Merge tag 'drm-fixes-2021-12-10' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Regular fixes, pretty small overall, couple of core fixes, two i915
  and two amdgpu, hopefully it stays this quiet.

  ttm:
   - fix ttm_bo_swapout

  syncobj:
   - fix fence find bug with signalled fences

  i915:
   - fix error pointer deref in gem execbuffer
   - fix for GT init with GuC/HuC on ICL

  amdgpu:
   - DPIA fix
   - eDP fix"

* tag 'drm-fixes-2021-12-10' of git://anongit.freedesktop.org/drm/drm:
  drm/i915/gen11: Moving WAs to icl_gt_workarounds_init()
  drm/amd/display: prevent reading unitialized links
  drm/amd/display: Fix DPIA outbox timeout after S3/S4/reset
  drm/i915: Fix error pointer dereference in i915_gem_do_execbuffer()
  drm/syncobj: Deal with signalled fences in drm_syncobj_find_fence.
  drm/ttm: fix ttm_bo_swapout

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -2576,6 +2576,7 @@ static int dm_resume(void *handle)
 		 */
 		link_enc_cfg_init(dm->dc, dc_state);
 
+		if (dc_enable_dmub_notifications(adev->dm.dc))
 			amdgpu_dm_outbox_init(adev);
 
 		r = dm_dmub_hw_init(adev);
@@ -2625,6 +2626,10 @@ static int dm_resume(void *handle)
 	/* TODO: Remove dc_state->dccg, use dc->dccg directly. */
 	dc_resource_state_construct(dm->dc, dm_state->context);
 
+	/* Re-enable outbox interrupts for DPIA. */
+	if (dc_enable_dmub_notifications(adev->dm.dc))
+		amdgpu_dm_outbox_init(adev);
+
 	/* Before powering on DC we need to re-initialize DMUB. */
 	r = dm_dmub_hw_init(adev);
 	if (r)

drivers/gpu/drm/amd/display/dc/dc_link.h

@@ -226,6 +226,8 @@ static inline void get_edp_links(const struct dc *dc,
 	*edp_num = 0;
 	for (i = 0; i < dc->link_count; i++) {
 		// report any eDP links, even unconnected DDI's
+		if (!dc->links[i])
+			continue;
 		if (dc->links[i]->connector_signal == SIGNAL_TYPE_EDP) {
 			edp_links[*edp_num] = dc->links[i];
 			if (++(*edp_num) == MAX_NUM_EDP)

drivers/gpu/drm/drm_syncobj.c

@@ -404,8 +404,17 @@ int drm_syncobj_find_fence(struct drm_file *file_private,
 
 	if (*fence) {
 		ret = dma_fence_chain_find_seqno(fence, point);
-		if (!ret)
+		if (!ret) {
+			/* If the requested seqno is already signaled
+			 * drm_syncobj_find_fence may return a NULL
+			 * fence. To make sure the recipient gets
+			 * signalled, use a new fence instead.
+			 */
+			if (!*fence)
+				*fence = dma_fence_get_stub();
+
 			goto out;
+		}
 		dma_fence_put(*fence);
 	} else {
 		ret = -EINVAL;

drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c

@@ -3277,6 +3277,7 @@ i915_gem_do_execbuffer(struct drm_device *dev,
 	out_fence = eb_requests_create(&eb, in_fence, out_fence_fd);
 	if (IS_ERR(out_fence)) {
 		err = PTR_ERR(out_fence);
+		out_fence = NULL;
 		if (eb.requests[0])
 			goto err_request;
 		else

drivers/gpu/drm/i915/gt/intel_workarounds.c

@@ -1127,6 +1127,15 @@ icl_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
 		    GAMT_CHKN_BIT_REG,
 		    GAMT_CHKN_DISABLE_L3_COH_PIPE);
 
+	/* Wa_1407352427:icl,ehl */
+	wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2,
+		    PSDUNIT_CLKGATE_DIS);
+
+	/* Wa_1406680159:icl,ehl */
+	wa_write_or(wal,
+		    SUBSLICE_UNIT_LEVEL_CLKGATE,
+		    GWUNIT_CLKGATE_DIS);
+
 	/* Wa_1607087056:icl,ehl,jsl */
 	if (IS_ICELAKE(i915) ||
 	    IS_JSL_EHL_GT_STEP(i915, STEP_A0, STEP_B0))
@@ -1852,15 +1861,6 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 		wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE,
 			    VSUNIT_CLKGATE_DIS | HSUNIT_CLKGATE_DIS);
 
-		/* Wa_1407352427:icl,ehl */
-		wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2,
-			    PSDUNIT_CLKGATE_DIS);
-
-		/* Wa_1406680159:icl,ehl */
-		wa_write_or(wal,
-			    SUBSLICE_UNIT_LEVEL_CLKGATE,
-			    GWUNIT_CLKGATE_DIS);
-
 		/*
 		 * Wa_1408767742:icl[a2..forever],ehl[all]
 		 * Wa_1605460711:icl[a0..c0]

drivers/gpu/drm/ttm/ttm_bo.c

@@ -1103,7 +1103,7 @@ int ttm_bo_swapout(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx,
 	 * as an indication that we're about to swap out.
 	 */
 	memset(&place, 0, sizeof(place));
-	place.mem_type = TTM_PL_SYSTEM;
+	place.mem_type = bo->resource->mem_type;
 	if (!ttm_bo_evict_swapout_allowable(bo, ctx, &place, &locked, NULL))
 		return -EBUSY;
 
@@ -1135,6 +1135,7 @@ int ttm_bo_swapout(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx,
 		struct ttm_place hop;
 
 		memset(&hop, 0, sizeof(hop));
+		place.mem_type = TTM_PL_SYSTEM;
 		ret = ttm_resource_alloc(bo, &place, &evict_mem);
 		if (unlikely(ret))
 			goto out;