Hi Thomas, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.10-rc4] [cannot apply to next-20201113] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Thomas-Zimmermann/drm-Build-fixe... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f8394f232b1eab649ce2df5c5f15b0e528c92091 config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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://github.com/0day-ci/linux/commit/23efc78fd2f5e71dabe163eec64d60989... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Thomas-Zimmermann/drm-Build-fixes-for-msm-and-mediatek/20201109-183736 git checkout 23efc78fd2f5e71dabe163eec64d609891160175 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/msm/msm_drv.c:21: drivers/gpu/drm/msm/msm_drv.h:299:59: warning: 'struct dma_buf_map' declared inside parameter list will not be visible outside of this definition or declaration 299 | int msm_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map); | ^~~~~~~~~~~ drivers/gpu/drm/msm/msm_drv.h:300:62: warning: 'struct dma_buf_map' declared inside parameter list will not be visible outside of this definition or declaration 300 | void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map); | ^~~~~~~~~~~ drivers/gpu/drm/msm/msm_drv.c:123:15: warning: no previous prototype for '_msm_ioremap' [-Wmissing-prototypes] 123 | void __iomem *_msm_ioremap(struct platform_device *pdev, const char *name, | ^~~~~~~~~~~~ 1016 | .gem_prime_vmap = msm_gem_prime_vmap, | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/msm/msm_drv.c:1016:24: note: (near initialization for 'msm_driver.gem_prime_vmap') 1017 | .gem_prime_vunmap = msm_gem_prime_vunmap, | ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/msm/msm_drv.c:1017:24: note: (near initialization for 'msm_driver.gem_prime_vunmap') cc1: some warnings being treated as errors -- In file included from drivers/gpu/drm/msm/msm_gem_prime.c:11: drivers/gpu/drm/msm/msm_drv.h:299:59: warning: 'struct dma_buf_map' declared inside parameter list will not be visible outside of this definition or declaration 299 | int msm_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map); | ^~~~~~~~~~~ drivers/gpu/drm/msm/msm_drv.h:300:62: warning: 'struct dma_buf_map' declared inside parameter list will not be visible outside of this definition or declaration 300 | void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map); | ^~~~~~~~~~~ 25 | int msm_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map) | ^~~~~~~~~~~ 25 | int msm_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map) | ^~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/msm/msm_gem_prime.c:11: drivers/gpu/drm/msm/msm_drv.h:299:5: note: previous declaration of 'msm_gem_prime_vmap' was here 299 | int msm_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map); | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/msm/msm_gem_prime.c: In function 'msm_gem_prime_vmap': 32 | dma_buf_map_set_vaddr(map, vaddr); | ^~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/msm/msm_gem_prime.c: At top level: drivers/gpu/drm/msm/msm_gem_prime.c:37:62: warning: 'struct dma_buf_map' declared inside parameter list will not be visible outside of this definition or declaration 37 | void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map) | ^~~~~~~~~~~ 37 | void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map) | ^~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/msm/msm_gem_prime.c:11: drivers/gpu/drm/msm/msm_drv.h:300:6: note: previous declaration of 'msm_gem_prime_vunmap' was here 300 | void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map); | ^~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +1016 drivers/gpu/drm/msm/msm_drv.c c8afe684c95cd17 Rob Clark 2013-06-26 992 c8afe684c95cd17 Rob Clark 2013-06-26 993 static struct drm_driver msm_driver = { 5b38e7475e3dc54 Daniel Vetter 2019-01-29 994 .driver_features = DRIVER_GEM | b4b15c865da67e6 Rob Clark 2013-09-28 995 DRIVER_RENDER | a5436e1d241488f Rob Clark 2015-06-04 996 DRIVER_ATOMIC | ab723b7a992a19b Bas Nieuwenhuizen 2020-01-24 997 DRIVER_MODESET | ab723b7a992a19b Bas Nieuwenhuizen 2020-01-24 998 DRIVER_SYNCOBJ, 7198e6b03155f6d Rob Clark 2013-07-19 999 .open = msm_open, 94df145c7e17c62 Daniel Vetter 2017-03-08 1000 .postclose = msm_postclose, 4ccbc6e57562965 Noralf Trønnes 2017-12-05 1001 .lastclose = drm_fb_helper_lastclose, c8afe684c95cd17 Rob Clark 2013-06-26 1002 .irq_handler = msm_irq, c8afe684c95cd17 Rob Clark 2013-06-26 1003 .irq_preinstall = msm_irq_preinstall, c8afe684c95cd17 Rob Clark 2013-06-26 1004 .irq_postinstall = msm_irq_postinstall, c8afe684c95cd17 Rob Clark 2013-06-26 1005 .irq_uninstall = msm_irq_uninstall, 48e7f18392c66f9 Kristian H. Kristensen 2019-03-20 1006 .gem_free_object_unlocked = msm_gem_free_object, c8afe684c95cd17 Rob Clark 2013-06-26 1007 .gem_vm_ops = &vm_ops, c8afe684c95cd17 Rob Clark 2013-06-26 1008 .dumb_create = msm_gem_dumb_create, c8afe684c95cd17 Rob Clark 2013-06-26 1009 .dumb_map_offset = msm_gem_dumb_map_offset, 05b849111c07454 Rob Clark 2013-09-28 1010 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 05b849111c07454 Rob Clark 2013-09-28 1011 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 05b849111c07454 Rob Clark 2013-09-28 1012 .gem_prime_pin = msm_gem_prime_pin, 05b849111c07454 Rob Clark 2013-09-28 1013 .gem_prime_unpin = msm_gem_prime_unpin, 05b849111c07454 Rob Clark 2013-09-28 1014 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table, 05b849111c07454 Rob Clark 2013-09-28 1015 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table, 05b849111c07454 Rob Clark 2013-09-28 @1016 .gem_prime_vmap = msm_gem_prime_vmap, 05b849111c07454 Rob Clark 2013-09-28 @1017 .gem_prime_vunmap = msm_gem_prime_vunmap, 77a147e742afe33 Daniel Thompson 2014-11-12 1018 .gem_prime_mmap = msm_gem_prime_mmap, c8afe684c95cd17 Rob Clark 2013-06-26 1019 #ifdef CONFIG_DEBUG_FS c8afe684c95cd17 Rob Clark 2013-06-26 1020 .debugfs_init = msm_debugfs_init, c8afe684c95cd17 Rob Clark 2013-06-26 1021 #endif 7198e6b03155f6d Rob Clark 2013-07-19 1022 .ioctls = msm_ioctls, 167b606aa262270 Jordan Crouse 2017-05-08 1023 .num_ioctls = ARRAY_SIZE(msm_ioctls), c8afe684c95cd17 Rob Clark 2013-06-26 1024 .fops = &fops, c8afe684c95cd17 Rob Clark 2013-06-26 1025 .name = "msm", c8afe684c95cd17 Rob Clark 2013-06-26 1026 .desc = "MSM Snapdragon DRM", c8afe684c95cd17 Rob Clark 2013-06-26 1027 .date = "20130625", a8d854c102f8809 Rob Clark 2016-06-01 1028 .major = MSM_VERSION_MAJOR, a8d854c102f8809 Rob Clark 2016-06-01 1029 .minor = MSM_VERSION_MINOR, a8d854c102f8809 Rob Clark 2016-06-01 1030 .patchlevel = MSM_VERSION_PATCHLEVEL, c8afe684c95cd17 Rob Clark 2013-06-26 1031 }; c8afe684c95cd17 Rob Clark 2013-06-26 1032 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org