drm/etnaviv: Add lockdep annotations for context lock

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@sigxcpu.org>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
(cherry picked from commit af2602ac879f2cdc23972dc230e65669b9809518)
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
index 44fbc0a123bf3d8fcb5f8e6a557c07aad4300f70..2de806173b3aaa4c96ac05e9a6bb2c19ffd49c77 100644 (file)
--- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
@@ -124,6 +124,8 @@ 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);
@@ -217,6 +219,8 @@ 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);
 }