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charset=us-ascii Content-Disposition: inline In-Reply-To: <20260625071348.132880-1-suryasaimadhu369@gmail.com> Hi suryasaimadhu, kernel test robot noticed the following build errors: [auto build test ERROR on staging/staging-testing] url: https://github.com/intel-lab-lkp/linux/commits/suryasaimadhu/staging-sm750fb-fix-const-pointer-declaration/20260625-151537 base: staging/staging-testing patch link: https://lore.kernel.org/r/20260625071348.132880-1-suryasaimadhu369%40gmail.com patch subject: [PATCH] staging: sm750fb: fix const pointer declaration config: i386-buildonly-randconfig-001-20260626 (https://download.01.org/0day-ci/archive/20260626/202606260825.72C9EkKG-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260626/202606260825.72C9EkKG-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202606260825.72C9EkKG-lkp@intel.com/ All errors (new ones prefixed by >>): drivers/staging/sm750fb/sm750.c: In function 'lynxfb_set_fbinfo': >> drivers/staging/sm750fb/sm750.c:773:33: error: assignment of read-only location 'g_fbmode[index]' 773 | g_fbmode[index] = g_def_fbmode; | ^ drivers/staging/sm750fb/sm750.c:775:41: error: assignment of read-only location 'g_fbmode[index]' 775 | g_fbmode[index] = g_fbmode[0]; | ^ drivers/staging/sm750fb/sm750.c: In function 'sm750fb_setup': >> drivers/staging/sm750fb/sm750.c:884:45: error: assignment of read-only location 'g_fbmode[0]' 884 | g_fbmode[0] = opt; | ^ drivers/staging/sm750fb/sm750.c:888:45: error: assignment of read-only location 'g_fbmode[1]' 888 | g_fbmode[1] = opt; | ^ vim +773 drivers/staging/sm750fb/sm750.c 81dee67e215b23 Sudip Mukherjee 2015-03-03 707 81dee67e215b23 Sudip Mukherjee 2015-03-03 708 static int lynxfb_set_fbinfo(struct fb_info *info, int index) 81dee67e215b23 Sudip Mukherjee 2015-03-03 709 { 81dee67e215b23 Sudip Mukherjee 2015-03-03 710 int i; 81dee67e215b23 Sudip Mukherjee 2015-03-03 711 struct lynxfb_par *par; e359b6a863e19f Mike Rapoport 2015-10-26 712 struct sm750_dev *sm750_dev; 81dee67e215b23 Sudip Mukherjee 2015-03-03 713 struct lynxfb_crtc *crtc; 81dee67e215b23 Sudip Mukherjee 2015-03-03 714 struct lynxfb_output *output; 81dee67e215b23 Sudip Mukherjee 2015-03-03 715 struct fb_var_screeninfo *var; 81dee67e215b23 Sudip Mukherjee 2015-03-03 716 struct fb_fix_screeninfo *fix; 81dee67e215b23 Sudip Mukherjee 2015-03-03 717 81dee67e215b23 Sudip Mukherjee 2015-03-03 718 const struct fb_videomode *pdb[] = { 81dee67e215b23 Sudip Mukherjee 2015-03-03 719 lynx750_ext, NULL, vesa_modes, 81dee67e215b23 Sudip Mukherjee 2015-03-03 720 }; 81dee67e215b23 Sudip Mukherjee 2015-03-03 721 int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE}; d0856045f0e9fc Hungyu Lin 2026-04-01 722 static const char * const fix_id[2] = { 81dee67e215b23 Sudip Mukherjee 2015-03-03 723 "sm750_fb1", "sm750_fb2", 81dee67e215b23 Sudip Mukherjee 2015-03-03 724 }; 81dee67e215b23 Sudip Mukherjee 2015-03-03 725 81dee67e215b23 Sudip Mukherjee 2015-03-03 726 int ret, line_length; 81dee67e215b23 Sudip Mukherjee 2015-03-03 727 81dee67e215b23 Sudip Mukherjee 2015-03-03 728 ret = 0; 81dee67e215b23 Sudip Mukherjee 2015-03-03 729 par = (struct lynxfb_par *)info->par; e359b6a863e19f Mike Rapoport 2015-10-26 730 sm750_dev = par->dev; 81dee67e215b23 Sudip Mukherjee 2015-03-03 731 crtc = &par->crtc; 81dee67e215b23 Sudip Mukherjee 