Merge tag 'drm-misc-fixes-2024-04-11' of...

Merge tag 'drm-misc-fixes-2024-04-11' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

Short summary of fixes pull:

ast:
- Fix soft lockup

client:
- Protect connector modes with mode_config mutex

host1x:
- Do not setup DMA for virtual addresses

ivpu:
- Fix deadlock in context_xa
- PCI fixes
- Fixes to error handling

nouveau:
- gsp: Fix OOB access
- Fix casting

panfrost:
- Fix error path in MMU code

qxl:
- Revert "drm/qxl: simplify qxl_fence_wait"

vmwgfx:
- Enable DMA for SEV mappings
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240411073403.GA9895@localhost.localdomain

drivers/accel/ivpu/ivpu_drv.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2020-2023 Intel Corporation
+ * Copyright (C) 2020-2024 Intel Corporation
  */
 
 #include <linux/firmware.h>
@@ -131,22 +131,6 @@ static int ivpu_get_capabilities(struct ivpu_device *vdev, struct drm_ivpu_param
 	return 0;
 }
 
-static int ivpu_get_core_clock_rate(struct ivpu_device *vdev, u64 *clk_rate)
-{
-	int ret;
-
-	ret = ivpu_rpm_get_if_active(vdev);
-	if (ret < 0)
-		return ret;
-
-	*clk_rate = ret ? ivpu_hw_reg_pll_freq_get(vdev) : 0;
-
-	if (ret)
-		ivpu_rpm_put(vdev);
-
-	return 0;
-}
-
 static int ivpu_get_param_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 {
 	struct ivpu_file_priv *file_priv = file->driver_priv;
@@ -170,7 +154,7 @@ static int ivpu_get_param_ioctl(struct drm_device *dev, void *data, struct drm_f
 		args->value = vdev->platform;
 		break;
 	case DRM_IVPU_PARAM_CORE_CLOCK_RATE:
-		ret = ivpu_get_core_clock_rate(vdev, &args->value);
+		args->value = ivpu_hw_ratio_to_freq(vdev, vdev->hw->pll.max_ratio);
 		break;
 	case DRM_IVPU_PARAM_NUM_CONTEXTS:
 		args->value = ivpu_get_context_count(vdev);
@@ -387,12 +371,15 @@ int ivpu_shutdown(struct ivpu_device *vdev)
 {
 	int ret;
 
-	ivpu_prepare_for_reset(vdev);
+	/* Save PCI state before powering down as it sometimes gets corrupted if NPU hangs */
+	pci_save_state(to_pci_dev(vdev->drm.dev));
 
 	ret = ivpu_hw_power_down(vdev);
 	if (ret)
 		ivpu_warn(vdev, "Failed to power down HW: %d\n", ret);
 
+	pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
+
 	return ret;
 }
 
@@ -530,7 +517,7 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
 	vdev->context_xa_limit.min = IVPU_USER_CONTEXT_MIN_SSID;
 	vdev->context_xa_limit.max = IVPU_USER_CONTEXT_MAX_SSID;
 	atomic64_set(&vdev->unique_id_counter, 0);
-	xa_init_flags(&vdev->context_xa, XA_FLAGS_ALLOC);
+	xa_init_flags(&vdev->context_xa, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ);
 	xa_init_flags(&vdev->submitted_jobs_xa, XA_FLAGS_ALLOC1);
 	xa_init_flags(&vdev->db_xa, XA_FLAGS_ALLOC1);
 	lockdep_set_class(&vdev->submitted_jobs_xa.xa_lock, &submitted_jobs_xa_lock_class_key);
@@ -560,11 +547,11 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
 	/* Power up early so the rest of init code can access VPU registers */
 	ret = ivpu_hw_power_up(vdev);
 	if (ret)
-		goto err_power_down;
+		goto err_shutdown;
 
 	ret = ivpu_mmu_global_context_init(vdev);
 	if (ret)
-		goto err_power_down;
+		goto err_shutdown;
 
