tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 90c9e950c0def5c354b4a6154a2ddda3e5f214ac commit: a3f781a9d6114c1d1e01defb7aa234dec45d2a5f fbcon: Add option to enable legacy hardware acceleration date: 4 days ago config: i386-randconfig-a003 (https://download.01.org/0day-ci/archive/20220206/202202061640.zSayOYxO-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout a3f781a9d6114c1d1e01defb7aa234dec45d2a5f # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/video/fbdev/core/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/video/fbdev/core/fbcon.c: In function 'fbcon_init': 1028 | int cap, ret; | ^~~ vim +/cap +1028 drivers/video/fbdev/core/fbcon.c ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1019 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1020 static void fbcon_init(struct vc_data *vc, int init) ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1021 { 1f4ed2fb01f80f drivers/video/fbdev/core/fbcon.c Daniel Vetter 2019-05-28 1022 struct fb_info *info; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1023 struct fbcon_ops *ops; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1024 struct vc_data **default_mode = vc->vc_display_fg; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1025 struct vc_data *svc = *default_mode; 50233393f0cf9b drivers/video/fbdev/core/fbcon.c Daniel Vetter 2019-05-28 1026 struct fbcon_display *t, *p = &fb_display[vc->vc_num]; a1ac250a82a5e9 drivers/video/fbdev/core/fbcon.c Peilin Ye 2020-11-12 1027 int logo = 1, new_rows, new_cols, rows, cols; 87ab9f6b741734 drivers/video/fbdev/core/fbcon.c Helge Deller 2022-02-02 @1028 int cap, ret; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1029 1f4ed2fb01f80f drivers/video/fbdev/core/fbcon.c Daniel Vetter 2019-05-28 1030 if (WARN_ON(info_idx == -1)) ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1031 return; 306958e8e8d150 drivers/video/console/fbcon.c Adrian Bunk 2005-05-01 1032 1f4ed2fb01f80f drivers/video/fbdev/core/fbcon.c Daniel Vetter 2019-05-28 1033 if (con2fb_map[vc->vc_num] == -1) 1f4ed2fb01f80f drivers/video/fbdev/core/fbcon.c Daniel Vetter 2019-05-28 1034 con2fb_map[vc->vc_num] = info_idx; 1f4ed2fb01f80f drivers/video/fbdev/core/fbcon.c Daniel Vetter 2019-05-28 1035 1f4ed2fb01f80f drivers/video/fbdev/core/fbcon.c Daniel Vetter 2019-05-28 1036 info = registered_fb[con2fb_map[vc->vc_num]]; 87ab9f6b741734 drivers/video/fbdev/core/fbcon.c Helge Deller 2022-02-02 1037 cap = info->flags; 306958e8e8d150 drivers/video/console/fbcon.c Adrian Bunk 2005-05-01 1038 3c5a1b111373e6 drivers/video/fbdev/core/fbcon.c Andreas Schwab 2019-05-06 1039 if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET) 10993504d64735 drivers/video/fbdev/core/fbcon.c Prarit Bhargava 2019-02-08 1040 logo_shown = FBCON_LOGO_DONTSHOW; 10993504d64735 drivers/video/fbdev/core/fbcon.c Prarit Bhargava 2019-02-08 1041 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1042 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1043 (info->fix.type == FB_TYPE_TEXT)) ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1044 logo = 0; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1045 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1046 if (var_to_display(p, &info->var, info)) ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1047 return; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1048 d1baa4ffa677bf drivers/video/console/fbcon.c Antonino A. Daplas 2007-07-17 1049 if (!info->fbcon_par) d1baa4ffa677bf drivers/video/console/fbcon.c Antonino A. Daplas 2007-07-17 1050 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1); d1baa4ffa677bf drivers/video/console/fbcon.c Antonino A. Daplas 2007-07-17 1051 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1052 /* If we are not the first console on this ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1053 fb, copy the font from that console */ e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1054 t = &fb_display[fg_console]; e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1055 if (!p->fontdata) { e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1056 if (t->fontdata) { e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1057 struct vc_data *fvc = vc_cons[fg_console].d; e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1058 e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1059 vc->vc_font.data = (void *)(p->fontdata = e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1060 fvc->vc_font.data); e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1061 vc->vc_font.width = fvc->vc_font.width; e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1062 vc->vc_font.height = fvc->vc_font.height; a1ac250a82a5e9 drivers/video/fbdev/core/fbcon.c Peilin Ye 2020-11-12 1063 vc->vc_font.charcount = fvc->vc_font.charcount; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1064 p->userfont = t->userfont; e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1065 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1066 if (p->userfont) ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1067 REFCOUNT(p->fontdata)++; e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1068 } else { e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1069 const struct font_desc *font = NULL; e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1070 e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1071 if (!fontname[0] || !