2015-03-03 732 output = &par->output; 81dee67e215b23 Sudip Mukherjee 2015-03-03 733 var = &info->var; 81dee67e215b23 Sudip Mukherjee 2015-03-03 734 fix = &info->fix; 81dee67e215b23 Sudip Mukherjee 2015-03-03 735 81dee67e215b23 Sudip Mukherjee 2015-03-03 736 /* set index */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 737 par->index = index; 81dee67e215b23 Sudip Mukherjee 2015-03-03 738 output->channel = &crtc->channel; 81dee67e215b23 Sudip Mukherjee 2015-03-03 739 sm750fb_set_drv(par); 81dee67e215b23 Sudip Mukherjee 2015-03-03 740 d11ac7cbcc266c Sudip Mukherjee 2015-08-07 741 /* d11ac7cbcc266c Sudip Mukherjee 2015-08-07 742 * set current cursor variable and proc pointer, d11ac7cbcc266c Sudip Mukherjee 2015-08-07 743 * must be set after crtc member initialized d11ac7cbcc266c Sudip Mukherjee 2015-08-07 744 */ fdc234d85210d9 Benjamin Philip 2021-07-28 745 crtc->cursor.offset = crtc->o_screen + crtc->vidmem_size - 1024; e359b6a863e19f Mike Rapoport 2015-10-26 746 crtc->cursor.mmio = sm750_dev->pvReg + e359b6a863e19f Mike Rapoport 2015-10-26 747 0x800f0 + (int)crtc->channel * 0x140; 81dee67e215b23 Sudip Mukherjee 2015-03-03 748 cd33da26036ea5 Christopher Carbone 2022-08-23 749 crtc->cursor.max_h = 64; cd33da26036ea5 Christopher Carbone 2022-08-23 750 crtc->cursor.max_w = 64; 39f9137268ee3d Benjamin Philip 2021-07-26 751 crtc->cursor.size = crtc->cursor.max_h * crtc->cursor.max_w * 2 / 8; f50b4602fea62f Jennifer Guo 2026-05-09 752 crtc->cursor.vstart = sm750_dev->vmem + crtc->cursor.offset; 81dee67e215b23 Sudip Mukherjee 2015-03-03 753 3de08a2d14ff8c Lorenzo Stoakes 2015-03-20 754 memset_io(crtc->cursor.vstart, 0, crtc->cursor.size); f7c8a046577e09 Thomas Zimmermann 2023-11-27 755 if (!g_hwcursor) 52d0744d751d8f Arnd Bergmann 2016-11-09 756 sm750_hw_cursor_disable(&crtc->cursor); 81dee67e215b23 Sudip Mukherjee 2015-03-03 757 81dee67e215b23 Sudip Mukherjee 2015-03-03 758 /* set info->fbops, must be set before fb_find_mode */ e359b6a863e19f Mike Rapoport 2015-10-26 759 if (!sm750_dev->accel_off) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 760 /* use 2d acceleration */ f7c8a046577e09 Thomas Zimmermann 2023-11-27 761 if (!g_hwcursor) f7c8a046577e09 Thomas Zimmermann 2023-11-27 762 info->fbops = &lynxfb_ops_accel; f7c8a046577e09 Thomas Zimmermann 2023-11-27 763 else f7c8a046577e09 Thomas Zimmermann 2023-11-27 764 info->fbops = &lynxfb_ops_accel_with_cursor; f7c8a046577e09 Thomas Zimmermann 2023-11-27 765 } else { f7c8a046577e09 Thomas Zimmermann 2023-11-27 766 if (!g_hwcursor) 81dee67e215b23 Sudip Mukherjee 2015-03-03 767 info->fbops = &lynxfb_ops; f7c8a046577e09 Thomas Zimmermann 2023-11-27 768 else f7c8a046577e09 Thomas Zimmermann 2023-11-27 769 info->fbops = &lynxfb_ops_with_cursor; f7c8a046577e09 Thomas Zimmermann 2023-11-27 770 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 771 81dee67e215b23 Sudip Mukherjee 2015-03-03 772 if (!g_fbmode[index]) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 @773 g_fbmode[index] = g_def_fbmode; 81dee67e215b23 Sudip Mukherjee 2015-03-03 774 if (index) 81dee67e215b23 Sudip Mukherjee 2015-03-03 775 g_fbmode[index] = g_fbmode[0]; 81dee67e215b23 Sudip Mukherjee 2015-03-03 776 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 777 81dee67e215b23 Sudip Mukherjee 2015-03-03 778 for (i = 0; i < 3; i++) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 