Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next

A few more fixes for 4.15.

* 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: use irq-safe lock for kiq->ring_lock
  drm/amdgpu: bypass lru touch for KIQ ring submission
  drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()
  drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()
  drm/amd/powerplay: initialize a variable before using it
  drm/amd/powerplay: suppress KASAN out of bounds warning in vega10_populate_all_memory_levels
  drm/amd/amdgpu: fix evicted VRAM bo adjudgement condition

drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c

@@ -136,7 +136,8 @@ void amdgpu_ring_commit(struct amdgpu_ring *ring)
 	if (ring->funcs->end_use)
 		ring->funcs->end_use(ring);
 
-	amdgpu_ring_lru_touch(ring->adev, ring);
+	if (ring->funcs->type != AMDGPU_RING_TYPE_KIQ)
+		amdgpu_ring_lru_touch(ring->adev, ring);
 }
 
 /**

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

@@ -1193,9 +1193,6 @@ static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
 	unsigned long num_pages = bo->mem.num_pages;
 	struct drm_mm_node *node = bo->mem.mm_node;
 
-	if (bo->mem.start != AMDGPU_BO_INVALID_OFFSET)
-		return ttm_bo_eviction_valuable(bo, place);
-
 	switch (bo->mem.mem_type) {
 	case TTM_PL_TT:
 		return true;
@@ -1210,7 +1207,7 @@ static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
 			num_pages -= node->size;
 			++node;
 		}
-		break;
+		return false;
 
 	default:
 		break;

drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c

@@ -648,7 +648,7 @@ int amdgpu_vce_ring_parse_cs(struct amdgpu_cs_parser *p, uint32_t ib_idx)
 	uint32_t allocated = 0;
 	uint32_t tmp, handle = 0;
 	uint32_t *size = &tmp;
-	int i, r, idx = 0;
+	int i, r = 0, idx = 0;
 
 	p->job->vm = NULL;
 	ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);

drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c

@@ -114,18 +114,19 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev)
 uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
 {
 	signed long r;
+	unsigned long flags;
 	uint32_t val, seq;
 	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 	struct amdgpu_ring *ring = &kiq->ring;
 
 	BUG_ON(!ring->funcs->emit_rreg);
 
-	spin_lock(&kiq->ring_lock);
+	spin_lock_irqsave(&kiq->ring_lock, flags);
 	amdgpu_ring_alloc(ring, 32);
 	amdgpu_ring_emit_rreg(ring, reg);
 	amdgpu_fence_emit_polling(ring, &seq);
 	amdgpu_ring_commit(ring);
-	spin_unlock(&kiq->ring_lock);
+	spin_unlock_irqrestore(&kiq->ring_lock, flags);
 
 	r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
 	if (r < 1) {
@@ -140,18 +141,19 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
 void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
 {
 	signed long r;
+	unsigned long flags;
 	uint32_t seq;
 	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 	struct amdgpu_ring *ring = &kiq->ring;
 
 	BUG_ON(!ring->funcs->emit_wreg);
 
-	spin_lock(&kiq->ring_lock);
+	spin_lock_irqsave(&kiq->ring_lock, flags);
 	amdgpu_ring_alloc(ring, 32);
 	amdgpu_ring_emit_wreg(ring, reg, v);
 	amdgpu_fence_emit_polling(ring, &seq);
 	amdgpu_ring_commit(ring);
-	spin_unlock(&kiq->ring_lock);
+	spin_unlock_irqrestore(&kiq->ring_lock, flags);
 
 	r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
 	if (r < 1)

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

@@ -1244,7 +1244,7 @@ static void amdgpu_vm_invalidate_level(struct amdgpu_vm *vm,
 int amdgpu_vm_update_directories(struct amdgpu_device *adev,
 				 struct amdgpu_vm *vm)
 {
-	int r;
+	int r = 0;
 
 	spin_lock(&vm->status_lock);
 	while (!list_empty(&vm->relocated)) {

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c

@@ -1807,6 +1807,10 @@ static int vega10_populate_all_memory_levels(struct pp_hwmgr *hwmgr)
 	mem_channels = (cgs_read_register(hwmgr->device, reg) &
 			DF_CS_AON0_DramBaseAddress0__IntLvNumChan_MASK) >>
 			DF_CS_AON0_DramBaseAddress0__IntLvNumChan__SHIFT;
+	PP_ASSERT_WITH_CODE(mem_channels < ARRAY_SIZE(channel_number),
+			"Mem Channel Index Exceeded maximum!",
+			return -1);
+
 	pp_table->NumMemoryChannels = cpu_to_le16(mem_channels);
 	pp_table->MemoryChannelWidth =
 			cpu_to_le16(HBM_MEMORY_CHANNEL_WIDTH *
@@ -3134,6 +3138,8 @@ static int vega10_apply_state_adjust_rules(struct pp_hwmgr *hwmgr,
 	minimum_clocks.memoryClock = hwmgr->display_config.min_mem_set_clock;
 
 	if (PP_CAP(PHM_PlatformCaps_StablePState)) {
+		stable_pstate_sclk_dpm_percentage =
+			data->registry_data.stable_pstate_sclk_dpm_percentage;
 		PP_ASSERT_WITH_CODE(
 			data->registry_data.stable_pstate_sclk_dpm_percentage >= 1 &&
 			data->registry_data.stable_pstate_sclk_dpm_percentage <= 100,