From: kernel test robot <lkp@intel.com>
To: Ivan Tverdohleb <mbkchelofficialdev@gmail.com>,
gregkh@linuxfoundation.org
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
linux-kernel@vger.kernel.org,
Ivan Tverdohleb <mbkchelofficialdev@gmail.com>
Subject: Re: [PATCH] staging: sm750fb: make g_fbmode array const
Date: Thu, 29 Oct 2026 21:50:54 +0800 [thread overview]
Message-ID: <202610292110.SLCiBWaB-lkp@intel.com> (raw)
In-Reply-To: <20261028074946.12728-1-mbkchelofficialdev@gmail.com>
Hi Ivan,
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/Ivan-Tverdohleb/staging-sm750fb-make-g_fbmode-array-const/20261028-094946
base: staging/staging-testing
patch link: https://lore.kernel.org/r/20261028074946.12728-1-mbkchelofficialdev%40gmail.com
patch subject: [PATCH] staging: sm750fb: make g_fbmode array const
config: i386-randconfig-1005-20261029 (https://download.01.org/0day-ci/archive/20261029/202610292110.SLCiBWaB-lkp@intel.com/config)
compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261029/202610292110.SLCiBWaB-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610292110.SLCiBWaB-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/staging/sm750fb/sm750.c:762:19: error: cannot assign to variable 'g_fbmode' with const-qualified type 'const char *const[2]'
762 | g_fbmode[index] = g_def_fbmode;
| ~~~~~~~~~~~~~~~ ^
drivers/staging/sm750fb/sm750.c:15:27: note: variable 'g_fbmode' declared const here
15 | static const char * const g_fbmode[] = {NULL, NULL};
| ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/staging/sm750fb/sm750.c:764:20: error: cannot assign to variable 'g_fbmode' with const-qualified type 'const char *const[2]'
764 | g_fbmode[index] = g_fbmode[0];
| ~~~~~~~~~~~~~~~ ^
drivers/staging/sm750fb/sm750.c:15:27: note: variable 'g_fbmode' declared const here
15 | static const char * const g_fbmode[] = {NULL, NULL};
| ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/staging/sm750fb/sm750.c:877:17: error: cannot assign to variable 'g_fbmode' with const-qualified type 'const char *const[2]'
877 | g_fbmode[0] = opt;
| ~~~~~~~~~~~ ^
drivers/staging/sm750fb/sm750.c:15:27: note: variable 'g_fbmode' declared const here
15 | static const char * const g_fbmode[] = {NULL, NULL};
| ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/staging/sm750fb/sm750.c:881:17: error: cannot assign to variable 'g_fbmode' with const-qualified type 'const char *const[2]'
881 | g_fbmode[1] = opt;
| ~~~~~~~~~~~ ^
drivers/staging/sm750fb/sm750.c:15:27: note: variable 'g_fbmode' declared const here
15 | static const char * const g_fbmode[] = {NULL, NULL};
| ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
4 errors generated.
vim +762 drivers/staging/sm750fb/sm750.c
81dee67e215b23 Sudip Mukherjee 2015-03-03 696
81dee67e215b23 Sudip Mukherjee 2015-03-03 697 static int lynxfb_set_fbinfo(struct fb_info *info, int index)
81dee67e215b23 Sudip Mukherjee 2015-03-03 698 {
81dee67e215b23 Sudip Mukherjee 2015-03-03 699 int i;
81dee67e215b23 Sudip Mukherjee 2015-03-03 700 struct lynxfb_par *par;
e359b6a863e19f Mike Rapoport 2015-10-26 701 struct sm750_dev *sm750_dev;
81dee67e215b23 Sudip Mukherjee 2015-03-03 702 struct lynxfb_crtc *crtc;
81dee67e215b23 Sudip Mukherjee 2015-03-03 703 struct lynxfb_output *output;
81dee67e215b23 Sudip Mukherjee 2015-03-03 704 struct fb_var_screeninfo *var;
81dee67e215b23 Sudip Mukherjee 2015-03-03 705 struct fb_fix_screeninfo *fix;
81dee67e215b23 Sudip Mukherjee 2015-03-03 706
81dee67e215b23 Sudip Mukherjee 2015-03-03 707 const struct fb_videomode *pdb[] = {
81dee67e215b23 Sudip Mukherjee 2015-03-03 708 lynx750_ext, NULL, vesa_modes,
81dee67e215b23 Sudip Mukherjee 2015-03-03 709 };
81dee67e215b23 Sudip Mukherjee 2015-03-03 710 int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE};
d0856045f0e9fc Hungyu Lin 2026-04-01 711 static const char * const fix_id[2] = {
81dee67e215b23 Sudip Mukherjee 2015-03-03 712 "sm750_fb1", "sm750_fb2",
81dee67e215b23 Sudip Mukherjee 2015-03-03 713 };
81dee67e215b23 Sudip Mukherjee 2015-03-03 714
81dee67e215b23 Sudip Mukherjee 2015-03-03 715 int ret, line_length;
81dee67e215b23 Sudip Mukherjee 2015-03-03 716
81dee67e215b23 Sudip Mukherjee 2015-03-03 717 ret = 0;
81dee67e215b23 Sudip Mukherjee 2015-03-03 718 par = (struct lynxfb_par *)info->par;
e359b6a863e19f Mike Rapoport 2015-10-26 719 sm750_dev = par->dev;
81dee67e215b23 Sudip Mukherjee 2015-03-03 720 crtc = &par->crtc;
81dee67e215b23 Sudip Mukherjee 2015-03-03 721 output = &par->output;
81dee67e215b23 Sudip Mukherjee 2015-03-03 722 var = &info->var;
81dee67e215b23 Sudip Mukherjee 2015-03-03 723 fix = &info->fix;
81dee67e215b23 Sudip Mukherjee 2015-03-03 724
81dee67e215b23 Sudip Mukherjee 2015-03-03 725 /* set index */
81dee67e215b23 Sudip Mukherjee 2015-03-03 726 par->index = index;
81dee67e215b23 Sudip Mukherjee 2015-03-03 727 output->channel = &crtc->channel;
81dee67e215b23 Sudip Mukherjee 2015-03-03 728 sm750fb_set_drv(par);
81dee67e215b23 Sudip Mukherjee 2015-03-03 729
d11ac7cbcc266c Sudip Mukherjee 2015-08-07 730 /*
d11ac7cbcc266c Sudip Mukherjee 2015-08-07 731 * set current cursor variable and proc pointer,
d11ac7cbcc266c Sudip Mukherjee 2015-08-07 732 * must be set after crtc member initialized
d11ac7cbcc266c Sudip Mukherjee 2015-08-07 733 */
fdc234d85210d9 Benjamin Philip 2021-07-28 734 crtc->cursor.offset = crtc->o_screen + crtc->vidmem_size - 1024;
1be54c03f7519c Jad Keskes 2026-06-19 735 crtc->cursor.mmio = sm750_dev->mmio +
e359b6a863e19f Mike Rapoport 2015-10-26 736 0x800f0 + (int)crtc->channel * 0x140;
81dee67e215b23 Sudip Mukherjee 2015-03-03 737
cd33da26036ea5 Christopher Carbone 2022-08-23 738 crtc->cursor.max_h = 64;
cd33da26036ea5 Christopher Carbone 2022-08-23 739 crtc->cursor.max_w = 64;
39f9137268ee3d Benjamin Philip 2021-07-26 740 crtc->cursor.size = crtc->cursor.max_h * crtc->cursor.max_w * 2 / 8;
f50b4602fea62f Jennifer Guo 2026-05-09 741 crtc->cursor.vstart = sm750_dev->vmem + crtc->cursor.offset;
81dee67e215b23 Sudip Mukherjee 2015-03-03 742
3de08a2d14ff8c Lorenzo Stoakes 2015-03-20 743 memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
f7c8a046577e09 Thomas Zimmermann 2023-11-27 744 if (!g_hwcursor)
52d0744d751d8f Arnd Bergmann 2016-11-09 745 sm750_hw_cursor_disable(&crtc->cursor);
81dee67e215b23 Sudip Mukherjee 2015-03-03 746
81dee67e215b23 Sudip Mukherjee 2015-03-03 747 /* set info->fbops, must be set before fb_find_mode */
e359b6a863e19f Mike Rapoport 2015-10-26 748 if (!sm750_dev->accel_off) {
81dee67e215b23 Sudip Mukherjee 2015-03-03 749 /* use 2d acceleration */
f7c8a046577e09 Thomas Zimmermann 2023-11-27 750 if (!g_hwcursor)
f7c8a046577e09 Thomas Zimmermann 2023-11-27 751 info->fbops = &lynxfb_ops_accel;
f7c8a046577e09 Thomas Zimmermann 2023-11-27 752 else
f7c8a046577e09 Thomas Zimmermann 2023-11-27 753 info->fbops = &lynxfb_ops_accel_with_cursor;
f7c8a046577e09 Thomas Zimmermann 2023-11-27 754 } else {
f7c8a046577e09 Thomas Zimmermann 2023-11-27 755 if (!g_hwcursor)
81dee67e215b23 Sudip Mukherjee 2015-03-03 756 info->fbops = &lynxfb_ops;
f7c8a046577e09 Thomas Zimmermann 2023-11-27 757 else
f7c8a046577e09 Thomas Zimmermann 2023-11-27 758 info->fbops = &lynxfb_ops_with_cursor;
f7c8a046577e09 Thomas Zimmermann 2023-11-27 759 }
81dee67e215b23 Sudip Mukherjee 2015-03-03 760
81dee67e215b23 Sudip Mukherjee 2015-03-03 761 if (!g_fbmode[index]) {
81dee67e215b23 Sudip Mukherjee 2015-03-03 @762 g_fbmode[index] = g_def_fbmode;
81dee67e215b23 Sudip Mukherjee 2015-03-03 763 if (index)
81dee67e215b23 Sudip Mukherjee 2015-03-03 764 g_fbmode[index] = g_fbmode[0];
81dee67e215b23 Sudip Mukherjee 2015-03-03 765 }
81dee67e215b23 Sudip Mukherjee 2015-03-03 766
81dee67e215b23 Sudip Mukherjee 2015-03-03 767 for (i = 0; i < 3; i++) {
81dee67e215b23 Sudip Mukherjee 2015-03-03 768 ret = fb_find_mode(var, info, g_fbmode[index],
81dee67e215b23 Sudip Mukherjee 2015-03-03 769 pdb[i], cdb[i], NULL, 8);
81dee67e215b23 Sudip Mukherjee 2015-03-03 770
db7fb3588ab492 Artem Lytkin 2026-02-23 771 if (ret == 1 || ret == 2)
81dee67e215b23 Sudip Mukherjee 2015-03-03 772 break;
81dee67e215b23 Sudip Mukherjee 2015-03-03 773 }
81dee67e215b23 Sudip Mukherjee 2015-03-03 774
81dee67e215b23 Sudip Mukherjee 2015-03-03 775 /* set par */
81dee67e215b23 Sudip Mukherjee 2015-03-03 776 par->info = info;
81dee67e215b23 Sudip Mukherjee 2015-03-03 777
81dee67e215b23 Sudip Mukherjee 2015-03-03 778 /* set info */
e3a3f9f5123683 Mike Rapoport 2015-10-26 779 line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8),
e3a3f9f5123683 Mike Rapoport 2015-10-26 780 crtc->line_pad);
81dee67e215b23 Sudip Mukherjee 2015-03-03 781
81dee67e215b23 Sudip Mukherjee 2015-03-03 782 info->pseudo_palette = &par->pseudo_palette[0];
cc59bde1c920ab Benjamin Philip 2021-07-28 783 info->screen_base = crtc->v_screen;
81dee67e215b23 Sudip Mukherjee 2015-03-03 784 info->screen_size = line_length * var->yres_virtual;
81dee67e215b23 Sudip Mukherjee 2015-03-03 785
81dee67e215b23 Sudip Mukherjee 2015-03-03 786 /* set info->fix */
81dee67e215b23 Sudip Mukherjee 2015-03-03 787 fix->type = FB_TYPE_PACKED_PIXELS;
81dee67e215b23 Sudip Mukherjee 2015-03-03 788 fix->type_aux = 0;
81dee67e215b23 Sudip Mukherjee 2015-03-03 789 fix->xpanstep = crtc->xpanstep;
81dee67e215b23 Sudip Mukherjee 2015-03-03 790 fix->ypanstep = crtc->ypanstep;
81dee67e215b23 Sudip Mukherjee 2015-03-03 791 fix->ywrapstep = crtc->ywrapstep;
81dee67e215b23 Sudip Mukherjee 2015-03-03 792 fix->accel = FB_ACCEL_SMI;
81dee67e215b23 Sudip Mukherjee 2015-03-03 793
8c475735085a7d Tim Wassink 2025-12-21 794 strscpy(fix->id, fix_id[index], sizeof(fix->id));
81dee67e215b23 Sudip Mukherjee 2015-03-03 795
fdc234d85210d9 Benjamin Philip 2021-07-28 796 fix->smem_start = crtc->o_screen + sm750_dev->vidmem_start;
d11ac7cbcc266c Sudip Mukherjee 2015-08-07 797 /*
d11ac7cbcc266c Sudip Mukherjee 2015-08-07 798 * according to mmap experiment from user space application,
81dee67e215b23 Sudip Mukherjee 2015-03-03 799 * fix->mmio_len should not larger than virtual size
81dee67e215b23 Sudip Mukherjee 2015-03-03 800 * (xres_virtual x yres_virtual x ByPP)
81dee67e215b23 Sudip Mukherjee 2015-03-03 801 * Below line maybe buggy when user mmap fb dev node and write
81dee67e215b23 Sudip Mukherjee 2015-03-03 802 * data into the bound over virtual size
d11ac7cbcc266c Sudip Mukherjee 2015-08-07 803 */
81dee67e215b23 Sudip Mukherjee 2015-03-03 804 fix->smem_len = crtc->vidmem_size;
81dee67e215b23 Sudip Mukherjee 2015-03-03 805 info->screen_size = fix->smem_len;
81dee67e215b23 Sudip Mukherjee 2015-03-03 806 fix->line_length = line_length;
e359b6a863e19f Mike Rapoport 2015-10-26 807 fix->mmio_start = sm750_dev->vidreg_start;
e359b6a863e19f Mike Rapoport 2015-10-26 808 fix->mmio_len = sm750_dev->vidreg_size;
b610e1193a917f Matej Dujava 2020-04-30 809
b610e1193a917f Matej Dujava 2020-04-30 810 lynxfb_set_visual_mode(info);
81dee67e215b23 Sudip Mukherjee 2015-03-03 811
81dee67e215b23 Sudip Mukherjee 2015-03-03 812 /* set var */
81dee67e215b23 Sudip Mukherjee 2015-03-03 813 var->activate = FB_ACTIVATE_NOW;
81dee67e215b23 Sudip Mukherjee 2015-03-03 814 var->accel_flags = 0;
81dee67e215b23 Sudip Mukherjee 2015-03-03 815 var->vmode = FB_VMODE_NONINTERLACED;
81dee67e215b23 Sudip Mukherjee 2015-03-03 816
61c507cf652da1 Michel von Czettritz 2015-03-26 817 ret = fb_alloc_cmap(&info->cmap, 256, 0);
61c507cf652da1 Michel von Czettritz 2015-03-26 818 if (ret < 0) {
fbab250eb51d6d Artem Lytkin 2026-02-07 819 dev_err(info->device, "Could not allocate memory for cmap.\n");
81dee67e215b23 Sudip Mukherjee 2015-03-03 820 goto exit;
81dee67e215b23 Sudip Mukherjee 2015-03-03 821 }
81dee67e215b23 Sudip Mukherjee 2015-03-03 822
81dee67e215b23 Sudip Mukherjee 2015-03-03 823 exit:
81dee67e215b23 Sudip Mukherjee 2015-03-03 824 lynxfb_ops_check_var(var, info);
81dee67e215b23 Sudip Mukherjee 2015-03-03 825 return ret;
81dee67e215b23 Sudip Mukherjee 2015-03-03 826 }
81dee67e215b23 Sudip Mukherjee 2015-03-03 827
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next parent reply other threads:[~2026-10-29 13:51 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20261028074946.12728-1-mbkchelofficialdev@gmail.com>
2026-10-29 13:50 ` kernel test robot [this message]
2026-10-07 10:10 [PATCH] staging: sm750fb: make g_fbmode array const pdsj2807
2026-10-07 14:33 ` Ahmet Sezgin Duran
[not found] ` <CANNUkNj7WJ0TNZUGAdJh9r7FQRQDvj8DmB9_HDD7sonNDHkRnA@mail.gmail.com>
2026-10-12 14:13 ` Ahmet Sezgin Duran
-- strict thread matches above, loose matches on Subject: below --
2026-07-01 4:14 Ruziev Miraly
2026-07-01 5:06 ` Dan Carpenter
[not found] ` <CAOW+FoFQVdBXMVfF2n2eV0_2u71apaQM8fV+uO1JVasqcqq-vQ@mail.gmail.com>
2026-07-01 7:26 ` Greg KH
2026-07-03 4:12 ` kernel test robot
2026-07-03 14:39 ` kernel test robot
2026-06-21 4:44 Arnav Kapoor
2026-06-09 1:17 Brock Haftner
2026-06-09 6:12 ` Ahmet Sezgin Duran
2026-06-10 0:58 ` Brock Haftner
2026-02-02 2:32 James
2026-02-02 7:50 ` kernel test robot
2026-02-02 9:02 ` kernel test robot
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