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charset=us-ascii Content-Disposition: inline In-Reply-To: <20260202023253.67552-1-supernitsuasnowpee@gmail.com> Hi James, 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/James/staging-sm750fb-make-g_fbmode-array-const/20260202-103616 base: staging/staging-testing patch link: https://lore.kernel.org/r/20260202023253.67552-1-supernitsuasnowpee%40gmail.com patch subject: [PATCH] staging: sm750fb: make g_fbmode array const config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20260202/202602021649.9bGhL8np-lkp@intel.com/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9b8addffa70cee5b2acc5454712d9cf78ce45710) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260202/202602021649.9bGhL8np-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/202602021649.9bGhL8np-lkp@intel.com/ All errors (new ones prefixed by >>): >> drivers/staging/sm750fb/sm750.c:795:19: error: cannot assign to variable 'g_fbmode' with const-qualified type 'const char *const[2]' 795 | g_fbmode[index] = g_def_fbmode; | ~~~~~~~~~~~~~~~ ^ drivers/staging/sm750fb/sm750.c:36:27: note: variable 'g_fbmode' declared const here 36 | static const char * const g_fbmode[] = {NULL, NULL}; | ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/staging/sm750fb/sm750.c:797:20: error: cannot assign to variable 'g_fbmode' with const-qualified type 'const char *const[2]' 797 | g_fbmode[index] = g_fbmode[0]; | ~~~~~~~~~~~~~~~ ^ drivers/staging/sm750fb/sm750.c:36:27: note: variable 'g_fbmode' declared const here 36 | static const char * const g_fbmode[] = {NULL, NULL}; | ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/staging/sm750fb/sm750.c:958:17: error: cannot assign to variable 'g_fbmode' with const-qualified type 'const char *const[2]' 958 | g_fbmode[0] = opt; | ~~~~~~~~~~~ ^ drivers/staging/sm750fb/sm750.c:36:27: note: variable 'g_fbmode' declared const here 36 | static const char * const g_fbmode[] = {NULL, NULL}; | ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/staging/sm750fb/sm750.c:962:17: error: cannot assign to variable 'g_fbmode' with const-qualified type 'const char *const[2]' 962 | g_fbmode[1] = opt; | ~~~~~~~~~~~ ^ drivers/staging/sm750fb/sm750.c:36:27: note: variable 'g_fbmode' declared const here 36 | static const char * const g_fbmode[] = {NULL, NULL}; | ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ 4 errors generated. vim +795 drivers/staging/sm750fb/sm750.c 81dee67e215b23 Sudip Mukherjee 2015-03-03 722 81dee67e215b23 Sudip Mukherjee 2015-03-03 723 static int lynxfb_set_fbinfo(struct fb_info *info, int index) 81dee67e215b23 Sudip Mukherjee 2015-03-03 724 { 81dee67e215b23 Sudip Mukherjee 2015-03-03 725 int i; 81dee67e215b23 Sudip Mukherjee 2015-03-03 726 struct lynxfb_par *par; e359b6a863e19f Mike Rapoport 2015-10-26 727 struct sm750_dev *sm750_dev; 81dee67e215b23 Sudip Mukherjee 2015-03-03 728 struct lynxfb_crtc *crtc; 81dee67e215b23 Sudip Mukherjee 2015-03-03 729 struct lynxfb_output *output; 81dee67e215b23 Sudip Mukherjee 2015-03-03 730 struct fb_var_screeninfo *var; 81dee67e215b23 Sudip Mukherjee 2015-03-03 731 struct fb_fix_screeninfo *fix; 81dee67e215b23 Sudip Mukherjee 2015-03-03 732 81dee67e215b23 Sudip Mukherjee 