More fixes for the new imagination drier, a DT node refcount fix for the

new aux bridge driver and a missing header fix for the LUT management
 code.
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Merge tag 'drm-misc-next-fixes-2023-12-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

More fixes for the new imagination drier, a DT node refcount fix for the
new aux bridge driver and a missing header fix for the LUT management
code.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/42dw6ok2g5kz5xljrw7t6lzrgafhwslgw3j4rbaaivluv24vkj@k4smx5r3y2gh

drivers/gpu/drm/bridge/aux-bridge.c

@@ -6,6 +6,7 @@
  */
 #include <linux/auxiliary_bus.h>
 #include <linux/module.h>
+#include <linux/of.h>
 
 #include <drm/drm_bridge.h>
 #include <drm/bridge/aux-bridge.h>
@@ -57,7 +58,7 @@ int drm_aux_bridge_register(struct device *parent)
 	adev->id = ret;
 	adev->name = "aux_bridge";
 	adev->dev.parent = parent;
-	adev->dev.of_node = parent->of_node;
+	adev->dev.of_node = of_node_get(parent->of_node);
 	adev->dev.release = drm_aux_bridge_release;
 
 	ret = auxiliary_device_init(adev);

drivers/gpu/drm/bridge/aux-hpd-bridge.c

@@ -68,9 +68,9 @@ struct device *drm_dp_hpd_bridge_register(struct device *parent,
 	adev->id = ret;
 	adev->name = "dp_hpd_bridge";
 	adev->dev.parent = parent;
-	adev->dev.of_node = parent->of_node;
+	adev->dev.of_node = of_node_get(parent->of_node);
 	adev->dev.release = drm_aux_hpd_bridge_release;
-	adev->dev.platform_data = np;
+	adev->dev.platform_data = of_node_get(np);
 
 	ret = auxiliary_device_init(adev);
 	if (ret) {

drivers/gpu/drm/imagination/pvr_hwrt.c

@@ -458,7 +458,7 @@ pvr_hwrt_dataset_create(struct pvr_file *pvr_file,
 			struct drm_pvr_ioctl_create_hwrt_dataset_args *args)
 {
 	struct pvr_hwrt_dataset *hwrt;
-	int err;
+	int err, i = 0;
 
 	/* Create and fill out the kernel structure */
 	hwrt = kzalloc(sizeof(*hwrt), GFP_KERNEL);
@@ -466,35 +466,36 @@ pvr_hwrt_dataset_create(struct pvr_file *pvr_file,
 	if (!hwrt)
 		return ERR_PTR(-ENOMEM);
 
-	kref_init(&hwrt->ref_count);
-
 	err = hwrt_init_kernel_structure(pvr_file, args, hwrt);
 	if (err < 0)
 		goto err_free;
 
 	err = hwrt_init_common_fw_structure(pvr_file, args, hwrt);
 	if (err < 0)
-		goto err_free;
+		goto err_fini_kernel_structure;
 
-	for (int i = 0; i < ARRAY_SIZE(hwrt->data); i++) {
+	for (; i < ARRAY_SIZE(hwrt->data); i++) {
 		err = hwrt_data_init_fw_structure(pvr_file, hwrt, args,
 						  &args->rt_data_args[i],
 						  &hwrt->data[i]);
-		if (err < 0) {
-			i--;
-			/* Destroy already created structures. */
-			for (; i >= 0; i--)
-				hwrt_data_fini_fw_structure(hwrt, i);
-			goto err_free;
-		}
+		if (err < 0)
+			goto err_fini_data_structures;
 
 		hwrt->data[i].hwrt_dataset = hwrt;
 	}
 
+	kref_init(&hwrt->ref_count);
 	return hwrt;
 
