Hi Boris, First bad commit (maybe != root cause): tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next head: 216c1282dde38ca87ebdf1ccacee5a0682901574 commit: d72f049087d4f973f6332b599c92177e718107de [12/14] drm/panthor: Allow driver compilation config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20240303/202403031142.Vl4pW7X6-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240303/202403031142.Vl4pW7X6-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202403031142.Vl4pW7X6-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): drivers/gpu/drm/panthor/panthor_device.c: In function 'panthor_mmio_vm_fault': >> drivers/gpu/drm/panthor/panthor_device.c:355:31: error: implicit declaration of function 'virt_to_pfn'; did you mean 'virt_to_kpte'? [-Werror=implicit-function-declaration] 355 | pfn = virt_to_pfn(ptdev->pm.dummy_latest_flush); | ^~~~~~~~~~~ | virt_to_kpte cc1: some warnings being treated as errors vim +355 drivers/gpu/drm/panthor/panthor_device.c 5fe909cae118a7 Boris Brezillon 2024-02-29 332 5fe909cae118a7 Boris Brezillon 2024-02-29 333 static vm_fault_t panthor_mmio_vm_fault(struct vm_fault *vmf) 5fe909cae118a7 Boris Brezillon 2024-02-29 334 { 5fe909cae118a7 Boris Brezillon 2024-02-29 335 struct vm_area_struct *vma = vmf->vma; 5fe909cae118a7 Boris Brezillon 2024-02-29 336 struct panthor_device *ptdev = vma->vm_private_data; 5fe909cae118a7 Boris Brezillon 2024-02-29 337 u64 id = (u64)vma->vm_pgoff << PAGE_SHIFT; 5fe909cae118a7 Boris Brezillon 2024-02-29 338 unsigned long pfn; 5fe909cae118a7 Boris Brezillon 2024-02-29 339 pgprot_t pgprot; 5fe909cae118a7 Boris Brezillon 2024-02-29 340 vm_fault_t ret; 5fe909cae118a7 Boris Brezillon 2024-02-29 341 bool active; 5fe909cae118a7 Boris Brezillon 2024-02-29 342 int cookie; 5fe909cae118a7 Boris Brezillon 2024-02-29 343 5fe909cae118a7 Boris Brezillon 2024-02-29 344 if (!drm_dev_enter(&ptdev->base, &cookie)) 5fe909cae118a7 Boris Brezillon 2024-02-29 345 return VM_FAULT_SIGBUS; 5fe909cae118a7 Boris Brezillon 2024-02-29 346 5fe909cae118a7 Boris Brezillon 2024-02-29 347 mutex_lock(&ptdev->pm.mmio_lock); 5fe909cae118a7 Boris Brezillon 2024-02-29 348 active = atomic_read(&ptdev->pm.state) == PANTHOR_DEVICE_PM_STATE_ACTIVE; 5fe909cae118a7 Boris Brezillon 2024-02-29 349 5fe909cae118a7 Boris Brezillon 2024-02-29 350 switch (panthor_device_mmio_offset(id)) { 5fe909cae118a7 Boris Brezillon 2024-02-29 351 case DRM_PANTHOR_USER_FLUSH_ID_MMIO_OFFSET: 5fe909cae118a7 Boris Brezillon 2024-02-29 352 if (active) 5fe909cae118a7 Boris Brezillon 2024-02-29 353 pfn = __phys_to_pfn(ptdev->phys_addr + CSF_GPU_LATEST_FLUSH_ID); 5fe909cae118a7 Boris Brezillon 2024-02-29 354 else 5fe909cae118a7 Boris Brezillon 2024-02-29 @355 pfn = virt_to_pfn(ptdev->pm.dummy_latest_flush); 5fe909cae118a7 Boris Brezillon 2024-02-29 356 break; 5fe909cae118a7 Boris Brezillon 2024-02-29 357 5fe909cae118a7 Boris Brezillon 2024-02-29 358 default: 5fe909cae118a7 Boris Brezillon 2024-02-29 359 ret = VM_FAULT_SIGBUS; 5fe909cae118a7 Boris Brezillon 2024-02-29 360 goto out_unlock; 5fe909cae118a7 Boris Brezillon 2024-02-29 361 } 5fe909cae118a7 Boris Brezillon 2024-02-29 362 5fe909cae118a7 Boris Brezillon 2024-02-29 363 pgprot = vma->vm_page_prot; 5fe909cae118a7 Boris Brezillon 2024-02-29 364 if (active) 5fe909cae118a7 Boris Brezillon 2024-02-29 365 pgprot = pgprot_noncached(pgprot); 5fe909cae118a7 Boris Brezillon 2024-02-29 366 5fe909cae118a7 Boris Brezillon 2024-02-29 367 ret = vmf_insert_pfn_prot(vma, vmf->address, pfn, pgprot); 5fe909cae118a7 Boris Brezillon 2024-02-29 368 5fe909cae118a7 Boris Brezillon 2024-02-29 369 out_unlock: 5fe909cae118a7 Boris Brezillon 2024-02-29 370 mutex_unlock(&ptdev->pm.mmio_lock); 5fe909cae118a7 Boris Brezillon 2024-02-29 371 drm_dev_exit(cookie); 5fe909cae118a7 Boris Brezillon 2024-02-29 372 return ret; 5fe909cae118a7 Boris Brezillon 2024-02-29 373 } 5fe909cae118a7 Boris Brezillon 2024-02-29 374 :::::: The code at line 355 was first introduced by commit :::::: 5fe909cae118a757a77afb37174b99436a36d2e2 drm/panthor: Add the device logical block :::::: TO: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx> :::::: CC: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
