diff mbox series

[RFC,03/24] drm/gpuvm: Remove bogus lock assert

Message ID 20241207161651.410556-4-robdclark@gmail.com
State New
Headers show
Series drm/msm: sparse / "VM_BIND" support | expand

Commit Message

Rob Clark Dec. 7, 2024, 4:15 p.m. UTC 
From: Rob Clark <robdclark@chromium.org>

If the driver is using an external mutex to synchronize vm access, it
doesn't need to hold vm->r_obj->resv.  And if the driver is already
holding obj->resv, then needing to pointlessly grab vm->r_obj->resv will
be seen by lockdep as nested locking.

Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/drm_gpuvm.c | 3 ---
 1 file changed, 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/drm_gpuvm.c b/drivers/gpu/drm/drm_gpuvm.c
index 1e89a98caad4..c9bf18119a86 100644
--- a/drivers/gpu/drm/drm_gpuvm.c
+++ b/drivers/gpu/drm/drm_gpuvm.c
@@ -1505,9 +1505,6 @@  drm_gpuvm_bo_destroy(struct kref *kref)
 	struct drm_gem_object *obj = vm_bo->obj;
 	bool lock = !drm_gpuvm_resv_protected(gpuvm);
 
-	if (!lock)
-		drm_gpuvm_resv_assert_held(gpuvm);
-
 	drm_gpuvm_bo_list_del(vm_bo, extobj, lock);
 	drm_gpuvm_bo_list_del(vm_bo, evict, lock);