Re: [PATCH] drm: Remove defunct dma_buf_kmap stubs

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Am 07.08.2018 um 19:47 schrieb Chris Wilson:
Since commit 09ea0dfbf972 ("dma-buf: make map_atomic and map function
pointers optional"), we no longer need to provide stub no-op functions
as the core now provides them directly.

References: 09ea0dfbf972 ("dma-buf: make map_atomic and map function pointers optional")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>

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


---
  drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c |  2 --
  drivers/gpu/drm/drm_prime.c               | 30 -----------------------
  include/drm/drm_prime.h                   |  3 ---
  3 files changed, 35 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
index 1c5d97f4b4dd..3fdd5688da0b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
@@ -338,8 +338,6 @@ static const struct dma_buf_ops amdgpu_dmabuf_ops = {
  	.unmap_dma_buf = drm_gem_unmap_dma_buf,
  	.release = drm_gem_dmabuf_release,
  	.begin_cpu_access = amdgpu_gem_begin_cpu_access,
-	.map = drm_gem_dmabuf_kmap,
-	.unmap = drm_gem_dmabuf_kunmap,
  	.mmap = drm_gem_dmabuf_mmap,
  	.vmap = drm_gem_dmabuf_vmap,
  	.vunmap = drm_gem_dmabuf_vunmap,
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 186db2e4c57a..e03d3bdaa59b 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -433,34 +433,6 @@ void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
  }
  EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
-/**
- * drm_gem_dmabuf_kmap - map implementation for GEM
- * @dma_buf: buffer to be mapped
- * @page_num: page number within the buffer
- *
- * Not implemented. This can be used as the &dma_buf_ops.map callback.
- */
-void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)
-{
-	return NULL;
-}
-EXPORT_SYMBOL(drm_gem_dmabuf_kmap);
-
-/**
- * drm_gem_dmabuf_kunmap - unmap implementation for GEM
- * @dma_buf: buffer to be unmapped
- * @page_num: page number within the buffer
- * @addr: virtual address of the buffer
- *
- * Not implemented. This can be used as the &dma_buf_ops.unmap callback.
- */
-void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num,
-			   void *addr)
-{
-
-}
-EXPORT_SYMBOL(drm_gem_dmabuf_kunmap);
-
  /**
   * drm_gem_dmabuf_mmap - dma_buf mmap implementation for GEM
   * @dma_buf: buffer to be mapped
@@ -489,8 +461,6 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
  	.map_dma_buf = drm_gem_map_dma_buf,
  	.unmap_dma_buf = drm_gem_unmap_dma_buf,
  	.release = drm_gem_dmabuf_release,
-	.map = drm_gem_dmabuf_kmap,
-	.unmap = drm_gem_dmabuf_kunmap,
  	.mmap = drm_gem_dmabuf_mmap,
  	.vmap = drm_gem_dmabuf_vmap,
  	.vunmap = drm_gem_dmabuf_vunmap,
diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h
index d716d653b096..e2032fbc0f08 100644
--- a/include/drm/drm_prime.h
+++ b/include/drm/drm_prime.h
@@ -93,9 +93,6 @@ void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
  			   enum dma_data_direction dir);
  void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf);
  void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);
-void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num);
-void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num,
-			   void *addr);
  int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);
int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,

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