[RFC PATCH 1/2] drm: etnaviv: Add lockdep annotations for context lock

[Guido Günther]

etnaviv_iommu_find_iova has it so etnaviv_iommu_insert_exact and
lockdep_assert_held should have it as well.

Signed-off-by: Guido Günther <agx at sigxcpu.org>
---
 drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
index 3607d348c298..cd599ac04663 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
@@ -131,6 +131,8 @@ static void etnaviv_iommu_remove_mapping(struct etnaviv_iommu_context *context,
 {
 	struct etnaviv_gem_object *etnaviv_obj = mapping->object;
 
+	lockdep_assert_held(&context->lock);
+
 	etnaviv_iommu_unmap(context, mapping->vram_node.start,
 			    etnaviv_obj->sgt, etnaviv_obj->base.size);
 	drm_mm_remove_node(&mapping->vram_node);
@@ -223,6 +225,8 @@ static int etnaviv_iommu_find_iova(struct etnaviv_iommu_context *context,
 static int etnaviv_iommu_insert_exact(struct etnaviv_iommu_context *context,
 		   struct drm_mm_node *node, size_t size, u64 va)
 {
+	lockdep_assert_held(&context->lock);
+
 	return drm_mm_insert_node_in_range(&context->mm, node, size, 0, 0, va,
 					   va + size, DRM_MM_INSERT_LOWEST);
 }
-- 
2.28.0