Merge tag 'drm-misc-next-2025-09-04' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for v6.18:

Cross-subsystem Changes:

- Update a number of DT bindings for STM32MP25 Arm SoC

Core Changes:

gem:
- Simplify locking for GPUVM

panel-backlight-quirks:
- Add additional quirks for EDID, DMI, brightness

sched:
- Fix race condition in trace code
- Clean up

sysfb:
- Clean up

Driver Changes:

amdgpu:
- Give kernel jobs a unique id for better tracing

amdxdna:
- Improve error reporting

bridge:
- Improve ref counting on bridge management
- adv7511: Provide SPD and HDMI infoframes
- it6505: Replace crypto_shash with sha()
- synopsys: Add support for DW DPTX Controller plus DT bindings

gud:
- Replace simple-KMS pipe with regular atomic helpers

imagination:
- Improve power management
- Add support for TH1520 GPU
- Support Risc-V architectures

ivpu:
- Clean up

nouveau:
- Improve error reporting

panthor:
- Fail VM bind if BO has offset
- Clean up

rcar-du:
- Make number of lanes configurable

rockchip:
- Add support for RK3588 DPTX output

rocket:
- Use kfree() and sizeof() correctly
- Test DMA status
- Clean up

sitronix:
- st7571-i2c: Add support for inverted displays and 2-bit grayscale
- Clean up

stm:
- ltdc: Add support support for STM32MP257F-EV1 plus DT bindings

tidss:
- Convert to kernel's FIELD_ macros

v3d:
- Improve job management and locking

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

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250904090932.GA193997@linux.fritz.box

1 files changed, 14 insertions, 16 deletions

diff --git a/drivers/gpu/drm/drm_gpuvm.c b/drivers/gpu/drm/drm_gpuvm.c
index d6bea8a4fffd..78a1a4f09509 100644
--- a/drivers/gpu/drm/drm_gpuvm.c
+++ b/drivers/gpu/drm/drm_gpuvm.c
@@ -497,8 +497,7 @@
  * DRM GPUVM also does not take care of the locking of the backing
  * &drm_gem_object buffers GPU VA lists and &drm_gpuvm_bo abstractions by
  * itself; drivers are responsible to enforce mutual exclusion using either the
- * GEMs dma_resv lock or alternatively a driver specific external lock. For the
- * latter see also drm_gem_gpuva_set_lock().
+ * GEMs dma_resv lock or the GEMs gpuva.lock mutex.
  *
  * However, DRM GPUVM contains lockdep checks to ensure callers of its API hold
  * the corresponding lock whenever the &drm_gem_objects GPU VA list is accessed
@@ -1582,7 +1581,7 @@ drm_gpuvm_bo_destroy(struct kref *kref)
 	drm_gpuvm_bo_list_del(vm_bo, extobj, lock);
 	drm_gpuvm_bo_list_del(vm_bo, evict, lock);
 
-	drm_gem_gpuva_assert_lock_held(obj);
+	drm_gem_gpuva_assert_lock_held(gpuvm, obj);
 	list_del(&vm_bo->list.entry.gem);
 
 	if (ops && ops->vm_bo_free)
@@ -1603,7 +1602,8 @@ drm_gpuvm_bo_destroy(struct kref *kref)
  * If the reference count drops to zero, the &gpuvm_bo is destroyed, which
  * includes removing it from the GEMs gpuva list. Hence, if a call to this
  * function can potentially let the reference count drop to zero the caller must
- * hold the dma-resv or driver specific GEM gpuva lock.
+ * hold the lock that the GEM uses for its gpuva list (either the GEM's
+ * dma-resv or gpuva.lock mutex).
  *
  * This function may only be called from non-atomic context.
  *
@@ -1627,7 +1627,7 @@ __drm_gpuvm_bo_find(struct drm_gpuvm *gpuvm,
 {
 	struct drm_gpuvm_bo *vm_bo;
 
