Re: [PATCH v4 02/10] drm/cma-helper: Remove empty drm_gem_cma_prime_vunmap()

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Am 15.10.20 um 14:37 schrieb Thomas Zimmermann:
The function drm_gem_cma_prime_vunmap() is empty. Remove it before
changing the interface to use struct drm_buf_map.

Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>

Reviewed-by: Christian König <christian.koenig@xxxxxxx>

---
  drivers/gpu/drm/drm_gem_cma_helper.c | 17 -----------------
  drivers/gpu/drm/vc4/vc4_bo.c         |  1 -
  include/drm/drm_gem_cma_helper.h     |  1 -
  3 files changed, 19 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
index 2165633c9b9e..d527485ea0b7 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -537,23 +537,6 @@ void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj)
  }
  EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap);
-/**
- * drm_gem_cma_prime_vunmap - unmap a CMA GEM object from the kernel's virtual
- *     address space
- * @obj: GEM object
- * @vaddr: kernel virtual address where the CMA GEM object was mapped
- *
- * This function removes a buffer exported via DRM PRIME from the kernel's
- * virtual address space. This is a no-op because CMA buffers cannot be
- * unmapped from kernel space. Drivers using the CMA helpers should set this
- * as their &drm_gem_object_funcs.vunmap callback.
- */
-void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
-{
-	/* Nothing to do */
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vunmap);
-
  static const struct drm_gem_object_funcs drm_gem_cma_default_funcs = {
  	.free = drm_gem_cma_free_object,
  	.print_info = drm_gem_cma_print_info,
diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
index f432278173cd..557f0d1e6437 100644
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -387,7 +387,6 @@ static const struct drm_gem_object_funcs vc4_gem_object_funcs = {
  	.export = vc4_prime_export,
  	.get_sg_table = drm_gem_cma_prime_get_sg_table,
  	.vmap = vc4_prime_vmap,
-	.vunmap = drm_gem_cma_prime_vunmap,
  	.vm_ops = &vc4_vm_ops,
  };
diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h
index 2bfa2502607a..a064b0d1c480 100644
--- a/include/drm/drm_gem_cma_helper.h
+++ b/include/drm/drm_gem_cma_helper.h
@@ -104,7 +104,6 @@ drm_gem_cma_prime_import_sg_table(struct drm_device *dev,
  int drm_gem_cma_prime_mmap(struct drm_gem_object *obj,
  			   struct vm_area_struct *vma);
  void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj);
-void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
struct drm_gem_object *
  drm_gem_cma_create_object_default_funcs(struct drm_device *dev, size_t size);




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