779 ret = fb_find_mode(var, info, g_fbmode[index], 81dee67e215b23 Sudip Mukherjee 2015-03-03 780 pdb[i], cdb[i], NULL, 8); 81dee67e215b23 Sudip Mukherjee 2015-03-03 781 db7fb3588ab492 Artem Lytkin 2026-02-23 782 if (ret == 1 || ret == 2) 81dee67e215b23 Sudip Mukherjee 2015-03-03 783 break; 81dee67e215b23 Sudip Mukherjee 2015-03-03 784 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 785 81dee67e215b23 Sudip Mukherjee 2015-03-03 786 /* set par */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 787 par->info = info; 81dee67e215b23 Sudip Mukherjee 2015-03-03 788 81dee67e215b23 Sudip Mukherjee 2015-03-03 789 /* set info */ e3a3f9f5123683 Mike Rapoport 2015-10-26 790 line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8), e3a3f9f5123683 Mike Rapoport 2015-10-26 791 crtc->line_pad); 81dee67e215b23 Sudip Mukherjee 2015-03-03 792 81dee67e215b23 Sudip Mukherjee 2015-03-03 793 info->pseudo_palette = &par->pseudo_palette[0]; cc59bde1c920ab Benjamin Philip 2021-07-28 794 info->screen_base = crtc->v_screen; 81dee67e215b23 Sudip Mukherjee 2015-03-03 795 info->screen_size = line_length * var->yres_virtual; 81dee67e215b23 Sudip Mukherjee 2015-03-03 796 81dee67e215b23 Sudip Mukherjee 2015-03-03 797 /* set info->fix */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 798 fix->type = FB_TYPE_PACKED_PIXELS; 81dee67e215b23 Sudip Mukherjee 2015-03-03 799 fix->type_aux = 0; 81dee67e215b23 Sudip Mukherjee 2015-03-03 800 fix->xpanstep = crtc->xpanstep; 81dee67e215b23 Sudip Mukherjee 2015-03-03 801 fix->ypanstep = crtc->ypanstep; 81dee67e215b23 Sudip Mukherjee 2015-03-03 802 fix->ywrapstep = crtc->ywrapstep; 81dee67e215b23 Sudip Mukherjee 2015-03-03 803 fix->accel = FB_ACCEL_SMI; 81dee67e215b23 Sudip Mukherjee 2015-03-03 804 8c475735085a7d Tim Wassink 2025-12-21 805 strscpy(fix->id, fix_id[index], sizeof(fix->id)); 81dee67e215b23 Sudip Mukherjee 2015-03-03 806 fdc234d85210d9 Benjamin Philip 2021-07-28 807 fix->smem_start = crtc->o_screen + sm750_dev->vidmem_start; d11ac7cbcc266c Sudip Mukherjee 2015-08-07 808 /* d11ac7cbcc266c Sudip Mukherjee 2015-08-07 809 * according to mmap experiment from user space application, 81dee67e215b23 Sudip Mukherjee 2015-03-03 810 * fix->mmio_len should not larger than virtual size 81dee67e215b23 Sudip Mukherjee 2015-03-03 811 * (xres_virtual x yres_virtual x ByPP) 81dee67e215b23 Sudip Mukherjee 2015-03-03 812 * Below line maybe buggy when user mmap fb dev node and write 81dee67e215b23 Sudip Mukherjee 2015-03-03 813 * data into the bound over virtual size d11ac7cbcc266c Sudip Mukherjee 2015-08-07 814 */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 815 fix->smem_len = crtc->vidmem_size; 81dee67e215b23 Sudip Mukherjee 2015-03-03 816 info->screen_size = fix->smem_len; 81dee67e215b23 Sudip Mukherjee 2015-03-03 817 fix->line_length = line_length; e359b6a863e19f Mike Rapoport 2015-10-26 818 fix->mmio_start = sm750_dev->vidreg_start; e359b6a863e19f Mike Rapoport 2015-10-26 819 fix->mmio_len = sm750_dev->vidreg_size; b610e1193a917f Matej Dujava 2020-04-30 820 b610e1193a917f Matej Dujava 2020-04-30 821 lynxfb_set_visual_mode(info); 81dee67e215b23 Sudip Mukherjee 2015-03-03 822 81dee67e215b23 Sudip Mukherjee 2015-03-03 823 /* set var */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 824 var->activate = FB_ACTIVATE_NOW; 81dee67e215b23 Sudip Mukherjee 2015-03-03 825 var->accel_flags = 0; 81dee67e215b23 Sudip Mukherjee 2015-03-03 826 var->vmode = FB_VMODE_NONINTERLACED; 81dee67e215b23 Sudip Mukherjee 2015-03-03 827 61c507cf652da1 Michel von Czettritz 2015-03-26 828 ret = fb_alloc_cmap(&info->cmap, 256, 0); 61c507cf652da1 Michel von Czettritz 2015-03-26 829 if (ret < 0) { fbab250eb51d6d Artem Lytkin 2026-02-07 830 dev_err(info->device, "Could not allocate memory for cmap.