Hi Maarten, kernel test robot noticed the following build errors: [auto build test ERROR on drm-xe/drm-xe-next] [also build test ERROR on drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.12-rc1] [cannot apply to next-20241004] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Maarten-Lankhorst/drm-xe-display-Handle-stolen-bar-readout-in-the-same-way-as-lmem/20241004-000534 base: https://gitlab.freedesktop.org/drm/xe/kernel.git drm-xe-next patch link: https://lore.kernel.org/r/20241003154421.33805-4-maarten.lankhorst%40linux.intel.com patch subject: [PATCH v3 03/12] drm/i915/display: Use async flip when available for initial plane config config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20241004/202410042053.DCNgBMOr-lkp@xxxxxxxxx/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241004/202410042053.DCNgBMOr-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410042053.DCNgBMOr-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/gpu/drm/i915/display/skl_universal_plane.c:2814:14: error: call to undeclared function 'intel_read'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 2814 | plane_ctl = intel_read(i915, PLANE_CTL(pipe, plane_id)); | ^ 1 error generated. vim +/intel_read +2814 drivers/gpu/drm/i915/display/skl_universal_plane.c 2789 2790 bool skl_fixup_initial_plane_config(struct intel_crtc *crtc, 2791 const struct intel_initial_plane_config *plane_config) 2792 { 2793 struct drm_i915_private *i915 = to_i915(crtc->base.dev); 2794 struct intel_plane *plane = to_intel_plane(crtc->base.primary); 2795 const struct intel_plane_state *plane_state = 2796 to_intel_plane_state(plane->base.state); 2797 enum plane_id plane_id = plane->id; 2798 enum pipe pipe = crtc->pipe; 2799 u32 base, plane_ctl; 2800 2801 if (!plane_state->uapi.visible) 2802 return false; 2803 2804 base = intel_plane_ggtt_offset(plane_state); 2805 2806 /* 2807 * We may have moved the surface to a different 2808 * part of ggtt, make the plane aware of that. 2809 */ 2810 if (plane_config->base == base) 2811 return false; 2812 2813 /* Perform an async flip to the new surface. */ > 2814 plane_ctl = intel_read(i915, PLANE_CTL(pipe, plane_id)); -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki