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Sun, 28 Aug 2022 12:52:54 +0000 Date: Sun, 28 Aug 2022 20:52:39 +0800 From: kernel test robot To: Tomi Valkeinen Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Laurent Pinchart Subject: [pinchartl-media:drm/du/next 13/14] drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_enable' Message-ID: <202208282000.MtTNOyOx-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: git://linuxtv.org/pinchartl/media.git drm/du/next head: 1a1ef49313becc3127e3bd2b6cdb27e5fc54f761 commit: 81c238208c6accde5592851b101986b8b91ec859 [13/14] drm: rcar-du: Fix DSI enable & disable sequence config: riscv-randconfig-c006-20220828 (https://download.01.org/0day-ci/archive/20220828/202208282000.MtTNOyOx-lkp@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project a2100daf12fb980a29fd1a9c85ccf8eaaaf79730) 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 # install riscv cross compiling tool for clang build # apt-get install binutils-riscv-linux-gnu git remote add pinchartl-media git://linuxtv.org/pinchartl/media.git git fetch --no-tags pinchartl-media drm/du/next git checkout 81c238208c6accde5592851b101986b8b91ec859 # 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=riscv SHELL=/bin/bash drivers/gpu/drm/rcar-du/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_enable' [-Wmissing-prototypes] void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge, ^ drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge, ^ static >> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:653:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_disable' [-Wmissing-prototypes] void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge) ^ drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:653:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge) ^ static 2 warnings generated. vim +/rcar_mipi_dsi_pclk_enable +614 drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c 613 > 614 void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge, 615 struct drm_atomic_state *state) 616 { 617 struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge); 618 const struct drm_display_mode *mode; 619 struct drm_connector *connector; 620 struct drm_crtc *crtc; 621 int ret; 622 623 connector = drm_atomic_get_new_connector_for_encoder(state, 624 bridge->encoder); 625 crtc = drm_atomic_get_new_connector_state(state, connector)->crtc; 626 mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode; 627 628 ret = rcar_mipi_dsi_clk_enable(dsi); 629 if (ret < 0) { 630 dev_err(dsi->dev, "failed to enable DSI clocks\n"); 631 return; 632 } 633 634 ret = rcar_mipi_dsi_startup(dsi, mode); 635 if (ret < 0) 636 goto err_dsi_startup; 637 638 rcar_mipi_dsi_set_display_timing(dsi, mode); 639 640 ret = rcar_mipi_dsi_start_hs_clock(dsi); 641 if (ret < 0) 642 goto err_dsi_start_hs; 643 644 return; 645 646 err_dsi_start_hs: 647 rcar_mipi_dsi_shutdown(dsi); 648 err_dsi_startup: 649 rcar_mipi_dsi_clk_disable(dsi); 650 } 651 EXPORT_SYMBOL_GPL(rcar_mipi_dsi_pclk_enable); 652 > 653 void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge) 654 { 655 struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge); 656 657 rcar_mipi_dsi_shutdown(dsi); 658 rcar_mipi_dsi_clk_disable(dsi); 659 } 660 EXPORT_SYMBOL_GPL(rcar_mipi_dsi_pclk_disable); 661 -- 0-DAY CI Kernel Test Service https://01.org/lkp