-	drm_gem_gpuva_assert_lock_held(obj);
+	drm_gem_gpuva_assert_lock_held(gpuvm, obj);
 	drm_gem_for_each_gpuvm_bo(vm_bo, obj)
 		if (vm_bo->vm == gpuvm)
 			return vm_bo;
@@ -1686,7 +1686,7 @@ drm_gpuvm_bo_obtain(struct drm_gpuvm *gpuvm,
 	if (!vm_bo)
 		return ERR_PTR(-ENOMEM);
 
-	drm_gem_gpuva_assert_lock_held(obj);
+	drm_gem_gpuva_assert_lock_held(gpuvm, obj);
 	list_add_tail(&vm_bo->list.entry.gem, &obj->gpuva.list);
 
 	return vm_bo;
@@ -1722,7 +1722,7 @@ drm_gpuvm_bo_obtain_prealloc(struct drm_gpuvm_bo *__vm_bo)
 		return vm_bo;
 	}
 
-	drm_gem_gpuva_assert_lock_held(obj);
+	drm_gem_gpuva_assert_lock_held(gpuvm, obj);
 	list_add_tail(&__vm_bo->list.entry.gem, &obj->gpuva.list);
 
 	return __vm_bo;
@@ -1894,8 +1894,7 @@ EXPORT_SYMBOL_GPL(drm_gpuva_remove);
  * reference of the latter is taken.
  *
  * This function expects the caller to protect the GEM's GPUVA list against
- * concurrent access using either the GEMs dma_resv lock or a driver specific
- * lock set through drm_gem_gpuva_set_lock().
+ * concurrent access using either the GEM's dma-resv or gpuva.lock mutex.
  */
 void
 drm_gpuva_link(struct drm_gpuva *va, struct drm_gpuvm_bo *vm_bo)
@@ -1910,7 +1909,7 @@ drm_gpuva_link(struct drm_gpuva *va, struct drm_gpuvm_bo *vm_bo)
 
 	va->vm_bo = drm_gpuvm_bo_get(vm_bo);
 
-	drm_gem_gpuva_assert_lock_held(obj);
+	drm_gem_gpuva_assert_lock_held(gpuvm, obj);
 	list_add_tail(&va->gem.entry, &vm_bo->list.gpuva);
 }
 EXPORT_SYMBOL_GPL(drm_gpuva_link);
@@ -1930,8 +1929,7 @@ EXPORT_SYMBOL_GPL(drm_gpuva_link);
  * the latter is dropped.
  *
  * This function expects the caller to protect the GEM's GPUVA list against
- * concurrent access using either the GEMs dma_resv lock or a driver specific
- * lock set through drm_gem_gpuva_set_lock().
+ * concurrent access using either the GEM's dma-resv or gpuva.lock mutex.
  */
 void
 drm_gpuva_unlink(struct drm_gpuva *va)
@@ -1942,7 +1940,7 @@ drm_gpuva_unlink(struct drm_gpuva *va)
 	if (unlikely(!obj))
 		return;
 
-	drm_gem_gpuva_assert_lock_held(obj);
+	drm_gem_gpuva_assert_lock_held(va->vm, obj);
 	list_del_init(&va->gem.entry);
 
 	va->vm_bo = NULL;
@@ -2943,8 +2941,8 @@ EXPORT_SYMBOL_GPL(drm_gpuvm_prefetch_ops_create);
  * After the caller finished processing the returned &drm_gpuva_ops, they must
  * be freed with &drm_gpuva_ops_free.
  *
- * It is the callers responsibility to protect the GEMs GPUVA list against
- * concurrent access using the GEMs dma_resv lock.
+ * This function expects the caller to protect the GEM's GPUVA list against
+ * concurrent access using either the GEM's dma-resv or gpuva.lock mutex.
  *
  * Returns: a pointer to the &drm_gpuva_ops on success, an ERR_PTR on failure
  */
@@ -2956,7 +2954,7 @@ drm_gpuvm_bo_unmap_ops_create(struct drm_gpuvm_bo *vm_bo)
 	struct drm_gpuva *va;
 	int ret;
 
-	drm_gem_gpuva_assert_lock_held(vm_bo->obj);
+	drm_gem_gpuva_assert_lock_held(vm_bo->vm, vm_bo->obj);
 
 	ops = kzalloc(sizeof(*ops), GFP_KERNEL);
 	if (!ops)