2015-03-03 733 const struct fb_videomode *pdb[] = { 81dee67e215b23 Sudip Mukherjee 2015-03-03 734 lynx750_ext, NULL, vesa_modes, 81dee67e215b23 Sudip Mukherjee 2015-03-03 735 }; 81dee67e215b23 Sudip Mukherjee 2015-03-03 736 int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE}; d5d66cfea2ca28 Kelsey Skunberg 2019-04-27 737 static const char * const mdb_desc[] = { 81dee67e215b23 Sudip Mukherjee 2015-03-03 738 "driver prepared modes", 81dee67e215b23 Sudip Mukherjee 2015-03-03 739 "kernel prepared default modedb", 81dee67e215b23 Sudip Mukherjee 2015-03-03 740 "kernel HELPERS prepared vesa_modes", 81dee67e215b23 Sudip Mukherjee 2015-03-03 741 }; 81dee67e215b23 Sudip Mukherjee 2015-03-03 742 8c475735085a7d Tim Wassink 2025-12-21 743 static const char *fix_id[2] = { 81dee67e215b23 Sudip Mukherjee 2015-03-03 744 "sm750_fb1", "sm750_fb2", 81dee67e215b23 Sudip Mukherjee 2015-03-03 745 }; 81dee67e215b23 Sudip Mukherjee 2015-03-03 746 81dee67e215b23 Sudip Mukherjee 2015-03-03 747 int ret, line_length; 81dee67e215b23 Sudip Mukherjee 2015-03-03 748 81dee67e215b23 Sudip Mukherjee 2015-03-03 749 ret = 0; 81dee67e215b23 Sudip Mukherjee 2015-03-03 750 par = (struct lynxfb_par *)info->par; e359b6a863e19f Mike Rapoport 2015-10-26 751 sm750_dev = par->dev; 81dee67e215b23 Sudip Mukherjee 2015-03-03 752 crtc = &par->crtc; 81dee67e215b23 Sudip Mukherjee 2015-03-03 753 output = &par->output; 81dee67e215b23 Sudip Mukherjee 2015-03-03 754 var = &info->var; 81dee67e215b23 Sudip Mukherjee 2015-03-03 755 fix = &info->fix; 81dee67e215b23 Sudip Mukherjee 2015-03-03 756 81dee67e215b23 Sudip Mukherjee 2015-03-03 757 /* set index */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 758 par->index = index; 81dee67e215b23 Sudip Mukherjee 2015-03-03 759 output->channel = &crtc->channel; 81dee67e215b23 Sudip Mukherjee 2015-03-03 760 sm750fb_set_drv(par); 81dee67e215b23 Sudip Mukherjee 2015-03-03 761 d11ac7cbcc266c Sudip Mukherjee 2015-08-07 762 /* d11ac7cbcc266c Sudip Mukherjee 2015-08-07 763 * set current cursor variable and proc pointer, d11ac7cbcc266c Sudip Mukherjee 2015-08-07 764 * must be set after crtc member initialized d11ac7cbcc266c Sudip Mukherjee 2015-08-07 765 */ fdc234d85210d9 Benjamin Philip 2021-07-28 766 crtc->cursor.offset = crtc->o_screen + crtc->vidmem_size - 1024; e359b6a863e19f Mike Rapoport 2015-10-26 767 crtc->cursor.mmio = sm750_dev->pvReg + e359b6a863e19f Mike Rapoport 2015-10-26 768 0x800f0 + (int)crtc->channel * 0x140; 81dee67e215b23 Sudip Mukherjee 2015-03-03 769 81dee67e215b23 Sudip Mukherjee 2015-03-03 770 pr_info("crtc->cursor.mmio = %p\n", crtc->cursor.mmio); cd33da26036ea5 Christopher Carbone 2022-08-23 771 crtc->cursor.max_h = 64; cd33da26036ea5 Christopher Carbone 2022-08-23 772 crtc->cursor.max_w = 64; 39f9137268ee3d Benjamin Philip 2021-07-26 773 crtc->cursor.size = crtc->cursor.max_h * crtc->cursor.max_w * 2 / 8; e359b6a863e19f Mike Rapoport 2015-10-26 774 crtc->cursor.vstart = sm750_dev->pvMem + crtc->cursor.offset; 81dee67e215b23 Sudip Mukherjee 2015-03-03 775 3de08a2d14ff8c Lorenzo Stoakes 2015-03-20 776 memset_io(crtc->cursor.vstart, 0, crtc->cursor.size); f7c8a046577e09 Thomas Zimmermann 2023-11-27 777 if (!g_hwcursor) 52d0744d751d8f Arnd Bergmann 