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-dri... 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/482264f815494bc2e90bde5f7b47a6033... 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 <lkp(a)intel.com&gt; 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': 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': 94 | struct phy_configure_opts_lvds *phy_cfg = &opts.lvds; | ^ 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 { 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 = { }; 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; 101 103 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-all@lists.01.org