Hi Hans, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.8-rc4] [cannot apply to drm-intel/for-linux-next drm-tip/drm-tip next-20200708] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Hans-de-Goede/drm-Add-privacy-screen-class-and-connector-properties/20200709-004703 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dcde237b9b0eb1d19306e6f48c0a4e058907619f config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/platform/x86/thinkpad_acpi.c:9707:5: warning: no previous prototype for 'lcdshadow_set_sw_state' [-Wmissing-prototypes] 9707 | int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, | ^~~~~~~~~~~~~~~~~~~~~~ >> drivers/platform/x86/thinkpad_acpi.c:9722:6: warning: no previous prototype for 'lcdshadow_get_hw_state' [-Wmissing-prototypes] 9722 | void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) | ^~~~~~~~~~~~~~~~~~~~~~ vim +/lcdshadow_set_sw_state +9707 drivers/platform/x86/thinkpad_acpi.c 9706 > 9707 int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 9708 enum drm_privacy_screen_status state) 9709 { 9710 int output; 9711 9712 if (WARN_ON(!mutex_is_locked(&priv->lock))) 9713 return -EIO; 9714 9715 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 9716 return -EIO; 9717 9718 priv->hw_state = priv->sw_state = state; 9719 return 0; 9720 } 9721 > 9722 void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 9723 { 9724 int output; 9725 9726 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 9727 return; 9728 9729 priv->hw_state = priv->sw_state = output & 0x1; 9730 } 9731 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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