 	ret = ivpu_mmu_init(vdev);
 	if (ret)
@@ -601,10 +588,8 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
 	ivpu_mmu_reserved_context_fini(vdev);
 err_mmu_gctx_fini:
 	ivpu_mmu_global_context_fini(vdev);
-err_power_down:
-	ivpu_hw_power_down(vdev);
-	if (IVPU_WA(d3hot_after_power_off))
-		pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
+err_shutdown:
+	ivpu_shutdown(vdev);
 err_xa_destroy:
 	xa_destroy(&vdev->db_xa);
 	xa_destroy(&vdev->submitted_jobs_xa);
@@ -628,9 +613,8 @@ static void ivpu_bo_unbind_all_user_contexts(struct ivpu_device *vdev)
 static void ivpu_dev_fini(struct ivpu_device *vdev)
 {
 	ivpu_pm_disable(vdev);
+	ivpu_prepare_for_reset(vdev);
 	ivpu_shutdown(vdev);
-	if (IVPU_WA(d3hot_after_power_off))
-		pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
 
 	ivpu_jobs_abort_all(vdev);
 	ivpu_job_done_consumer_fini(vdev);

drivers/accel/ivpu/ivpu_drv.h

 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (C) 2020-2023 Intel Corporation
+ * Copyright (C) 2020-2024 Intel Corporation
  */
 
 #ifndef __IVPU_DRV_H__
@@ -90,7 +90,6 @@
 struct ivpu_wa_table {
 	bool punit_disabled;
 	bool clear_runtime_mem;
-	bool d3hot_after_power_off;
 	bool interrupt_clear_with_0;
 	bool disable_clock_relinquish;
 	bool disable_d0i3_msg;

drivers/accel/ivpu/ivpu_hw.h

@@ -21,6 +21,7 @@ struct ivpu_hw_ops {
 	u32 (*profiling_freq_get)(struct ivpu_device *vdev);
 	void (*profiling_freq_drive)(struct ivpu_device *vdev, bool enable);
 	u32 (*reg_pll_freq_get)(struct ivpu_device *vdev);
+	u32 (*ratio_to_freq)(struct ivpu_device *vdev, u32 ratio);
 	u32 (*reg_telemetry_offset_get)(struct ivpu_device *vdev);
 	u32 (*reg_telemetry_size_get)(struct ivpu_device *vdev);
 	u32 (*reg_telemetry_enable_get)(struct ivpu_device *vdev);
@@ -130,6 +131,11 @@ static inline u32 ivpu_hw_reg_pll_freq_get(struct ivpu_device *vdev)
 	return vdev->hw->ops->reg_pll_freq_get(vdev);
 };
 
+static inline u32 ivpu_hw_ratio_to_freq(struct ivpu_device *vdev, u32 ratio)
+{
+	return vdev->hw->ops->ratio_to_freq(vdev, ratio);
+}
+
 static inline u32 ivpu_hw_reg_telemetry_offset_get(struct ivpu_device *vdev)
 {
 	return vdev->hw->ops->reg_telemetry_offset_get(vdev);

drivers/accel/ivpu/ivpu_hw_37xx.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2020-2023 Intel Corporation
+ * Copyright (C) 2020-2024 Intel Corporation
  */
 
 #include "ivpu_drv.h"
@@ -75,7 +75,6 @@ static void ivpu_hw_wa_init(struct ivpu_device *vdev)
 {
 	vdev->wa.punit_disabled = false;
 	vdev->wa.clear_runtime_mem = false;
-	vdev->wa.d3hot_after_power_off = true;
 
 	REGB_WR32(VPU_37XX_BUTTRESS_INTERRUPT_STAT, BUTTRESS_ALL_IRQ_MASK);
 	if (REGB_RD32(VPU_37XX_BUTTRESS_INTERRUPT_STAT) == BUTTRESS_ALL_IRQ_MASK) {
@@ -86,7 +85,6 @@ static void ivpu_hw_wa_init(struct ivpu_device *vdev)
 
 	IVPU_PRINT_WA(punit_disabled);
 	IVPU_PRINT_WA(clear_runtime_mem);
-	IVPU_PRINT_WA(d3hot_after_power_off);
 	IVPU_PRINT_WA(interrupt_clear_with_0);
 }
 
