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25 Nov 2021 16:26:57 -0800 Received: from kbuild by 9e1e9f9b3bcb with local (Exim 4.92) (envelope-from ) id 1mqP4q-00078k-L4; Fri, 26 Nov 2021 00:26:56 +0000 Date: Fri, 26 Nov 2021 08:26:28 +0800 From: kernel test robot To: Sascha Hauer Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, 0day robot Subject: drivers/gpu/drm/rockchip/rockchip_drm_vop2.c:2678:21: warning: variable 'main_plane' is uninitialized when used here Message-ID: <202111260815.v5s0FohX-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://github.com/0day-ci/linux/commits/UPDATE-20211117-234622/Sascha-Hauer/drm-rockchip-RK356x-VOP2-support/20211117-223601 head: bb17f3afe532266901ec476abd66abd2178e5cfb commit: bb17f3afe532266901ec476abd66abd2178e5cfb drm: rockchip: Add VOP2 driver date: 8 days ago config: hexagon-randconfig-r002-20211118 (https://download.01.org/0day-ci/archive/20211126/202111260815.v5s0FohX-lkp@intel.com/config) 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/bb17f3afe532266901ec476abd66abd2178e5cfb git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20211117-234622/Sascha-Hauer/drm-rockchip-RK356x-VOP2-support/20211117-223601 git checkout bb17f3afe532266901ec476abd66abd2178e5cfb # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/gpu/drm/rockchip/rockchip_drm_vop2.c:2678:21: warning: variable 'main_plane' is uninitialized when used here [-Wuninitialized] top_win_pstate = main_plane->state; ^~~~~~~~~~ drivers/gpu/drm/rockchip/rockchip_drm_vop2.c:2661:30: note: initialize the variable 'main_plane' to silence this warning struct drm_plane *main_plane; ^ = NULL >> drivers/gpu/drm/rockchip/rockchip_drm_vop2.c:2943:20: warning: variable 'plane' set but not used [-Wunused-but-set-variable] struct drm_plane *plane; ^ 2 warnings generated. -- >> drivers/gpu/drm/rockchip/rockchip_vop2_reg.c:521:35: warning: unused variable 'rk3568_area1_scl' [-Wunused-const-variable] static const struct vop2_scl_regs rk3568_area1_scl = { ^ >> drivers/gpu/drm/rockchip/rockchip_vop2_reg.c:541:35: warning: unused variable 'rk3568_area2_scl' [-Wunused-const-variable] static const struct vop2_scl_regs rk3568_area2_scl = { ^ >> drivers/gpu/drm/rockchip/rockchip_vop2_reg.c:561:35: warning: unused variable 'rk3568_area3_scl' [-Wunused-const-variable] static const struct vop2_scl_regs rk3568_area3_scl = { ^ 3 warnings generated. vim +/main_plane +2678 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c 2644 2645 /* 2646 * src: top layer 2647 * dst: bottom layer. 2648 * Cluster mixer default use win1 as top layer 2649 */ 2650 static void vop2_setup_cluster_alpha(struct vop2 *vop2, struct vop2_cluster *cluster) 2651 { 2652 uint32_t src_color_ctrl_offset = vop2->data->ctrl->cluster0_src_color_ctrl.offset; 2653 uint32_t dst_color_ctrl_offset = vop2->data->ctrl->cluster0_dst_color_ctrl.offset; 2654 uint32_t src_alpha_ctrl_offset = vop2->data->ctrl->cluster0_src_alpha_ctrl.offset; 2655 uint32_t dst_alpha_ctrl_offset = vop2->data->ctrl->cluster0_dst_alpha_ctrl.offset; 2656 uint32_t offset = (cluster->main->data->phys_id * 0x10); 2657 struct vop2_alpha_config alpha_config; 2658 struct vop2_alpha alpha; 2659 struct vop2_win *main_win = cluster->main; 2660 struct vop2_win *sub_win = cluster->sub; 2661 struct drm_plane *main_plane; 2662 struct drm_plane_state *top_win_pstate; 2663 struct drm_plane_state *bottom_win_pstate; 2664 bool src_pixel_alpha_en = false; 2665 uint16_t src_glb_alpha_val, dst_glb_alpha_val; 2666 bool premulti_en = false; 2667 bool swap = false; 2668 2669 if (!sub_win) { 2670 /* At one win mode, win0 is dst/bottom win, and win1 is a all zero src/top win */ 2671 top_win_pstate = NULL; 2672 bottom_win_pstate = main_win->base.state; 2673 src_glb_alpha_val = 0; 2674 dst_glb_alpha_val = main_win->base.state->alpha; 2675 } else { 2676 if (main_win->base.state->zpos > sub_win->base.state->zpos) { 2677 swap = 1; > 2678 top_win_pstate = main_plane->state; 2679 bottom_win_pstate = sub_win->base.state; 2680 src_glb_alpha_val = main_win->base.state->alpha; 2681 dst_glb_alpha_val = sub_win->base.state->alpha; 2682 } else { 2683 swap = 0; 2684 top_win_pstate = sub_win->base.state; 2685 bottom_win_pstate = main_plane->state; 2686 src_glb_alpha_val = sub_win->base.state->alpha; 2687 dst_glb_alpha_val = main_win->base.state->alpha; 2688 } 2689 2690 if (!top_win_pstate->fb) 2691 return; 2692 2693 if (top_win_pstate->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI) 2694 premulti_en = true; 2695 else 2696 premulti_en = false; 2697 2698 src_pixel_alpha_en = is_alpha_support(top_win_pstate->fb->format->format); 2699 } 2700 2701 if (!bottom_win_pstate->fb) 2702 return; 2703 2704 alpha_config.src_premulti_en = premulti_en; 2705 alpha_config.dst_premulti_en = false; 2706 alpha_config.src_pixel_alpha_en = src_pixel_alpha_en; 2707 alpha_config.dst_pixel_alpha_en = true; /* alpha value need transfer to next mix */ 2708 alpha_config.src_glb_alpha_value = src_glb_alpha_val; 2709 alpha_config.dst_glb_alpha_value = dst_glb_alpha_val; 2710 vop2_parse_alpha(&alpha_config, &alpha); 2711 2712 alpha.src_color_ctrl.bits.src_dst_swap = swap; 2713 vop2_writel(vop2, src_color_ctrl_offset + offset, alpha.src_color_ctrl.val); 2714 vop2_writel(vop2, dst_color_ctrl_offset + offset, alpha.dst_color_ctrl.val); 2715 vop2_writel(vop2, src_alpha_ctrl_offset + offset, alpha.src_alpha_ctrl.val); 2716 vop2_writel(vop2, dst_alpha_ctrl_offset + offset, alpha.dst_alpha_ctrl.val); 2717 } 2718 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org