(font = find_font(fontname))) e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1072 font = get_default_font(info->var.xres, 2d2699d9849248 drivers/video/console/fbcon.c Antonino A. Daplas 2007-05-08 1073 info->var.yres, 2d2699d9849248 drivers/video/console/fbcon.c Antonino A. Daplas 2007-05-08 1074 info->pixmap.blit_x, 2d2699d9849248 drivers/video/console/fbcon.c Antonino A. Daplas 2007-05-08 1075 info->pixmap.blit_y); e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1076 vc->vc_font.width = font->width; e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1077 vc->vc_font.height = font->height; e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1078 vc->vc_font.data = (void *)(p->fontdata = font->data); a1ac250a82a5e9 drivers/video/fbdev/core/fbcon.c Peilin Ye 2020-11-12 1079 vc->vc_font.charcount = font->charcount; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1080 } e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1081 } e614b18dcedb24 drivers/video/console/fbcon.c Antonino A. Daplas 2006-06-26 1082 b8c909454f046b drivers/video/console/fbcon.c Antonino A. Daplas 2005-09-09 1083 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1); ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1084 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; a1ac250a82a5e9 drivers/video/fbdev/core/fbcon.c Peilin Ye 2020-11-12 1085 if (vc->vc_font.charcount == 256) { ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1086 vc->vc_hi_font_mask = 0; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1087 } else { ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1088 vc->vc_hi_font_mask = 0x100; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1089 if (vc->vc_can_do_color) ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1090 vc->vc_complement_mask <<= 1; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1091 } ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1092 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1093 if (!*svc->vc_uni_pagedir_loc) ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1094 con_set_default_unimap(svc); ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1095 if (!*vc->vc_uni_pagedir_loc) ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1096 con_copy_unimap(vc, svc); ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1097 e4fc27618b7523 drivers/video/console/fbcon.c Antonino A. Daplas 2005-11-08 1098 ops = info->fbcon_par; f235f664a8afab drivers/video/console/fbcon.c Scot Doyle 2015-10-09 1099 ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms); c9e6a36492504e drivers/video/fbdev/core/fbcon.c Hans de Goede 2017-11-25 1100 2428e59b530928 drivers/video/console/fbcon.c Marcin Slusarz 2008-02-06 1101 p->con_rotate = initial_rotation; c9e6a36492504e drivers/video/fbdev/core/fbcon.c Hans de Goede 2017-11-25 1102 if (p->con_rotate == -1) c9e6a36492504e drivers/video/fbdev/core/fbcon.c Hans de Goede 2017-11-25 1103 p->con_rotate = info->fbcon_rotate_hint; c9e6a36492504e drivers/video/fbdev/core/fbcon.c Hans de Goede 2017-11-25 1104 if (p->con_rotate == -1) f2f4946b0adfd6 drivers/video/fbdev/core/fbcon.c Hans de Goede 2017-11-25 1105 p->con_rotate = FB_ROTATE_UR; c9e6a36492504e drivers/video/fbdev/core/fbcon.c Hans de Goede 2017-11-25 1106 b73deed32d0874 drivers/video/console/fbcon.c Antonino A. Daplas 2006-01-09 1107 set_blitting_type(vc, info); e4fc27618b7523 drivers/video/console/fbcon.c Antonino A. Daplas 2005-11-08 1108 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1109 cols = vc->vc_cols; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1110 rows = vc->vc_rows; e4fc27618b7523 drivers/video/console/fbcon.c Antonino A. Daplas 2005-11-08 1111 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres); e4fc27618b7523 drivers/video/console/fbcon.c Antonino A. Daplas 2005-11-08 1112 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres); e4fc27618b7523 drivers/video/console/fbcon.c Antonino A. Daplas 2005-11-08 1113 new_cols /= vc->vc_font.width; e4fc27618b7523 drivers/video/console/fbcon.c Antonino A. Daplas 2005-11-08 1114 new_rows /= vc->vc_font.height; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1115 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1116 /* ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1117 * We must always set the mode. The mode of the previous console ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1118 * driver could be in the same resolution but we are using different ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1119 * hardware so we have to initialize the hardware. ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1120 * ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1121 * We need to do it in fbcon_init() to prevent screen corruption. ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1122 */ 6ca8dfd78187d8 drivers/video/console/fbcon.c Jiri Slaby 2016-06-23 1123 if (con_is_visible(vc) && vc->vc_mode == KD_TEXT) { ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1124 if (info->fbops->fb_set_par && 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1125 !(ops->flags & FBCON_FLAGS_INIT)) { 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1126 ret = info->fbops->fb_set_par(info); 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1127 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1128 if (ret) 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1129 printk(KERN_ERR "fbcon_init: detected " 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1130 "unhandled fb_set_par error, " 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1131 "error code %d\n", ret); 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1132 } 0fcf6ada2b8eb4 drivers/video/console/fbcon.c Florian Tobias Schandinat 2009-09-22 1133 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1134 ops->flags |= FBCON_FLAGS_INIT; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1135 } ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1136 ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1137 ops->graphics = 0; ^1da177e4c3f41 drivers/video/console/fbcon.c Linus Torvalds 2005-04-16 1138 :::::: The code at line 1028 was first introduced by commit :::::: 87ab9f6b7417349aa197a6c7098d4fdd4beebb74 Revert "fbcon: Disable accelerated scrolling" :::::: TO: Helge Deller <deller(a)gmx.de&gt; :::::: CC: Daniel Vetter <daniel.vetter(a)ffwll.ch&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org