Hi Maarten, I love your patch! Yet something to improve: [auto build test ERROR on drm-tip/drm-tip] [cannot apply to drm-intel/for-linux-next v5.7-rc6 next-20200519] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Maarten-Lankhorst/Revert-drm-i91... base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: x86_64-defconfig (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from arch/x86/include/asm/bug.h:83:0, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from arch/x86/include/asm/preempt.h:7, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from include/linux/pm_runtime.h:11, from drivers/gpu/drm/i915/gt/intel_rc6.c:7: drivers/gpu/drm/i915/i915_vma.h: In function 'i915_vma_pin': #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base) ^ include/asm-generic/bug.h:151:27: note: in definition of macro 'WARN_ONCE' int __ret_warn_once = !!(condition); ^~~~~~~~~ WARN_ON_ONCE(vma->resv && dma_resv_held(vma->resv)); ^~~~~~~~~~~~ WARN_ON_ONCE(vma->resv && dma_resv_held(vma->resv)); ^~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:83:0, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from arch/x86/include/asm/preempt.h:7, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/sched/mm.h:7, from drivers/gpu/drm/i915/gem/i915_gem_object.c:25: drivers/gpu/drm/i915/i915_vma.h: In function 'i915_vma_pin': include/linux/dma-resv.h:80:28: error: implicit declaration of function 'lockdep_is_held'; did you mean 'lockdep_is_held_type'? [-Werror=implicit-function-declaration] #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base) ^ include/asm-generic/bug.h:151:27: note: in definition of macro 'WARN_ONCE' int __ret_warn_once = !!(condition); ^~~~~~~~~ WARN_ON_ONCE(vma->resv && dma_resv_held(vma->resv)); ^~~~~~~~~~~~ WARN_ON_ONCE(vma->resv && dma_resv_held(vma->resv)); ^~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +80 include/linux/dma-resv.h 786d7257e537da include/linux/reservation.h Maarten Lankhorst 2013-06-27 79 52791eeec1d9f4 include/linux/dma-resv.h Christian König 2019-08-11 @80 #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base) 52791eeec1d9f4 include/linux/dma-resv.h Christian König 2019-08-11 81 #define dma_resv_assert_held(obj) lockdep_assert_held(&(obj)->lock.base) 04a5faa8cbe5a8 include/linux/reservation.h Maarten Lankhorst 2014-07-01 82 :::::: The code at line 80 was first introduced by commit :::::: 52791eeec1d9f4a7e7fe08aaba0b1553149d93bc dma-buf: rename reservation_object to dma_resv :::::: TO: Christian König <christian.koenig(a)amd.com&gt; :::::: CC: Christian König <christian.koenig(a)amd.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org