@@ -805,12 +803,12 @@ static void ivpu_hw_37xx_profiling_freq_drive(struct ivpu_device *vdev, bool ena
 	/* Profiling freq - is a debug feature. Unavailable on VPU 37XX. */
 }
 
-static u32 ivpu_hw_37xx_pll_to_freq(u32 ratio, u32 config)
+static u32 ivpu_hw_37xx_ratio_to_freq(struct ivpu_device *vdev, u32 ratio)
 {
 	u32 pll_clock = PLL_REF_CLK_FREQ * ratio;
 	u32 cpu_clock;
 
-	if ((config & 0xff) == PLL_RATIO_4_3)
+	if ((vdev->hw->config & 0xff) == PLL_RATIO_4_3)
 		cpu_clock = pll_clock * 2 / 4;
 	else
 		cpu_clock = pll_clock * 2 / 5;
@@ -829,7 +827,7 @@ static u32 ivpu_hw_37xx_reg_pll_freq_get(struct ivpu_device *vdev)
 	if (!ivpu_is_silicon(vdev))
 		return PLL_SIMULATION_FREQ;
 
-	return ivpu_hw_37xx_pll_to_freq(pll_curr_ratio, vdev->hw->config);
+	return ivpu_hw_37xx_ratio_to_freq(vdev, pll_curr_ratio);
 }
 
 static u32 ivpu_hw_37xx_reg_telemetry_offset_get(struct ivpu_device *vdev)
@@ -1052,6 +1050,7 @@ const struct ivpu_hw_ops ivpu_hw_37xx_ops = {
 	.profiling_freq_get = ivpu_hw_37xx_profiling_freq_get,
 	.profiling_freq_drive = ivpu_hw_37xx_profiling_freq_drive,
 	.reg_pll_freq_get = ivpu_hw_37xx_reg_pll_freq_get,
+	.ratio_to_freq = ivpu_hw_37xx_ratio_to_freq,
 	.reg_telemetry_offset_get = ivpu_hw_37xx_reg_telemetry_offset_get,
 	.reg_telemetry_size_get = ivpu_hw_37xx_reg_telemetry_size_get,
 	.reg_telemetry_enable_get = ivpu_hw_37xx_reg_telemetry_enable_get,

drivers/accel/ivpu/ivpu_hw_40xx.c

@@ -980,6 +980,11 @@ static u32 ivpu_hw_40xx_reg_pll_freq_get(struct ivpu_device *vdev)
 	return PLL_RATIO_TO_FREQ(pll_curr_ratio);
 }
 
+static u32 ivpu_hw_40xx_ratio_to_freq(struct ivpu_device *vdev, u32 ratio)
+{
+	return PLL_RATIO_TO_FREQ(ratio);
+}
+
 static u32 ivpu_hw_40xx_reg_telemetry_offset_get(struct ivpu_device *vdev)
 {
 	return REGB_RD32(VPU_40XX_BUTTRESS_VPU_TELEMETRY_OFFSET);
@@ -1230,6 +1235,7 @@ const struct ivpu_hw_ops ivpu_hw_40xx_ops = {
 	.profiling_freq_get = ivpu_hw_40xx_profiling_freq_get,
 	.profiling_freq_drive = ivpu_hw_40xx_profiling_freq_drive,
 	.reg_pll_freq_get = ivpu_hw_40xx_reg_pll_freq_get,
+	.ratio_to_freq = ivpu_hw_40xx_ratio_to_freq,
 	.reg_telemetry_offset_get = ivpu_hw_40xx_reg_telemetry_offset_get,
 	.reg_telemetry_size_get = ivpu_hw_40xx_reg_telemetry_size_get,
 	.reg_telemetry_enable_get = ivpu_hw_40xx_reg_telemetry_enable_get,

drivers/accel/ivpu/ivpu_ipc.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2020-2023 Intel Corporation
+ * Copyright (C) 2020-2024 Intel Corporation
  */
 
 #include <linux/genalloc.h>
@@ -501,7 +501,11 @@ int ivpu_ipc_init(struct ivpu_device *vdev)
 	spin_lock_init(&ipc->cons_lock);
 	INIT_LIST_HEAD(&ipc->cons_list);
 	INIT_LIST_HEAD(&ipc->cb_msg_list);
-	drmm_mutex_init(&vdev->drm, &ipc->lock);
+	ret = drmm_mutex_init(&vdev->drm, &ipc->lock);
+	if (ret) {
+		ivpu_err(vdev, "Failed to initialize ipc->lock, ret %d\n", ret);
+		goto err_free_rx;
+	}
 	ivpu_ipc_reset(vdev);
 	return 0;
 

drivers/accel/ivpu/ivpu_mmu.c

@@ -278,7 +278,7 @@ static const char *ivpu_mmu_event_to_str(u32 cmd)
 	case IVPU_MMU_EVT_F_VMS_FETCH:
 		return "Fetch of VMS caused external abort";
 	default:
-		return "Unknown CMDQ command";
+		return "Unknown event";
 	}
 }
 
@@ -286,15 +286,15 @@ static const char *ivpu_mmu_cmdq_err_to_str(u32 err)
 {
 	switch (err) {
 	case IVPU_MMU_CERROR_NONE:
-		return "No CMDQ Error";
+		return "No error";
 	case IVPU_MMU_CERROR_ILL:
 		return "Illegal command";
 	case IVPU_MMU_CERROR_ABT:
-		return "External abort on CMDQ read";
+		return "External abort on command queue read";
 	case IVPU_MMU_CERROR_ATC_INV_SYNC:
 		return "Sync failed to complete ATS invalidation";
 	default:
-		return "Unknown CMDQ Error";
+		return "Unknown error";
 	}
 }
 

drivers/accel/ivpu/ivpu_pm.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2020-2023 Intel Corporation
+ * Copyright (C) 2020-2024 Intel Corporation
  */
 
 #include <linux/highmem.h>
@@ -58,14 +58,11 @@ static int ivpu_suspend(struct ivpu_device *vdev)
 {
 	int ret;
 
-	/* Save PCI state before powering down as it sometimes gets corrupted if NPU hangs */
-	pci_save_state(to_pci_dev(vdev->drm.dev));
+	ivpu_prepare_for_reset(vdev);
 
 	ret = ivpu_shutdown(vdev);
 	if (ret)
-		ivpu_err(vdev, "Failed to shutdown VPU: %d\n", ret);
-
-	pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
+		ivpu_err(vdev, "Failed to shutdown NPU: %d\n", ret);
 
 	return ret;
 }
@@ -74,10 +71,10 @@ static int ivpu_resume(struct ivpu_device *vdev)
 {
 	int ret;
 
-	pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D0);
+retry:
 	pci_restore_state(to_pci_dev(vdev->drm.dev));
+	pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D0);
 
-retry:
 	ret = ivpu_hw_power_up(vdev);
 	if (ret) {
 		ivpu_err(vdev, "Failed to power up HW: %d\n", ret);
@@ -100,6 +97,7 @@ static int ivpu_resume(struct ivpu_device *vdev)
 	ivpu_mmu_disable(vdev);
 err_power_down:
 	ivpu_hw_power_down(vdev);
+	pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
 
 	if (!ivpu_fw_is_cold_boot(vdev)) {
 		ivpu_pm_prepare_cold_boot(vdev);

drivers/gpu/drm/ast/ast_dp.c

@@ -180,6 +180,7 @@ void ast_dp_set_on_off(struct drm_device *dev, bool on)
 {
 	struct ast_device *ast = to_ast_device(dev);
 	u8 video_on_off = on;
+	u32 i = 0;
 
