                          
base_to_imx8qxp_ldb_channel(ldb_ch);
    88          struct imx8qxp_ldb *imx8qxp_ldb = base_to_imx8qxp_ldb(ldb);
    89          struct drm_bridge *companion = imx8qxp_ldb->companion;
    90          struct drm_display_mode *adj = &crtc_state->adjusted_mode;
    91          unsigned long di_clk = adj->clock * 1000;
    92          bool is_split = ldb_channel_is_split_link(ldb_ch);
    93          union phy_configure_opts opts = { };
  > 94          struct phy_configure_opts_lvds *phy_cfg = &opts.lvds;
    95          int ret;
    96  
    97          ret = ldb_bridge_atomic_check_helper(bridge, bridge_state,
    98                                                  crtc_state, conn_state);
    99          if (ret)
   100                  return ret;
   101  
 > 102          imx8qxp_ldb_set_phy_cfg(imx8qxp_ldb, di_clk, is_split, phy_cfg);
   103          ret = phy_validate(imx8qxp_ldb_ch->phy, PHY_MODE_LVDS, 0, 
&opts);
   104          if (ret < 0) {
   105                  DRM_DEV_DEBUG_DRIVER(imx8qxp_ldb->dev,
   106                                       "failed to validate PHY: %d\n", 
ret);
   107                  return ret;
   108          }
   109  
   110          if (is_split && companion) {
   111                  ret = companion->funcs->atomic_check(companion,
   112                                          bridge_state, crtc_state, 
conn_state);
   113                  if (ret)
   114                          return ret;
   115          }
   116  
   117          return ret;
   118  }
   119  

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

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