\n"); 81dee67e215b23 Sudip Mukherjee 2015-03-03 831 goto exit; 81dee67e215b23 Sudip Mukherjee 2015-03-03 832 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 833 81dee67e215b23 Sudip Mukherjee 2015-03-03 834 exit: 81dee67e215b23 Sudip Mukherjee 2015-03-03 835 lynxfb_ops_check_var(var, info); 81dee67e215b23 Sudip Mukherjee 2015-03-03 836 return ret; 81dee67e215b23 Sudip Mukherjee 2015-03-03 837 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 838 81dee67e215b23 Sudip Mukherjee 2015-03-03 839 /* chip specific g_option configuration routine */ 700591a9adc8b1 Mike Rapoport 2015-10-26 840 static void sm750fb_setup(struct sm750_dev *sm750_dev, char *src) 81dee67e215b23 Sudip Mukherjee 2015-03-03 841 { 81dee67e215b23 Sudip Mukherjee 2015-03-03 842 char *opt; 81dee67e215b23 Sudip Mukherjee 2015-03-03 843 int swap; 81dee67e215b23 Sudip Mukherjee 2015-03-03 844 81dee67e215b23 Sudip Mukherjee 2015-03-03 845 swap = 0; 81dee67e215b23 Sudip Mukherjee 2015-03-03 846 cc34db609ff98c Madhumitha Sundar 2026-01-27 847 sm750_dev->init_parm.chip_clk = 0; cc34db609ff98c Madhumitha Sundar 2026-01-27 848 sm750_dev->init_parm.mem_clk = 0; cc34db609ff98c Madhumitha Sundar 2026-01-27 849 sm750_dev->init_parm.master_clk = 0; 45a337c12624fc Jennifer Guo 2026-05-09 850 sm750_dev->init_parm.power_mode = 0; cc34db609ff98c Madhumitha Sundar 2026-01-27 851 sm750_dev->init_parm.setAllEngOff = 0; 45a337c12624fc Jennifer Guo 2026-05-09 852 sm750_dev->init_parm.reset_memory = 1; 81dee67e215b23 Sudip Mukherjee 2015-03-03 853 81dee67e215b23 Sudip Mukherjee 2015-03-03 854 /* defaultly turn g_hwcursor on for both view */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 855 g_hwcursor = 3; 81dee67e215b23 Sudip Mukherjee 2015-03-03 856 81dee67e215b23 Sudip Mukherjee 2015-03-03 857 if (!src || !*src) { c56de0967a658c Elise Lennion 2016-10-31 858 dev_warn(&sm750_dev->pdev->dev, "no specific g_option.\n"); 81dee67e215b23 Sudip Mukherjee 2015-03-03 859 goto NO_PARAM; 81dee67e215b23 Sudip Mukherjee 2015-03-03 860 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 861 0fa96e39279988 Sudip Mukherjee 2015-03-10 862 while ((opt = strsep(&src, ":")) != NULL && *opt != 0) { c56de0967a658c Elise Lennion 2016-10-31 863 dev_info(&sm750_dev->pdev->dev, "opt=%s\n", opt); c56de0967a658c Elise Lennion 2016-10-31 864 dev_info(&sm750_dev->pdev->dev, "src=%s\n", src); 81dee67e215b23 Sudip Mukherjee 2015-03-03 865 144634a6b42146 Katie Dunne 2017-02-19 866 if (!strncmp(opt, "swap", strlen("swap"))) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 867 swap = 1; 144634a6b42146 Katie Dunne 2017-02-19 868 } else if (!strncmp(opt, "nocrt", strlen("nocrt"))) { 1757d106a9ce8c Mike Rapoport 2015-10-26 869 sm750_dev->nocrt = 1; 144634a6b42146 Katie Dunne 2017-02-19 870 } else if (!strncmp(opt, "36bit", strlen("36bit"))) { 94c938a0c15863 Shubham Chakraborty 2026-04-07 871 sm750_dev->pnltype = SM750_DOUBLE_TFT; 144634a6b42146 Katie Dunne 2017-02-19 