 	// Video On/Off
 	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xE3, (u8) ~AST_DP_VIDEO_ENABLE, on);
@@ -192,6 +193,8 @@ void ast_dp_set_on_off(struct drm_device *dev, bool on)
 						ASTDP_MIRROR_VIDEO_ENABLE) != video_on_off) {
 			// wait 1 ms
 			mdelay(1);
+			if (++i > 200)
+				break;
 		}
 	}
 }

drivers/gpu/drm/drm_client_modeset.c

@@ -777,6 +777,7 @@ int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width,
 	unsigned int total_modes_count = 0;
 	struct drm_client_offset *offsets;
 	unsigned int connector_count = 0;
+	/* points to modes protected by mode_config.mutex */
 	struct drm_display_mode **modes;
 	struct drm_crtc **crtcs;
 	int i, ret = 0;
@@ -845,7 +846,6 @@ int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width,
 		drm_client_pick_crtcs(client, connectors, connector_count,
 				      crtcs, modes, 0, width, height);
 	}
-	mutex_unlock(&dev->mode_config.mutex);
 
 	drm_client_modeset_release(client);
 
@@ -875,6 +875,7 @@ int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width,
 			modeset->y = offset->y;
 		}
 	}
+	mutex_unlock(&dev->mode_config.mutex);
 
 	mutex_unlock(&client->modeset_mutex);
 out:

drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.c

@@ -66,11 +66,16 @@ of_init(struct nvkm_bios *bios, const char *name)
 	return ERR_PTR(-EINVAL);
 }
 
+static void of_fini(void *p)
+{
+	kfree(p);
+}
+
 const struct nvbios_source
 nvbios_of = {
 	.name = "OpenFirmware",
 	.init = of_init,
-	.fini = (void(*)(void *))kfree,
+	.fini = of_fini,
 	.read = of_read,
 	.size = of_size,
 	.rw = false,

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c

@@ -1112,7 +1112,7 @@ r535_gsp_rpc_set_registry(struct nvkm_gsp *gsp)
 	rpc->numEntries = NV_GSP_REG_NUM_ENTRIES;
 
 	str_offset = offsetof(typeof(*rpc), entries[NV_GSP_REG_NUM_ENTRIES]);
-	strings = (char *)&rpc->entries[NV_GSP_REG_NUM_ENTRIES];
+	strings = (char *)rpc + str_offset;
 	for (i = 0; i < NV_GSP_REG_NUM_ENTRIES; i++) {
 		int name_len = strlen(r535_registry_entries[i].name) + 1;
 

drivers/gpu/drm/panfrost/panfrost_mmu.c

@@ -502,11 +502,18 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
 	mapping_set_unevictable(mapping);
 
 	for (i = page_offset; i < page_offset + NUM_FAULT_PAGES; i++) {
+		/* Can happen if the last fault only partially filled this
+		 * section of the pages array before failing. In that case
+		 * we skip already filled pages.
+		 */
+		if (pages[i])
+			continue;
+
 		pages[i] = shmem_read_mapping_page(mapping, i);
 		if (IS_ERR(pages[i])) {
 			ret = PTR_ERR(pages[i]);
 			pages[i] = NULL;
-			goto err_pages;
+			goto err_unlock;
 		}
 	}
 
@@ -514,7 +521,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
 	ret = sg_alloc_table_from_pages(sgt, pages + page_offset,
 					NUM_FAULT_PAGES, 0, SZ_2M, GFP_KERNEL);
 	if (ret)
-		goto err_pages;
+		goto err_unlock;
 
 	ret = dma_map_sgtable(pfdev->dev, sgt, DMA_BIDIRECTIONAL, 0);
 	if (ret)
@@ -537,8 +544,6 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
 
 err_map:
 	sg_free_table(sgt);
-err_pages:
-	drm_gem_shmem_put_pages(&bo->base);
 err_unlock:
 	dma_resv_unlock(obj->resv);
 err_bo:

drivers/gpu/drm/qxl/qxl_release.c

@@ -58,16 +58,56 @@ static long qxl_fence_wait(struct dma_fence *fence, bool intr,
 			   signed long timeout)
 {
 	struct qxl_device *qdev;
+	struct qxl_release *release;
+	int count = 0, sc = 0;
+	bool have_drawable_releases;
 	unsigned long cur, end = jiffies + timeout;
 
 	qdev = container_of(fence->lock, struct qxl_device, release_lock);
+	release = container_of(fence, struct qxl_release, base);
+	have_drawable_releases = release->type == QXL_RELEASE_DRAWABLE;
+
+retry:
+	sc++;
+
+	if (dma_fence_is_signaled(fence))
+		goto signaled;
+
+	qxl_io_notify_oom(qdev);
+
+	for (count = 0; count < 11; count++) {
+		if (!qxl_queue_garbage_collect(qdev, true))
+			break;
+
+		if (dma_fence_is_signaled(fence))
+			goto signaled;
+	}
 