+err_fini_data_structures:
+	while (--i >= 0)
+		hwrt_data_fini_fw_structure(hwrt, i);
+
+err_fini_kernel_structure:
+	hwrt_fini_kernel_structure(hwrt);
+
 err_free:
-	pvr_hwrt_dataset_put(hwrt);
+	kfree(hwrt);
 
 	return ERR_PTR(err);
 }

drivers/gpu/drm/imagination/pvr_vm.c

@@ -556,23 +556,12 @@ pvr_vm_create_context(struct pvr_device *pvr_dev, bool is_userspace_context)
 	if (!vm_ctx)
 		return ERR_PTR(-ENOMEM);
 
-	drm_gem_private_object_init(&pvr_dev->base, &vm_ctx->dummy_gem, 0);
-
 	vm_ctx->pvr_dev = pvr_dev;
-	kref_init(&vm_ctx->ref_count);
-	mutex_init(&vm_ctx->lock);
-
-	drm_gpuvm_init(&vm_ctx->gpuvm_mgr,
-		       is_userspace_context ? "PowerVR-user-VM" : "PowerVR-FW-VM",
-		       0, &pvr_dev->base, &vm_ctx->dummy_gem,
-		       0, 1ULL << device_addr_bits, 0, 0, &pvr_vm_gpuva_ops);
 
 	vm_ctx->mmu_ctx = pvr_mmu_context_create(pvr_dev);
-	err = PTR_ERR_OR_ZERO(&vm_ctx->mmu_ctx);
-	if (err) {
-		vm_ctx->mmu_ctx = NULL;
-		goto err_put_ctx;
-	}
+	err = PTR_ERR_OR_ZERO(vm_ctx->mmu_ctx);
+	if (err)
+		goto err_free;
 
 	if (is_userspace_context) {
 		err = pvr_fw_object_create(pvr_dev, sizeof(struct rogue_fwif_fwmemcontext),
@@ -583,13 +572,22 @@ pvr_vm_create_context(struct pvr_device *pvr_dev, bool is_userspace_context)
 			goto err_page_table_destroy;
 	}
 
+	drm_gem_private_object_init(&pvr_dev->base, &vm_ctx->dummy_gem, 0);
+	drm_gpuvm_init(&vm_ctx->gpuvm_mgr,
+		       is_userspace_context ? "PowerVR-user-VM" : "PowerVR-FW-VM",
+		       0, &pvr_dev->base, &vm_ctx->dummy_gem,
+		       0, 1ULL << device_addr_bits, 0, 0, &pvr_vm_gpuva_ops);
+
+	mutex_init(&vm_ctx->lock);
+	kref_init(&vm_ctx->ref_count);
+
 	return vm_ctx;
 
 err_page_table_destroy:
 	pvr_mmu_context_destroy(vm_ctx->mmu_ctx);
 
-err_put_ctx:
-	pvr_vm_context_put(vm_ctx);
+err_free:
+	kfree(vm_ctx);
 
 	return ERR_PTR(err);
 }

drivers/gpu/drm/imagination/pvr_vm_mips.c

@@ -152,8 +152,8 @@ pvr_vm_mips_map(struct pvr_device *pvr_dev, struct pvr_fw_object *fw_obj)
 	u64 end;
 	u32 cache_policy;
 	u32 pte_flags;
-	u32 start_pfn;
-	u32 end_pfn;
+	s32 start_pfn;
+	s32 end_pfn;
 	s32 pfn;
 	int err;
 
@@ -201,7 +201,7 @@ pvr_vm_mips_map(struct pvr_device *pvr_dev, struct pvr_fw_object *fw_obj)
 	return 0;
 
 err_unmap_pages:
-	for (; pfn >= start_pfn; pfn--)
+	while (--pfn >= start_pfn)
 		WRITE_ONCE(mips_data->pt[pfn], 0);
 
 	pvr_mmu_flush_request_all(pvr_dev);

include/drm/drm_color_mgmt.h

@@ -24,6 +24,7 @@
 #define __DRM_COLOR_MGMT_H__
 
 #include <linux/ctype.h>
+#include <linux/math64.h>
 #include <drm/drm_property.h>
 
 struct drm_crtc;