Hi Sankeerth, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master v5.12 next-20210505] [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/Sankeerth-Billakanti/Add-support-for-next-gen-eDP-driver-on-SnapDragon/20210505-162011 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: arm-imx_v6_v7_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/a7bc50c70f53224d6cd5d0bd07371ad34d99a75e git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Sankeerth-Billakanti/Add-support-for-next-gen-eDP-driver-on-SnapDragon/20210505-162011 git checkout a7bc50c70f53224d6cd5d0bd07371ad34d99a75e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/msm/edp/v510/edp_v510_ctrl.c:360:5: warning: no previous prototype for 'edp_clk_enable' [-Wmissing-prototypes] 360 | int edp_clk_enable(struct edp_ctrl *ctrl, | ^~~~~~~~~~~~~~ drivers/gpu/drm/msm/edp/v510/edp_v510_ctrl.c: In function 'edp_fill_link_cfg': >> drivers/gpu/drm/msm/edp/v510/edp_v510_ctrl.c:587:6: warning: variable 'bpp' set but not used [-Wunused-but-set-variable] 587 | u32 bpp; | ^~~ >> drivers/gpu/drm/msm/edp/v510/edp_v510_ctrl.c:586:6: warning: variable 'prate' set but not used [-Wunused-but-set-variable] 586 | u32 prate; | ^~~~~ vim +/edp_clk_enable +360 drivers/gpu/drm/msm/edp/v510/edp_v510_ctrl.c 359 > 360 int edp_clk_enable(struct edp_ctrl *ctrl, 361 enum edp_pm_type pm_type, bool enable) 362 { 363 int rc = 0; 364 365 if (pm_type != EDP_CORE_PM && pm_type != EDP_CTRL_PM && 366 pm_type != EDP_STREAM_PM) { 367 DRM_ERROR("unsupported power module\n"); 368 return -EINVAL; 369 } 370 371 if (enable) { 372 if (pm_type == EDP_CORE_PM && ctrl->core_clks_on) { 373 DRM_DEBUG_DP("core clks already enabled\n"); 374 return 0; 375 } 376 377 if (pm_type == EDP_CTRL_PM && ctrl->link_clks_on) { 378 DRM_DEBUG_DP("links clks already enabled\n"); 379 return 0; 380 } 381 382 if (pm_type == EDP_STREAM_PM && ctrl->stream_clks_on) { 383 DRM_DEBUG_DP("pixel clks already enabled\n"); 384 return 0; 385 } 386 387 if ((pm_type == EDP_CTRL_PM) && (!ctrl->core_clks_on)) { 388 DRM_DEBUG_DP("Enable core clks before link clks\n"); 389 390 rc = edp_clk_set_rate(ctrl, EDP_CORE_PM, enable); 391 if (rc) { 392 DRM_ERROR("fail to enable clks: core. err=%d\n", 393 rc); 394 return rc; 395 } 396 ctrl->core_clks_on = true; 397 } 398 } 399 400 rc = edp_clk_set_rate(ctrl, pm_type, enable); 401 if (rc) { 402 DRM_ERROR("failed to '%s' clks. err=%d\n", 403 enable ? "enable" : "disable", rc); 404 return rc; 405 } 406 407 if (pm_type == EDP_CORE_PM) 408 ctrl->core_clks_on = enable; 409 else if (pm_type == EDP_STREAM_PM) 410 ctrl->stream_clks_on = enable; 411 else 412 ctrl->link_clks_on = enable; 413 414 DRM_DEBUG_DP("stream_clks:%s link_clks:%s core_clks:%s\n", 415 ctrl->stream_clks_on ? "on" : "off", 416 ctrl->link_clks_on ? "on" : "off", 417 ctrl->core_clks_on ? "on" : "off"); 418 419 return 0; 420 } 421 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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