Several fixes for v3d about memory leak, runtime PM, and locking, and a

Kconfig improvement for ethosu.
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Merge tag 'drm-misc-fixes-2026-04-09' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

Several fixes for v3d about memory leak, runtime PM, and locking, and a
Kconfig improvement for ethosu.

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

From: Maxime Ripard <mripard@redhat.com>
Link: https://patch.msgid.link/20260409-omniscient-tomato-coucal-edbadc@penduick

drivers/accel/ethosu/Kconfig

@@ -4,6 +4,7 @@ config DRM_ACCEL_ARM_ETHOSU
 	tristate "Arm Ethos-U65/U85 NPU"
 	depends on HAS_IOMEM
 	depends on DRM_ACCEL
+	depends on ARM || ARM64 || COMPILE_TEST
 	select DRM_GEM_DMA_HELPER
 	select DRM_SCHED
 	select GENERIC_ALLOCATOR

drivers/gpu/drm/vc4/vc4_bo.c

@@ -738,12 +738,15 @@ static int vc4_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct
 		return -EINVAL;
 	}
 
+	mutex_lock(&bo->madv_lock);
 	if (bo->madv != VC4_MADV_WILLNEED) {
 		DRM_DEBUG("mmapping of %s BO not allowed\n",
 			  bo->madv == VC4_MADV_DONTNEED ?
 			  "purgeable" : "purged");
+		mutex_unlock(&bo->madv_lock);
 		return -EINVAL;
 	}
+	mutex_unlock(&bo->madv_lock);
 
 	return drm_gem_dma_mmap(&bo->base, vma);
 }

drivers/gpu/drm/vc4/vc4_gem.c

@@ -62,6 +62,7 @@ vc4_free_hang_state(struct drm_device *dev, struct vc4_hang_state *state)
 	for (i = 0; i < state->user_state.bo_count; i++)
 		drm_gem_object_put(state->bo[i]);
 
+	kfree(state->bo);
 	kfree(state);
 }
 
@@ -170,10 +171,8 @@ vc4_save_hang_state(struct drm_device *dev)
 	spin_lock_irqsave(&vc4->job_lock, irqflags);
 	exec[0] = vc4_first_bin_job(vc4);
 	exec[1] = vc4_first_render_job(vc4);
-	if (!exec[0] && !exec[1]) {
-		spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-		return;
-	}
+	if (!exec[0] && !exec[1])
+		goto err_free_state;
 
 	/* Get the bos from both binner and renderer into hang state. */
 	state->bo_count = 0;
@@ -190,10 +189,8 @@ vc4_save_hang_state(struct drm_device *dev)
 	kernel_state->bo = kzalloc_objs(*kernel_state->bo, state->bo_count,
 					GFP_ATOMIC);
 
-	if (!kernel_state->bo) {
-		spin_unlock_irqrestore(&vc4->job_lock, irqflags);
-		return;
-	}
+	if (!kernel_state->bo)
+		goto err_free_state;
 
 	k = 0;
 	for (i = 0; i < 2; i++) {
@@ -285,6 +282,12 @@ vc4_save_hang_state(struct drm_device *dev)
 		vc4->hang_state = kernel_state;
 		spin_unlock_irqrestore(&vc4->job_lock, irqflags);
 	}
+
+	return;
+
+err_free_state:
+	spin_unlock_irqrestore(&vc4->job_lock, irqflags);
+	kfree(kernel_state);
 }
 
 static void

drivers/gpu/drm/vc4/vc4_v3d.c

@@ -481,6 +481,7 @@ static int vc4_v3d_bind(struct device *dev, struct device *master, void *data)
 
 	pm_runtime_use_autosuspend(dev);
 	pm_runtime_set_autosuspend_delay(dev, 40); /* a little over 2 frames. */
+	pm_runtime_put_autosuspend(dev);
 
 	return 0;