tree:   git://people.freedesktop.org/~gabbayo/linux amdkfd-next
head:   c0307884529de823406fb17daf477f6af34ca5e5
commit: 88bd109688cf71dac908e5a06915996ee79fcef6 [5/8] drm/amdgpu: Add support for resuming SDMA queues w/o HWS
config: i386-randconfig-s0-201745 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout 88bd109688cf71dac908e5a06915996ee79fcef6
        # save the attached .config to linux build tree
        make ARCH=i386 

Note: the gabbayo/amdkfd-next HEAD c0307884529de823406fb17daf477f6af34ca5e5 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c: In function 'kgd_hqd_sdma_destroy':
>> drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c:540:3: error: dereferencing pointer to incomplete type 'struct cik_sdma_rlc_registers'
     m->sdmax_rlcx_rb_rptr = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR);
      ^~

vim +540 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c

   509	
   510	static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
   511					unsigned int utimeout)
   512	{
   513		struct amdgpu_device *adev = get_amdgpu_device(kgd);
   514		struct cik_sdma_rlc_registers *m;
   515		uint32_t sdma_base_addr;
   516		uint32_t temp;
   517		unsigned long end_jiffies = (utimeout * HZ / 1000) + jiffies;
   518	
   519		m = get_sdma_mqd(mqd);
   520		sdma_base_addr = get_sdma_base_addr(m);
   521	
   522		temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
   523		temp = temp & ~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK;
   524		WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL, temp);
   525	
   526		while (true) {
   527			temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS);
   528			if (temp & SDMA0_STATUS_REG__RB_CMD_IDLE__SHIFT)
   529				break;
   530			if (time_after(jiffies, end_jiffies))
   531				return -ETIME;
   532			usleep_range(500, 1000);
   533		}
   534	
   535		WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, 0);
   536		WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR, 0);
   537		WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_WPTR, 0);
   538		WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_BASE, 0);
   539	
 > 540		m->sdmax_rlcx_rb_rptr = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR);
   541	
   542		return 0;
   543	}
   544	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation