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Thu, 23 Jun 2022 01:27:52 +0000 Date: Thu, 23 Jun 2022 09:27:15 +0800 From: kernel test robot To: Sam Ravnborg Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Kieran Bingham , Maxime Ripard , Laurent Pinchart Subject: [kbingham-rcar:kbingham/drm-misc/next/sn65dsi86/hpd 10/21] drivers/gpu/drm/bridge/parade-ps8640.c:524:2: error: call to undeclared function 'drm_bridge_chain_pre_enable'; ISO C99 and later do not support implicit function declarations Message-ID: <202206230923.AHVRLVRb-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git kbingham/drm-misc/next/sn65dsi86/hpd head: 69c67e7d89e9e68e6ffb17deec7112af1d529ac9 commit: b88732c0df106217e663da0458bd46d061ec3ce4 [10/21] drm/bridge: Drop unused drm_bridge_chain functions config: hexagon-randconfig-r045-20220622 (https://download.01.org/0day-ci/archive/20220623/202206230923.AHVRLVRb-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 46be5faaf03466c3751f8a2882bef5a217e15926) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git/commit/?id=b88732c0df106217e663da0458bd46d061ec3ce4 git remote add kbingham-rcar https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git git fetch --no-tags kbingham-rcar kbingham/drm-misc/next/sn65dsi86/hpd git checkout b88732c0df106217e663da0458bd46d061ec3ce4 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/gpu/drm/bridge/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/gpu/drm/bridge/parade-ps8640.c:524:2: error: call to undeclared function 'drm_bridge_chain_pre_enable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] drm_bridge_chain_pre_enable(bridge); ^ >> drivers/gpu/drm/bridge/parade-ps8640.c:534:3: error: call to undeclared function 'drm_bridge_chain_post_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] drm_bridge_chain_post_disable(bridge); ^ 2 errors generated. vim +/drm_bridge_chain_pre_enable +524 drivers/gpu/drm/bridge/parade-ps8640.c 13afcdd7277eff Philip Chen 2021-09-21 504 d82c12ab16b847 Enric Balletbo i Serra 2020-08-26 505 static struct edid *ps8640_bridge_get_edid(struct drm_bridge *bridge, d82c12ab16b847 Enric Balletbo i Serra 2020-08-26 506 struct drm_connector *connector) d82c12ab16b847 Enric Balletbo i Serra 2020-08-26 507 { d82c12ab16b847 Enric Balletbo i Serra 2020-08-26 508 struct ps8640 *ps_bridge = bridge_to_ps8640(bridge); 826cff3f7ebba4 Philip Chen 2021-10-28 509 bool poweroff = !ps_bridge->pre_enabled; 46f206304db031 Enric Balletbo i Serra 2020-08-27 510 struct edid *edid; 46f206304db031 Enric Balletbo i Serra 2020-08-27 511 46f206304db031 Enric Balletbo i Serra 2020-08-27 512 /* 46f206304db031 Enric Balletbo i Serra 2020-08-27 513 * When we end calling get_edid() triggered by an ioctl, i.e 46f206304db031 Enric Balletbo i Serra 2020-08-27 514 * 46f206304db031 Enric Balletbo i Serra 2020-08-27 515 * drm_mode_getconnector (ioctl) 46f206304db031 Enric Balletbo i Serra 2020-08-27 516 * -> drm_helper_probe_single_connector_modes 46f206304db031 Enric Balletbo i Serra 2020-08-27 517 * -> drm_bridge_connector_get_modes 46f206304db031 Enric Balletbo i Serra 2020-08-27 518 * -> ps8640_bridge_get_edid 46f206304db031 Enric Balletbo i Serra 2020-08-27 519 * 46f206304db031 Enric Balletbo i Serra 2020-08-27 520 * We need to make sure that what we need is enabled before reading 46f206304db031 Enric Balletbo i Serra 2020-08-27 521 * EDID, for this chip, we need to do a full poweron, otherwise it will 46f206304db031 Enric Balletbo i Serra 2020-08-27 522 * fail. 46f206304db031 Enric Balletbo i Serra 2020-08-27 523 */ 46f206304db031 Enric Balletbo i Serra 2020-08-27 @524 drm_bridge_chain_pre_enable(bridge); d82c12ab16b847 Enric Balletbo i Serra 2020-08-26 525 46f206304db031 Enric Balletbo i Serra 2020-08-27 526 edid = drm_get_edid(connector, d82c12ab16b847 Enric Balletbo i Serra 2020-08-26 527 ps_bridge->page[PAGE0_DP_CNTL]->adapter); 46f206304db031 Enric Balletbo i Serra 2020-08-27 528 46f206304db031 Enric Balletbo i Serra 2020-08-27 529 /* 46f206304db031 Enric Balletbo i Serra 2020-08-27 530 * If we call the get_edid() function without having enabled the chip 46f206304db031 Enric Balletbo i Serra 2020-08-27 531 * before, return the chip to its original power state. 46f206304db031 Enric Balletbo i Serra 2020-08-27 532 */ 46f206304db031 Enric Balletbo i Serra 2020-08-27 533 if (poweroff) 46f206304db031 Enric Balletbo i Serra 2020-08-27 @534 drm_bridge_chain_post_disable(bridge); 46f206304db031 Enric Balletbo i Serra 2020-08-27 535 46f206304db031 Enric Balletbo i Serra 2020-08-27 536 return edid; d82c12ab16b847 Enric Balletbo i Serra 2020-08-26 537 } d82c12ab16b847 Enric Balletbo i Serra 2020-08-26 538 :::::: The code at line 524 was first introduced by commit :::::: 46f206304db0311b0920479f42accaa7cb472fdc drm/bridge: ps8640: Rework power state handling :::::: TO: Enric Balletbo i Serra :::::: CC: Neil Armstrong -- 0-DAY CI Kernel Test Service https://01.org/lkp