2016-11-09 778 sm750_hw_cursor_disable(&crtc->cursor); 81dee67e215b23 Sudip Mukherjee 2015-03-03 779 81dee67e215b23 Sudip Mukherjee 2015-03-03 780 /* set info->fbops, must be set before fb_find_mode */ e359b6a863e19f Mike Rapoport 2015-10-26 781 if (!sm750_dev->accel_off) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 782 /* use 2d acceleration */ f7c8a046577e09 Thomas Zimmermann 2023-11-27 783 if (!g_hwcursor) f7c8a046577e09 Thomas Zimmermann 2023-11-27 784 info->fbops = &lynxfb_ops_accel; f7c8a046577e09 Thomas Zimmermann 2023-11-27 785 else f7c8a046577e09 Thomas Zimmermann 2023-11-27 786 info->fbops = &lynxfb_ops_accel_with_cursor; f7c8a046577e09 Thomas Zimmermann 2023-11-27 787 } else { f7c8a046577e09 Thomas Zimmermann 2023-11-27 788 if (!g_hwcursor) 81dee67e215b23 Sudip Mukherjee 2015-03-03 789 info->fbops = &lynxfb_ops; f7c8a046577e09 Thomas Zimmermann 2023-11-27 790 else f7c8a046577e09 Thomas Zimmermann 2023-11-27 791 info->fbops = &lynxfb_ops_with_cursor; f7c8a046577e09 Thomas Zimmermann 2023-11-27 792 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 793 81dee67e215b23 Sudip Mukherjee 2015-03-03 794 if (!g_fbmode[index]) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 @795 g_fbmode[index] = g_def_fbmode; 81dee67e215b23 Sudip Mukherjee 2015-03-03 796 if (index) 81dee67e215b23 Sudip Mukherjee 2015-03-03 797 g_fbmode[index] = g_fbmode[0]; 81dee67e215b23 Sudip Mukherjee 2015-03-03 798 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 799 81dee67e215b23 Sudip Mukherjee 2015-03-03 800 for (i = 0; i < 3; i++) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 801 ret = fb_find_mode(var, info, g_fbmode[index], 81dee67e215b23 Sudip Mukherjee 2015-03-03 802 pdb[i], cdb[i], NULL, 8); 81dee67e215b23 Sudip Mukherjee 2015-03-03 803 81dee67e215b23 Sudip Mukherjee 2015-03-03 804 if (ret == 1) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 805 pr_info("success! use specified mode:%s in %s\n", 81dee67e215b23 Sudip Mukherjee 2015-03-03 806 g_fbmode[index], 81dee67e215b23 Sudip Mukherjee 2015-03-03 807 mdb_desc[i]); 81dee67e215b23 Sudip Mukherjee 2015-03-03 808 break; 81dee67e215b23 Sudip Mukherjee 2015-03-03 809 } else if (ret == 2) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 810 pr_warn("use specified mode:%s in %s,with an ignored refresh rate\n", 81dee67e215b23 Sudip Mukherjee 2015-03-03 811 g_fbmode[index], 81dee67e215b23 Sudip Mukherjee 2015-03-03 812 mdb_desc[i]); 81dee67e215b23 Sudip Mukherjee 2015-03-03 813 break; 81dee67e215b23 Sudip Mukherjee 2015-03-03 814 } else if (ret == 3) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 815 pr_warn("wanna use default mode\n"); 4bd9503d0becdb Michel von Czettritz 2015-03-26 816 /*break;*/ 81dee67e215b23 Sudip Mukherjee 2015-03-03 817 } else if (ret == 4) { 81dee67e215b23 Sudip Mukherjee 2015-03-03 818 pr_warn("fall back to any valid mode\n"); 81dee67e215b23 Sudip Mukherjee 2015-03-03 819 } else { 3318bb5e945f70 Michel von Czettritz 2015-03-26 820 pr_warn("ret = %d,fb_find_mode failed,with %s\n", 3318bb5e945f70 Michel von Czettritz 2015-03-26 821 ret, 3318bb5e945f70 Michel von Czettritz 2015-03-26 822 mdb_desc[i]); 81dee67e215b23 Sudip Mukherjee 2015-03-03 823 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 824 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 825 81dee67e215b23 Sudip Mukherjee 2015-03-03 826 /* some member of info->var had been set by fb_find_mode */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 827 271dbae3c6a1da Prasant Jalan 2017-04-01 828 pr_info("Member of info->var is :\n" 271dbae3c6a1da Prasant Jalan 2017-04-01 829 "xres=%d\n" 271dbae3c6a1da Prasant Jalan 2017-04-01 830 "yres=%d\n" 271dbae3c6a1da Prasant Jalan 2017-04-01 831 "xres_virtual=%d\n" 271dbae3c6a1da Prasant Jalan 2017-04-01 832 "yres_virtual=%d\n" 271dbae3c6a1da Prasant Jalan 2017-04-01 833 "xoffset=%d\n" 271dbae3c6a1da Prasant Jalan 2017-04-01 834 "yoffset=%d\n" 271dbae3c6a1da Prasant Jalan 2017-04-01 835 "bits_per_pixel=%d\n" 271dbae3c6a1da Prasant Jalan 2017-04-01 836 " ...\n", 3318bb5e945f70 Michel von Czettritz 2015-03-26 837 var->xres, 3318bb5e945f70 Michel von Czettritz 2015-03-26 838 var->yres, 3318bb5e945f70 Michel von Czettritz 2015-03-26 839 var->xres_virtual, 3318bb5e945f70 Michel von Czettritz 2015-03-26 840 var->yres_virtual, 3318bb5e945f70 Michel von Czettritz 2015-03-26 841 var->xoffset, 3318bb5e945f70 Michel von Czettritz 2015-03-26 842 var->yoffset, 3318bb5e945f70 Michel von Czettritz 2015-03-26 843 var->bits_per_pixel); 81dee67e215b23 Sudip Mukherjee 2015-03-03 844 81dee67e215b23 Sudip Mukherjee 2015-03-03 845 /* set par */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 846 par->info = info; 81dee67e215b23 Sudip Mukherjee 2015-03-03 847 81dee67e215b23 Sudip Mukherjee 2015-03-03 848 /* set info */ e3a3f9f5123683 Mike Rapoport 2015-10-26 849 line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8), e3a3f9f5123683 Mike Rapoport 2015-10-26 850 crtc->line_pad); 81dee67e215b23 Sudip Mukherjee 2015-03-03 851 81dee67e215b23 Sudip Mukherjee 2015-03-03 852 info->pseudo_palette = &par->pseudo_palette[0]; cc59bde1c920ab Benjamin Philip 2021-07-28 853 info->screen_base = crtc->v_screen; 81dee67e215b23 Sudip Mukherjee 2015-03-03 854 pr_debug("screen_base vaddr = %p\n", info->screen_base); 81dee67e215b23 Sudip Mukherjee 2015-03-03 855 info->screen_size = line_length * var->yres_virtual; 81dee67e215b23 Sudip Mukherjee 2015-03-03 856 81dee67e215b23 Sudip Mukherjee 2015-03-03 857 /* set info->fix */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 858 fix->type = FB_TYPE_PACKED_PIXELS; 81dee67e215b23 Sudip Mukherjee 2015-03-03 859 fix->type_aux = 0; 81dee67e215b23 Sudip Mukherjee 2015-03-03 860 fix->xpanstep = crtc->xpanstep; 81dee67e215b23 Sudip Mukherjee 2015-03-03 861 fix->ypanstep = crtc->ypanstep; 81dee67e215b23 Sudip Mukherjee 2015-03-03 862 fix->ywrapstep = crtc->ywrapstep; 81dee67e215b23 Sudip Mukherjee 2015-03-03 863 fix->accel = FB_ACCEL_SMI; 81dee67e215b23 Sudip Mukherjee 2015-03-03 864 8c475735085a7d Tim Wassink 2025-12-21 865 strscpy(fix->id, fix_id[index], sizeof(fix->id)); 81dee67e215b23 Sudip Mukherjee 2015-03-03 866 fdc234d85210d9 Benjamin Philip 2021-07-28 867 fix->smem_start = crtc->o_screen + sm750_dev->vidmem_start; 81dee67e215b23 Sudip Mukherjee 2015-03-03 868 pr_info("fix->smem_start = %lx\n", fix->smem_start); d11ac7cbcc266c Sudip Mukherjee 2015-08-07 869 /* d11ac7cbcc266c Sudip Mukherjee 2015-08-07 870 * according to mmap