872 } else if (!strncmp(opt, "18bit", strlen("18bit"))) { 94c938a0c15863 Shubham Chakraborty 2026-04-07 873 sm750_dev->pnltype = SM750_DUAL_TFT; 144634a6b42146 Katie Dunne 2017-02-19 874 } else if (!strncmp(opt, "24bit", strlen("24bit"))) { 94c938a0c15863 Shubham Chakraborty 2026-04-07 875 sm750_dev->pnltype = SM750_24TFT; 144634a6b42146 Katie Dunne 2017-02-19 876 } else if (!strncmp(opt, "nohwc0", strlen("nohwc0"))) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 877 g_hwcursor &= ~0x1; 144634a6b42146 Katie Dunne 2017-02-19 878 } else if (!strncmp(opt, "nohwc1", strlen("nohwc1"))) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 879 g_hwcursor &= ~0x2; 144634a6b42146 Katie Dunne 2017-02-19 880 } else if (!strncmp(opt, "nohwc", strlen("nohwc"))) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 881 g_hwcursor = 0; 144634a6b42146 Katie Dunne 2017-02-19 882 } else { 81dee67e215b23 Sudip Mukherjee 2015-03-03 883 if (!g_fbmode[0]) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 @884 g_fbmode[0] = opt; cee9ba1c30d051 Abdul Rauf 2017-01-08 885 dev_info(&sm750_dev->pdev->dev, cee9ba1c30d051 Abdul Rauf 2017-01-08 886 "find fbmode0 : %s\n", g_fbmode[0]); 81dee67e215b23 Sudip Mukherjee 2015-03-03 887 } else if (!g_fbmode[1]) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 888 g_fbmode[1] = opt; cee9ba1c30d051 Abdul Rauf 2017-01-08 889 dev_info(&sm750_dev->pdev->dev, cee9ba1c30d051 Abdul Rauf 2017-01-08 890 "find fbmode1 : %s\n", g_fbmode[1]); 81dee67e215b23 Sudip Mukherjee 2015-03-03 891 } else { c56de0967a658c Elise Lennion 2016-10-31 892 dev_warn(&sm750_dev->pdev->dev, "How many view you wann set?\n"); 81dee67e215b23 Sudip Mukherjee 2015-03-03 893 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 894 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 895 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 896 81dee67e215b23 Sudip Mukherjee 2015-03-03 897 NO_PARAM: e359b6a863e19f Mike Rapoport 2015-10-26 898 if (sm750_dev->revid != SM750LE_REVISION_ID) { a3f92cc94c6126 Mike Rapoport 2016-01-17 899 if (sm750_dev->fb_count > 1) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 900 if (swap) 1757d106a9ce8c Mike Rapoport 2015-10-26 901 sm750_dev->dataflow = sm750_dual_swap; 81dee67e215b23 Sudip Mukherjee 2015-03-03 902 else 1757d106a9ce8c Mike Rapoport 2015-10-26 903 sm750_dev->dataflow = sm750_dual_normal; 81dee67e215b23 Sudip Mukherjee 2015-03-03 904 } else { 81dee67e215b23 Sudip Mukherjee 2015-03-03 905 if (swap) 1757d106a9ce8c Mike Rapoport 2015-10-26 906 sm750_dev->dataflow = sm750_simul_sec; 81dee67e215b23 Sudip Mukherjee 2015-03-03 907 else 1757d106a9ce8c Mike Rapoport 2015-10-26 908 sm750_dev->dataflow = sm750_simul_pri; 81dee67e215b23 Sudip Mukherjee 2015-03-03 909 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 910 } else { 81dee67e215b23 Sudip Mukherjee 2015-03-03 911 /* SM750LE only have one crt channel */ 1757d106a9ce8c Mike Rapoport 2015-10-26 912 sm750_dev->dataflow = sm750_simul_sec; 81dee67e215b23 Sudip Mukherjee 2015-03-03 913 /* sm750le do not have complex attributes */ 1757d106a9ce8c Mike Rapoport 2015-10-26 914 sm750_dev->nocrt = 0; 81dee67e215b23 Sudip Mukherjee 2015-03-03 915 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 916 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 917 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki