tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git debugfs_cleanup head: 9831e93ace88fcb51c013ceca0b097133c8efb5f commit: 9831e93ace88fcb51c013ceca0b097133c8efb5f [129/129] drm: huge cleanup... config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 9831e93ace88fcb51c013ceca0b097133c8efb5f # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=arm If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/gpu//drm/sti/sti_compositor.c: In function 'sti_compositor_debugfs_init': >> drivers/gpu//drm/sti/sti_compositor.c:55:9: warning: 'return' with a value, in function returning void return 0; ^ drivers/gpu//drm/sti/sti_compositor.c:42:6: note: declared here void sti_compositor_debugfs_init(struct sti_compositor *compo, ^~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/return +55 drivers/gpu//drm/sti/sti_compositor.c d219673d Benjamin Gaignard 2014-07-30 41 9831e93a Greg Kroah-Hartman 2019-06-13 42 void sti_compositor_debugfs_init(struct sti_compositor *compo, 83af0a48 Benjamin Gaignard 2016-06-21 43 struct drm_minor *minor) 83af0a48 Benjamin Gaignard 2016-06-21 44 { 38fdb8d9 Vincent Abriou 2016-09-15 45 unsigned int i; 83af0a48 Benjamin Gaignard 2016-06-21 46 38fdb8d9 Vincent Abriou 2016-09-15 47 for (i = 0; i < STI_MAX_VID; i++) 38fdb8d9 Vincent Abriou 2016-09-15 48 if (compo->vid[i]) 38fdb8d9 Vincent Abriou 2016-09-15 49 vid_debugfs_init(compo->vid[i], minor); 83af0a48 Benjamin Gaignard 2016-06-21 50 38fdb8d9 Vincent Abriou 2016-09-15 51 for (i = 0; i < STI_MAX_MIXER; i++) 38fdb8d9 Vincent Abriou 2016-09-15 52 if (compo->mixer[i]) 38fdb8d9 Vincent Abriou 2016-09-15 53 sti_mixer_debugfs_init(compo->mixer[i], minor); 83af0a48 Benjamin Gaignard 2016-06-21 54 83af0a48 Benjamin Gaignard 2016-06-21 @55 return 0; 83af0a48 Benjamin Gaignard 2016-06-21 56 } 83af0a48 Benjamin Gaignard 2016-06-21 57 :::::: The code at line 55 was first introduced by commit :::::: 83af0a483ac44594620ecae10a4d708b284972e1 drm: sti: use late_register and early_unregister callbacks :::::: TO: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx> :::::: CC: Daniel Vetter <daniel.vetter@xxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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