Hi Luca, kernel test robot noticed the following build errors:
[auto build test ERROR on 1174bf15bd601f17556f721798cd9183e169549a] url: https://github.com/intel-lab-lkp/linux/commits/Luca-Ceresoli/drm-mipi-dsi-add-sanity-check-of-lane-number-in-mipi_dsi_attach/20250626-005002 base: 1174bf15bd601f17556f721798cd9183e169549a patch link: https://lore.kernel.org/r/20250625-drm-dsi-host-no-device-ptr-v1-22-e36bc258a7c5%40bootlin.com patch subject: [PATCH 22/32] drm: renesas: rz-du: rzg2l_mipi_dsi: convert to the .attach_new op config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20250627/[email protected]/config) compiler: m68k-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250627/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All errors (new ones prefixed by >>): In file included from include/linux/device.h:15, from include/linux/dma-mapping.h:5, from drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c:11: drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c: In function 'rzg2l_mipi_dsi_host_attach': >> drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c:712:33: error: 'device' >> undeclared (first use in this function) 712 | device->format); | ^~~~~~ include/linux/dev_printk.h:110:37: note: in definition of macro 'dev_printk_index_wrap' 110 | _p_func(dev, fmt, ##__VA_ARGS__); \ | ^~~~~~~~~~~ drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c:711:25: note: in expansion of macro 'dev_err' 711 | dev_err(dsi->dev, "Unsupported format 0x%04x\n", | ^~~~~~~ drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c:712:33: note: each undeclared identifier is reported only once for each function it appears in 712 | device->format); | ^~~~~~ include/linux/dev_printk.h:110:37: note: in definition of macro 'dev_printk_index_wrap' 110 | _p_func(dev, fmt, ##__VA_ARGS__); \ | ^~~~~~~~~~~ drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c:711:25: note: in expansion of macro 'dev_err' 711 | dev_err(dsi->dev, "Unsupported format 0x%04x\n", | ^~~~~~~ vim +/device +712 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 686 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 687 /* ----------------------------------------------------------------------------- 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 688 * Host setting 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 689 */ 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 690 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 691 static int rzg2l_mipi_dsi_host_attach(struct mipi_dsi_host *host, e8120e232c40c1 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Luca Ceresoli 2025-06-25 692 const struct mipi_dsi_bus_fmt *bus_fmt) 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 693 { 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 694 struct rzg2l_mipi_dsi *dsi = host_to_rzg2l_mipi_dsi(host); 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 695 int ret; 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 696 e8120e232c40c1 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Luca Ceresoli 2025-06-25 697 if (bus_fmt->lanes > dsi->num_data_lanes) { 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 698 dev_err(dsi->dev, 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 699 "Number of lines of device (%u) exceeds host (%u)\n", e8120e232c40c1 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Luca Ceresoli 2025-06-25 700 bus_fmt->lanes, dsi->num_data_lanes); 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 701 return -EINVAL; 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 702 } 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 703 e8120e232c40c1 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Luca Ceresoli 2025-06-25 704 switch (mipi_dsi_pixel_format_to_bpp(bus_fmt->format)) { 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 705 case 24: a56a6b81d80fdf drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Lad Prabhakar 2025-06-09 706 break; 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 707 case 18: 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 708 break; a56a6b81d80fdf drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Lad Prabhakar 2025-06-09 709 case 16: a56a6b81d80fdf drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Lad Prabhakar 2025-06-09 710 if (!(dsi->info->features & RZ_MIPI_DSI_FEATURE_16BPP)) { a56a6b81d80fdf drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Lad Prabhakar 2025-06-09 711 dev_err(dsi->dev, "Unsupported format 0x%04x\n", a56a6b81d80fdf drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Lad Prabhakar 2025-06-09 @712 device->format); a56a6b81d80fdf drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Lad Prabhakar 2025-06-09 713 return -EINVAL; a56a6b81d80fdf drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Lad Prabhakar 2025-06-09 714 } a56a6b81d80fdf drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Lad Prabhakar 2025-06-09 715 break; 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 716 default: e8120e232c40c1 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Luca Ceresoli 2025-06-25 717 dev_err(dsi->dev, "Unsupported format 0x%04x\n", bus_fmt->format); 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 718 return -EINVAL; 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 719 } 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 720 e8120e232c40c1 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Luca Ceresoli 2025-06-25 721 dsi->lanes = bus_fmt->lanes; e8120e232c40c1 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Luca Ceresoli 2025-06-25 722 dsi->format = bus_fmt->format; e8120e232c40c1 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c Luca Ceresoli 2025-06-25 723 dsi->mode_flags = bus_fmt->mode_flags; 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 724 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 725 dsi->next_bridge = devm_drm_of_get_bridge(dsi->dev, dsi->dev->of_node, 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 726 1, 0); 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 727 if (IS_ERR(dsi->next_bridge)) { 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 728 ret = PTR_ERR(dsi->next_bridge); 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 729 dev_err(dsi->dev, "failed to get next bridge: %d\n", ret); 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 730 return ret; 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 731 } 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 732 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 733 drm_bridge_add(&dsi->bridge); 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 734 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 735 return 0; 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 736 } 7a043f978ed143 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c Biju Das 2022-09-20 737 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