-	if (!wait_event_timeout(qdev->release_event,
-				(dma_fence_is_signaled(fence) ||
-				 (qxl_io_notify_oom(qdev), 0)),
-				timeout))
+	if (dma_fence_is_signaled(fence))
+		goto signaled;
+
+	if (have_drawable_releases || sc < 4) {
+		if (sc > 2)
+			/* back off */
+			usleep_range(500, 1000);
+
+		if (time_after(jiffies, end))
 			return 0;
 
+		if (have_drawable_releases && sc > 300) {
+			DMA_FENCE_WARN(fence,
+				       "failed to wait on release %llu after spincount %d\n",
+				       fence->context & ~0xf0000000, sc);
+			goto signaled;
+		}
+		goto retry;
+	}
+	/*
+	 * yeah, original sync_obj_wait gave up after 3 spins when
+	 * have_drawable_releases is not set.
+	 */
+
+signaled:
 	cur = jiffies;
 	if (time_after(cur, end))
 		return 0;

drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

@@ -666,11 +666,12 @@ static int vmw_dma_select_mode(struct vmw_private *dev_priv)
 		[vmw_dma_map_populate] = "Caching DMA mappings.",
 		[vmw_dma_map_bind] = "Giving up DMA mappings early."};
 
-	/* TTM currently doesn't fully support SEV encryption. */
-	if (cc_platform_has(CC_ATTR_MEM_ENCRYPT))
-		return -EINVAL;
-
-	if (vmw_force_coherent)
+	/*
+	 * When running with SEV we always want dma mappings, because
+	 * otherwise ttm tt pool pages will bounce through swiotlb running
+	 * out of available space.
+	 */
+	if (vmw_force_coherent || cc_platform_has(CC_ATTR_MEM_ENCRYPT))
 		dev_priv->map_mode = vmw_dma_alloc_coherent;
 	else if (vmw_restrict_iommu)
 		dev_priv->map_mode = vmw_dma_map_bind;

drivers/gpu/host1x/bus.c

@@ -351,11 +351,6 @@ static int host1x_device_uevent(const struct device *dev,
 	return 0;
 }
 
-static int host1x_dma_configure(struct device *dev)
-{
-	return of_dma_configure(dev, dev->of_node, true);
-}
-
 static const struct dev_pm_ops host1x_device_pm_ops = {
 	.suspend = pm_generic_suspend,
 	.resume = pm_generic_resume,
@@ -369,7 +364,6 @@ const struct bus_type host1x_bus_type = {
 	.name = "host1x",
 	.match = host1x_device_match,
 	.uevent = host1x_device_uevent,
-	.dma_configure = host1x_dma_configure,
 	.pm = &host1x_device_pm_ops,
 };
 
@@ -458,8 +452,6 @@ static int host1x_device_add(struct host1x *host1x,
 	device->dev.bus = &host1x_bus_type;
 	device->dev.parent = host1x->dev;
 
-	of_dma_configure(&device->dev, host1x->dev->of_node, true);
-
 	device->dev.dma_parms = &device->dma_parms;
 	dma_set_max_seg_size(&device->dev, UINT_MAX);
 

include/linux/dma-fence.h

@@ -682,4 +682,11 @@ static inline bool dma_fence_is_container(struct dma_fence *fence)
 	return dma_fence_is_array(fence) || dma_fence_is_chain(fence);
 }
 
+#define DMA_FENCE_WARN(f, fmt, args...) \
+	do {								\
+		struct dma_fence *__ff = (f);				\
+		pr_warn("f %llu#%llu: " fmt, __ff->context, __ff->seqno,\
+			 ##args);					\
+	} while (0)
+
 #endif /* __LINUX_DMA_FENCE_H */