experiment from user space application, 81dee67e215b23 Sudip Mukherjee 2015-03-03 871 * fix->mmio_len should not larger than virtual size 81dee67e215b23 Sudip Mukherjee 2015-03-03 872 * (xres_virtual x yres_virtual x ByPP) 81dee67e215b23 Sudip Mukherjee 2015-03-03 873 * Below line maybe buggy when user mmap fb dev node and write 81dee67e215b23 Sudip Mukherjee 2015-03-03 874 * data into the bound over virtual size d11ac7cbcc266c Sudip Mukherjee 2015-08-07 875 */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 876 fix->smem_len = crtc->vidmem_size; 81dee67e215b23 Sudip Mukherjee 2015-03-03 877 pr_info("fix->smem_len = %x\n", fix->smem_len); 81dee67e215b23 Sudip Mukherjee 2015-03-03 878 info->screen_size = fix->smem_len; 81dee67e215b23 Sudip Mukherjee 2015-03-03 879 fix->line_length = line_length; e359b6a863e19f Mike Rapoport 2015-10-26 880 fix->mmio_start = sm750_dev->vidreg_start; 81dee67e215b23 Sudip Mukherjee 2015-03-03 881 pr_info("fix->mmio_start = %lx\n", fix->mmio_start); e359b6a863e19f Mike Rapoport 2015-10-26 882 fix->mmio_len = sm750_dev->vidreg_size; 81dee67e215b23 Sudip Mukherjee 2015-03-03 883 pr_info("fix->mmio_len = %x\n", fix->mmio_len); b610e1193a917f Matej Dujava 2020-04-30 884 b610e1193a917f Matej Dujava 2020-04-30 885 lynxfb_set_visual_mode(info); 81dee67e215b23 Sudip Mukherjee 2015-03-03 886 81dee67e215b23 Sudip Mukherjee 2015-03-03 887 /* set var */ 81dee67e215b23 Sudip Mukherjee 2015-03-03 888 var->activate = FB_ACTIVATE_NOW; 81dee67e215b23 Sudip Mukherjee 2015-03-03 889 var->accel_flags = 0; 81dee67e215b23 Sudip Mukherjee 2015-03-03 890 var->vmode = FB_VMODE_NONINTERLACED; 81dee67e215b23 Sudip Mukherjee 2015-03-03 891 81dee67e215b23 Sudip Mukherjee 2015-03-03 892 pr_debug("#1 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n", 81dee67e215b23 Sudip Mukherjee 2015-03-03 893 info->cmap.start, info->cmap.len, 81dee67e215b23 Sudip Mukherjee 2015-03-03 894 info->cmap.red, info->cmap.green, info->cmap.blue, 81dee67e215b23 Sudip Mukherjee 2015-03-03 895 info->cmap.transp); 81dee67e215b23 Sudip Mukherjee 2015-03-03 896 61c507cf652da1 Michel von Czettritz 2015-03-26 897 ret = fb_alloc_cmap(&info->cmap, 256, 0); 61c507cf652da1 Michel von Czettritz 2015-03-26 898 if (ret < 0) { 008272072d61a8 Masanari Iida 2015-05-28 899 pr_err("Could not allocate memory for cmap.\n"); 81dee67e215b23 Sudip Mukherjee 2015-03-03 900 goto exit; 81dee67e215b23 Sudip Mukherjee 2015-03-03 901 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 902 81dee67e215b23 Sudip Mukherjee 2015-03-03 903 pr_debug("#2 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n", 81dee67e215b23 Sudip Mukherjee 2015-03-03 904 info->cmap.start, info->cmap.len, 81dee67e215b23 Sudip Mukherjee 2015-03-03 905 info->cmap.red, info->cmap.green, info->cmap.blue, 81dee67e215b23 Sudip Mukherjee 2015-03-03 906 info->cmap.transp); 81dee67e215b23 Sudip Mukherjee 2015-03-03 907 81dee67e215b23 Sudip Mukherjee 2015-03-03 908 exit: 81dee67e215b23 Sudip Mukherjee 2015-03-03 909 lynxfb_ops_check_var(var, info); 81dee67e215b23 Sudip Mukherjee 2015-03-03 910 return ret; 81dee67e215b23 Sudip Mukherjee 2015-03-03 911 } 81dee67e215b23 Sudip Mukherjee 2015-03-03 912 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki