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X-CSE-ConnectionGUID: Tts75UcQSMOw9R5rodNnmw== X-CSE-MsgGUID: uhTMpkAWRHW4XOpZeUcxvQ== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="74948964" X-IronPort-AV: E=Sophos;i="6.19,257,1754982000"; d="scan'208";a="74948964" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2025 17:25:06 -0700 X-CSE-ConnectionGUID: ySgcXEVDSbW8178E1HI2Xw== X-CSE-MsgGUID: VmBD7t02QW+VBK4HGu5vCQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,257,1754982000"; d="scan'208";a="184806324" Received: from lkp-server02.sh.intel.com (HELO 66d7546c76b2) ([10.239.97.151]) by orviesa007.jf.intel.com with ESMTP; 26 Oct 2025 17:25:05 -0700 Received: from kbuild by 66d7546c76b2 with local (Exim 4.96) (envelope-from ) id 1vDB2k-000GPp-22; Mon, 27 Oct 2025 00:25:02 +0000 Date: Mon, 27 Oct 2025 08:24:18 +0800 From: kernel test robot To: LiangCheng Wang Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Thomas Zimmermann Subject: drivers/gpu/drm/tiny/pixpaper.c:579:12: warning: stack frame size (20024) exceeds limit (8192) in 'pixpaper_panel_hw_init' Message-ID: <202510270858.1GzE6iQg-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4bb1f7e19c4a1d6eeb52b80acff5ac63edd1b91d commit: c9e70639f5915f2d084a0126e62fe53a52c29cea drm: tiny: Add support for Mayqueen Pixpaper e-ink panel date: 7 weeks ago config: x86_64-randconfig-123-20251027 (https://download.01.org/0day-ci/archive/20251027/202510270858.1GzE6iQg-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251027/202510270858.1GzE6iQg-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/202510270858.1GzE6iQg-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/tiny/pixpaper.c:579:12: warning: stack frame size (20024) exceeds limit (8192) in 'pixpaper_panel_hw_init' [-Wframe-larger-than] 579 | static int pixpaper_panel_hw_init(struct pixpaper_panel *panel) | ^ 1 warning generated. vim +/pixpaper_panel_hw_init +579 drivers/gpu/drm/tiny/pixpaper.c 578 > 579 static int pixpaper_panel_hw_init(struct pixpaper_panel *panel) 580 { 581 struct pixpaper_error_ctx err = { .errno_code = 0 }; 582 583 gpiod_set_value_cansleep(panel->reset, 0); 584 msleep(50); 585 gpiod_set_value_cansleep(panel->reset, 1); 586 msleep(50); 587 588 pixpaper_wait_for_panel(panel); 589 590 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_4D, &err); 591 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_4D_CONFIG, &err); 592 if (err.errno_code) 593 goto init_fail; 594 pixpaper_wait_for_panel(panel); 595 596 pixpaper_send_cmd(panel, PIXPAPER_CMD_PANEL_SETTING, &err); 597 pixpaper_send_data(panel, PIXPAPER_PSR_CONFIG, &err); 598 pixpaper_send_data(panel, PIXPAPER_PSR_CONFIG2, &err); 599 if (err.errno_code) 600 goto init_fail; 601 pixpaper_wait_for_panel(panel); 602 603 pixpaper_send_cmd(panel, PIXPAPER_CMD_POWER_SETTING, &err); 604 pixpaper_send_data(panel, PIXPAPER_PWR_CONFIG1, &err); 605 pixpaper_send_data(panel, PIXPAPER_PWR_CONFIG2, &err); 606 pixpaper_send_data(panel, PIXPAPER_PWR_VSP_8_2V, &err); 607 pixpaper_send_data(panel, PIXPAPER_PWR_VSPL_15V, &err); 608 pixpaper_send_data(panel, PIXPAPER_PWR_VSN_4V, &err); 609 pixpaper_send_data(panel, PIXPAPER_PWR_VSP_8_2V, &err); 610 if (err.errno_code) 611 goto init_fail; 612 pixpaper_wait_for_panel(panel); 613 614 pixpaper_send_cmd(panel, PIXPAPER_CMD_POWER_OFF_SEQUENCE, &err); 615 pixpaper_send_data(panel, PIXPAPER_PFS_CONFIG1, &err); 616 pixpaper_send_data(panel, PIXPAPER_PFS_CONFIG2, &err); 617 pixpaper_send_data(panel, PIXPAPER_PFS_CONFIG3, &err); 618 if (err.errno_code) 619 goto init_fail; 620 pixpaper_wait_for_panel(panel); 621 622 pixpaper_send_cmd(panel, PIXPAPER_CMD_BOOSTER_SOFT_START, &err); 623 pixpaper_send_data(panel, PIXPAPER_BTST_CONFIG1, &err); 624 pixpaper_send_data(panel, PIXPAPER_BTST_CONFIG2, &err); 625 pixpaper_send_data(panel, PIXPAPER_BTST_CONFIG3, &err); 626 pixpaper_send_data(panel, PIXPAPER_BTST_CONFIG4, &err); 627 pixpaper_send_data(panel, PIXPAPER_BTST_CONFIG5, &err); 628 pixpaper_send_data(panel, PIXPAPER_BTST_CONFIG6, &err); 629 pixpaper_send_data(panel, PIXPAPER_BTST_CONFIG7, &err); 630 if (err.errno_code) 631 goto init_fail; 632 pixpaper_wait_for_panel(panel); 633 634 pixpaper_send_cmd(panel, PIXPAPER_CMD_PLL_CONTROL, &err); 635 pixpaper_send_data(panel, PIXPAPER_PLL_CONFIG, &err); 636 if (err.errno_code) 637 goto init_fail; 638 pixpaper_wait_for_panel(panel); 639 640 pixpaper_send_cmd(panel, PIXPAPER_CMD_TEMP_SENSOR_CALIB, &err); 641 pixpaper_send_data(panel, PIXPAPER_TSE_CONFIG, &err); 642 if (err.errno_code) 643 goto init_fail; 644 pixpaper_wait_for_panel(panel); 645 646 pixpaper_send_cmd(panel, PIXPAPER_CMD_VCOM_INTERVAL, &err); 647 pixpaper_send_data(panel, PIXPAPER_CDI_CONFIG, &err); 648 if (err.errno_code) 649 goto init_fail; 650 pixpaper_wait_for_panel(panel); 651 652 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_60, &err); 653 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_60_CONFIG1, &err); 654 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_60_CONFIG2, &err); 655 if (err.errno_code) 656 goto init_fail; 657 pixpaper_wait_for_panel(panel); 658 659 pixpaper_send_cmd(panel, PIXPAPER_CMD_RESOLUTION_SETTING, &err); 660 pixpaper_send_data(panel, PIXPAPER_TRES_HRES_H, &err); 661 pixpaper_send_data(panel, PIXPAPER_TRES_HRES_L, &err); 662 pixpaper_send_data(panel, PIXPAPER_TRES_VRES_H, &err); 663 pixpaper_send_data(panel, PIXPAPER_TRES_VRES_L, &err); 664 if (err.errno_code) 665 goto init_fail; 666 pixpaper_wait_for_panel(panel); 667 668 pixpaper_send_cmd(panel, PIXPAPER_CMD_GATE_SOURCE_START, &err); 669 pixpaper_send_data(panel, PIXPAPER_GSST_S_START, &err); 670 pixpaper_send_data(panel, PIXPAPER_GSST_RESERVED, &err); 671 pixpaper_send_data(panel, PIXPAPER_GSST_G_START_H, &err); 672 pixpaper_send_data(panel, PIXPAPER_GSST_G_START_L, &err); 673 if (err.errno_code) 674 goto init_fail; 675 pixpaper_wait_for_panel(panel); 676 677 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_E7, &err); 678 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_E7_CONFIG, &err); 679 if (err.errno_code) 680 goto init_fail; 681 pixpaper_wait_for_panel(panel); 682 683 pixpaper_send_cmd(panel, PIXPAPER_CMD_POWER_SAVING, &err); 684 pixpaper_send_data(panel, PIXPAPER_PWS_CONFIG, &err); 685 if (err.errno_code) 686 goto init_fail; 687 pixpaper_wait_for_panel(panel); 688 689 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_E0, &err); 690 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_E0_CONFIG, &err); 691 if (err.errno_code) 692 goto init_fail; 693 pixpaper_wait_for_panel(panel); 694 695 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_B4, &err); 696 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_B4_CONFIG, &err); 697 if (err.errno_code) 698 goto init_fail; 699 pixpaper_wait_for_panel(panel); 700 701 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_B5, &err); 702 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_B5_CONFIG, &err); 703 if (err.errno_code) 704 goto init_fail; 705 pixpaper_wait_for_panel(panel); 706 707 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_E9, &err); 708 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_E9_CONFIG, &err); 709 if (err.errno_code) 710 goto init_fail; 711 pixpaper_wait_for_panel(panel); 712 713 return 0; 714 715 init_fail: 716 drm_err(&panel->drm, "Hardware initialization failed (err=%d)\n", 717 err.errno_code); 718 return err.errno_code; 719 } 720 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki