dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

Message ID 1492561021-9533-1-git-send-email-logang@deltatee.com
State New
Headers show

Commit Message

Logan Gunthorpe April 19, 2017, 12:17 a.m.
Seeing the kunmap_atomic dma_buf_op shares the same name with a macro
in higmem.h, the former can be aliased if any dma-buf user includes
that header.

I'm personally trying to include highmem.h inside scatterlist.h and this
breaks the dma-buf code proper.

Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.

To maintain consistency I've renamed all four of kmap* and kunmap* to be
map* and unmap*. (Even though only kmap_atomic presently conflicts.)

[1] https://www.spinics.net/lists/target-devel/msg15070.html

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
 drivers/dma-buf/dma-buf.c                      | 16 ++++++++--------
 drivers/gpu/drm/armada/armada_gem.c            |  8 ++++----
 drivers/gpu/drm/drm_prime.c                    |  8 ++++----
 drivers/gpu/drm/i915/i915_gem_dmabuf.c         |  8 ++++----
 drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
 drivers/gpu/drm/tegra/gem.c                    |  4 ++--
 drivers/gpu/drm/udl/udl_dmabuf.c               |  8 ++++----
 drivers/gpu/drm/vmwgfx/vmwgfx_prime.c          |  8 ++++----
 drivers/media/v4l2-core/videobuf2-dma-contig.c |  4 ++--
 drivers/media/v4l2-core/videobuf2-dma-sg.c     |  4 ++--
 drivers/media/v4l2-core/videobuf2-vmalloc.c    |  4 ++--
 drivers/staging/android/ion/ion.c              |  8 ++++----
 include/linux/dma-buf.h                        | 22 +++++++++++-----------
 13 files changed, 55 insertions(+), 55 deletions(-)

Comments

kbuild test robot April 19, 2017, 3:08 a.m. | #1
Hi Logan,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.11-rc7 next-20170418]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Logan-Gunthorpe/dma-buf-Rename-dma-ops-to-prevent-conflict-with-kunmap_atomic-macro/20170419-082521
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/tegra/gem.c:115:2: error: unknown field 'map' specified in initializer
     .map = tegra_bo_kmap,
     ^
>> drivers/gpu/drm/tegra/gem.c:116:2: error: unknown field 'unmap' specified in initializer
     .unmap = tegra_bo_kunmap,
     ^
>> drivers/gpu/drm/tegra/gem.c:622:2: error: unknown field 'kmap_atomic' specified in initializer
     .kmap_atomic = tegra_gem_prime_kmap_atomic,
     ^
>> drivers/gpu/drm/tegra/gem.c:622:17: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .kmap_atomic = tegra_gem_prime_kmap_atomic,
                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/tegra/gem.c:622:17: note: (near initialization for 'tegra_gem_prime_dmabuf_ops.begin_cpu_access')
>> drivers/gpu/drm/tegra/gem.c:623:2: error: unknown field 'kunmap_atomic' specified in initializer
     .kunmap_atomic = tegra_gem_prime_kunmap_atomic,
     ^
   drivers/gpu/drm/tegra/gem.c:623:19: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .kunmap_atomic = tegra_gem_prime_kunmap_atomic,
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/tegra/gem.c:623:19: note: (near initialization for 'tegra_gem_prime_dmabuf_ops.end_cpu_access')
>> drivers/gpu/drm/tegra/gem.c:624:2: error: unknown field 'kmap' specified in initializer
     .kmap = tegra_gem_prime_kmap,
     ^
>> drivers/gpu/drm/tegra/gem.c:625:2: error: unknown field 'kunmap' specified in initializer
     .kunmap = tegra_gem_prime_kunmap,
     ^
   cc1: some warnings being treated as errors

vim +/map +115 drivers/gpu/drm/tegra/gem.c

   109		.get = tegra_bo_get,
   110		.put = tegra_bo_put,
   111		.pin = tegra_bo_pin,
   112		.unpin = tegra_bo_unpin,
   113		.mmap = tegra_bo_mmap,
   114		.munmap = tegra_bo_munmap,
 > 115		.map = tegra_bo_kmap,
 > 116		.unmap = tegra_bo_kunmap,
   117	};
   118	
   119	static int tegra_bo_iommu_map(struct tegra_drm *tegra, struct tegra_bo *bo)

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
Sinclair Yeh April 19, 2017, 4:53 p.m. | #2
Minor nits, otherwise the vmwgfx part,
  Reviewed-by: Sinclair Yeh <syeh@vmware.com>

On Tue, Apr 18, 2017 at 06:17:00PM -0600, Logan Gunthorpe wrote:
> Seeing the kunmap_atomic dma_buf_op shares the same name with a macro
                                    s^

> in higmem.h, the former can be aliased if any dma-buf user includes
       h^
> that header.
> 
> I'm personally trying to include highmem.h inside scatterlist.h and this
> breaks the dma-buf code proper.
> 
> Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.
> 
> To maintain consistency I've renamed all four of kmap* and kunmap* to be
> map* and unmap*. (Even though only kmap_atomic presently conflicts.)
> 
> [1] https://urldefense.proofpoint.com/v2/url?u=https-3A__www.spinics.net_lists_target-2Ddevel_msg15070.html&d=DwIBAg&c=uilaK90D4TOVoH58JNXRgQ&r=HaJ2a6NYExoV0cntAYcoqA&m=QP_jolGTC4ofBnHRnAs0tFIXHnVWaTT0AdMyCL9SM64&s=un2hxBL1283iOTtJeJnvyyvtAu1d5Imyh5Q7AzljrfQ&e= 
> 
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
> ---
>  drivers/dma-buf/dma-buf.c                      | 16 ++++++++--------
>  drivers/gpu/drm/armada/armada_gem.c            |  8 ++++----
>  drivers/gpu/drm/drm_prime.c                    |  8 ++++----
>  drivers/gpu/drm/i915/i915_gem_dmabuf.c         |  8 ++++----
>  drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
>  drivers/gpu/drm/tegra/gem.c                    |  4 ++--
>  drivers/gpu/drm/udl/udl_dmabuf.c               |  8 ++++----
>  drivers/gpu/drm/vmwgfx/vmwgfx_prime.c          |  8 ++++----
>  drivers/media/v4l2-core/videobuf2-dma-contig.c |  4 ++--
>  drivers/media/v4l2-core/videobuf2-dma-sg.c     |  4 ++--
>  drivers/media/v4l2-core/videobuf2-vmalloc.c    |  4 ++--
>  drivers/staging/android/ion/ion.c              |  8 ++++----
>  include/linux/dma-buf.h                        | 22 +++++++++++-----------
>  13 files changed, 55 insertions(+), 55 deletions(-)
> 
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 0007b79..7cc2bfe 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -405,8 +405,8 @@ struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
>  			  || !exp_info->ops->map_dma_buf
>  			  || !exp_info->ops->unmap_dma_buf
>  			  || !exp_info->ops->release
> -			  || !exp_info->ops->kmap_atomic
> -			  || !exp_info->ops->kmap
> +			  || !exp_info->ops->map_atomic
> +			  || !exp_info->ops->map
>  			  || !exp_info->ops->mmap)) {
>  		return ERR_PTR(-EINVAL);
>  	}
> @@ -872,7 +872,7 @@ void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
>  {
>  	WARN_ON(!dmabuf);
>  
> -	return dmabuf->ops->kmap_atomic(dmabuf, page_num);
> +	return dmabuf->ops->map_atomic(dmabuf, page_num);
>  }
>  EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
>  
> @@ -889,8 +889,8 @@ void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
>  {
>  	WARN_ON(!dmabuf);
>  
> -	if (dmabuf->ops->kunmap_atomic)
> -		dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
> +	if (dmabuf->ops->unmap_atomic)
> +		dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
>  }
>  EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
>  
> @@ -907,7 +907,7 @@ void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
>  {
>  	WARN_ON(!dmabuf);
>  
> -	return dmabuf->ops->kmap(dmabuf, page_num);
> +	return dmabuf->ops->map(dmabuf, page_num);
>  }
>  EXPORT_SYMBOL_GPL(dma_buf_kmap);
>  
> @@ -924,8 +924,8 @@ void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
>  {
>  	WARN_ON(!dmabuf);
>  
> -	if (dmabuf->ops->kunmap)
> -		dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
> +	if (dmabuf->ops->unmap)
> +		dmabuf->ops->unmap(dmabuf, page_num, vaddr);
>  }
>  EXPORT_SYMBOL_GPL(dma_buf_kunmap);
>  
> diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
> index 1597458..d6c2a5d 100644
> --- a/drivers/gpu/drm/armada/armada_gem.c
> +++ b/drivers/gpu/drm/armada/armada_gem.c
> @@ -529,10 +529,10 @@ static const struct dma_buf_ops armada_gem_prime_dmabuf_ops = {
>  	.map_dma_buf	= armada_gem_prime_map_dma_buf,
>  	.unmap_dma_buf	= armada_gem_prime_unmap_dma_buf,
>  	.release	= drm_gem_dmabuf_release,
> -	.kmap_atomic	= armada_gem_dmabuf_no_kmap,
> -	.kunmap_atomic	= armada_gem_dmabuf_no_kunmap,
> -	.kmap		= armada_gem_dmabuf_no_kmap,
> -	.kunmap		= armada_gem_dmabuf_no_kunmap,
> +	.map_atomic	= armada_gem_dmabuf_no_kmap,
> +	.unmap_atomic	= armada_gem_dmabuf_no_kunmap,
> +	.map		= armada_gem_dmabuf_no_kmap,
> +	.unmap		= armada_gem_dmabuf_no_kunmap,
>  	.mmap		= armada_gem_dmabuf_mmap,
>  };
>  
> diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
> index 25aa455..48ffd25 100644
> --- a/drivers/gpu/drm/drm_prime.c
> +++ b/drivers/gpu/drm/drm_prime.c
> @@ -402,10 +402,10 @@ 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,
> -	.kmap = drm_gem_dmabuf_kmap,
> -	.kmap_atomic = drm_gem_dmabuf_kmap_atomic,
> -	.kunmap = drm_gem_dmabuf_kunmap,
> -	.kunmap_atomic = drm_gem_dmabuf_kunmap_atomic,
> +	.map = drm_gem_dmabuf_kmap,
> +	.map_atomic = drm_gem_dmabuf_kmap_atomic,
> +	.unmap = drm_gem_dmabuf_kunmap,
> +	.unmap_atomic = drm_gem_dmabuf_kunmap_atomic,
>  	.mmap = drm_gem_dmabuf_mmap,
>  	.vmap = drm_gem_dmabuf_vmap,
>  	.vunmap = drm_gem_dmabuf_vunmap,
> diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
> index 29bb801..6f3d674 100644
> --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
> +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
> @@ -200,10 +200,10 @@ static const struct dma_buf_ops i915_dmabuf_ops =  {
>  	.map_dma_buf = i915_gem_map_dma_buf,
>  	.unmap_dma_buf = i915_gem_unmap_dma_buf,
>  	.release = drm_gem_dmabuf_release,
> -	.kmap = i915_gem_dmabuf_kmap,
> -	.kmap_atomic = i915_gem_dmabuf_kmap_atomic,
> -	.kunmap = i915_gem_dmabuf_kunmap,
> -	.kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
> +	.map = i915_gem_dmabuf_kmap,
> +	.map_atomic = i915_gem_dmabuf_kmap_atomic,
> +	.unmap = i915_gem_dmabuf_kunmap,
> +	.unmap_atomic = i915_gem_dmabuf_kunmap_atomic,
>  	.mmap = i915_gem_dmabuf_mmap,
>  	.vmap = i915_gem_dmabuf_vmap,
>  	.vunmap = i915_gem_dmabuf_vunmap,
> diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
> index ee5883f..0dbe030 100644
> --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
> +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
> @@ -160,10 +160,10 @@ static struct dma_buf_ops omap_dmabuf_ops = {
>  	.release = omap_gem_dmabuf_release,
>  	.begin_cpu_access = omap_gem_dmabuf_begin_cpu_access,
>  	.end_cpu_access = omap_gem_dmabuf_end_cpu_access,
> -	.kmap_atomic = omap_gem_dmabuf_kmap_atomic,
> -	.kunmap_atomic = omap_gem_dmabuf_kunmap_atomic,
> -	.kmap = omap_gem_dmabuf_kmap,
> -	.kunmap = omap_gem_dmabuf_kunmap,
> +	.map_atomic = omap_gem_dmabuf_kmap_atomic,
> +	.unmap_atomic = omap_gem_dmabuf_kunmap_atomic,
> +	.map = omap_gem_dmabuf_kmap,
> +	.unmap = omap_gem_dmabuf_kunmap,
>  	.mmap = omap_gem_dmabuf_mmap,
>  };
>  
> diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
> index 17e62ec..1788b14 100644
> --- a/drivers/gpu/drm/tegra/gem.c
> +++ b/drivers/gpu/drm/tegra/gem.c
> @@ -112,8 +112,8 @@ static const struct host1x_bo_ops tegra_bo_ops = {
>  	.unpin = tegra_bo_unpin,
>  	.mmap = tegra_bo_mmap,
>  	.munmap = tegra_bo_munmap,
> -	.kmap = tegra_bo_kmap,
> -	.kunmap = tegra_bo_kunmap,
> +	.map = tegra_bo_kmap,
> +	.unmap = tegra_bo_kunmap,
>  };
>  
>  static int tegra_bo_iommu_map(struct tegra_drm *tegra, struct tegra_bo *bo)
> diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
> index ac90ffd..ed0e636 100644
> --- a/drivers/gpu/drm/udl/udl_dmabuf.c
> +++ b/drivers/gpu/drm/udl/udl_dmabuf.c
> @@ -191,10 +191,10 @@ static struct dma_buf_ops udl_dmabuf_ops = {
>  	.detach			= udl_detach_dma_buf,
>  	.map_dma_buf		= udl_map_dma_buf,
>  	.unmap_dma_buf		= udl_unmap_dma_buf,
> -	.kmap			= udl_dmabuf_kmap,
> -	.kmap_atomic		= udl_dmabuf_kmap_atomic,
> -	.kunmap			= udl_dmabuf_kunmap,
> -	.kunmap_atomic		= udl_dmabuf_kunmap_atomic,
> +	.map			= udl_dmabuf_kmap,
> +	.map_atomic		= udl_dmabuf_kmap_atomic,
> +	.unmap			= udl_dmabuf_kunmap,
> +	.unmap_atomic		= udl_dmabuf_kunmap_atomic,
>  	.mmap			= udl_dmabuf_mmap,
>  	.release		= drm_gem_dmabuf_release,
>  };
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
> index 31fe32d..0d42a46 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
> @@ -108,10 +108,10 @@ const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
>  	.map_dma_buf = vmw_prime_map_dma_buf,
>  	.unmap_dma_buf = vmw_prime_unmap_dma_buf,
>  	.release = NULL,
> -	.kmap = vmw_prime_dmabuf_kmap,
> -	.kmap_atomic = vmw_prime_dmabuf_kmap_atomic,
> -	.kunmap = vmw_prime_dmabuf_kunmap,
> -	.kunmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
> +	.map = vmw_prime_dmabuf_kmap,
> +	.map_atomic = vmw_prime_dmabuf_kmap_atomic,
> +	.unmap = vmw_prime_dmabuf_kunmap,
> +	.unmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
>  	.mmap = vmw_prime_dmabuf_mmap,
>  	.vmap = vmw_prime_dmabuf_vmap,
>  	.vunmap = vmw_prime_dmabuf_vunmap,
> diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
> index fb6a177..2db0413 100644
> --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
> +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
> @@ -356,8 +356,8 @@ static struct dma_buf_ops vb2_dc_dmabuf_ops = {
>  	.detach = vb2_dc_dmabuf_ops_detach,
>  	.map_dma_buf = vb2_dc_dmabuf_ops_map,
>  	.unmap_dma_buf = vb2_dc_dmabuf_ops_unmap,
> -	.kmap = vb2_dc_dmabuf_ops_kmap,
> -	.kmap_atomic = vb2_dc_dmabuf_ops_kmap,
> +	.map = vb2_dc_dmabuf_ops_kmap,
> +	.map_atomic = vb2_dc_dmabuf_ops_kmap,
>  	.vmap = vb2_dc_dmabuf_ops_vmap,
>  	.mmap = vb2_dc_dmabuf_ops_mmap,
>  	.release = vb2_dc_dmabuf_ops_release,
> diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
> index ecff8f4..6fd1343 100644
> --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
> +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
> @@ -504,8 +504,8 @@ static struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
>  	.detach = vb2_dma_sg_dmabuf_ops_detach,
>  	.map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
>  	.unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
> -	.kmap = vb2_dma_sg_dmabuf_ops_kmap,
> -	.kmap_atomic = vb2_dma_sg_dmabuf_ops_kmap,
> +	.map = vb2_dma_sg_dmabuf_ops_kmap,
> +	.map_atomic = vb2_dma_sg_dmabuf_ops_kmap,
>  	.vmap = vb2_dma_sg_dmabuf_ops_vmap,
>  	.mmap = vb2_dma_sg_dmabuf_ops_mmap,
>  	.release = vb2_dma_sg_dmabuf_ops_release,
> diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
> index 3f77814..27d1db3 100644
> --- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
> +++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
> @@ -342,8 +342,8 @@ static struct dma_buf_ops vb2_vmalloc_dmabuf_ops = {
>  	.detach = vb2_vmalloc_dmabuf_ops_detach,
>  	.map_dma_buf = vb2_vmalloc_dmabuf_ops_map,
>  	.unmap_dma_buf = vb2_vmalloc_dmabuf_ops_unmap,
> -	.kmap = vb2_vmalloc_dmabuf_ops_kmap,
> -	.kmap_atomic = vb2_vmalloc_dmabuf_ops_kmap,
> +	.map = vb2_vmalloc_dmabuf_ops_kmap,
> +	.map_atomic = vb2_vmalloc_dmabuf_ops_kmap,
>  	.vmap = vb2_vmalloc_dmabuf_ops_vmap,
>  	.mmap = vb2_vmalloc_dmabuf_ops_mmap,
>  	.release = vb2_vmalloc_dmabuf_ops_release,
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index f45115f..95a7f16 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -1020,10 +1020,10 @@ static const struct dma_buf_ops dma_buf_ops = {
>  	.release = ion_dma_buf_release,
>  	.begin_cpu_access = ion_dma_buf_begin_cpu_access,
>  	.end_cpu_access = ion_dma_buf_end_cpu_access,
> -	.kmap_atomic = ion_dma_buf_kmap,
> -	.kunmap_atomic = ion_dma_buf_kunmap,
> -	.kmap = ion_dma_buf_kmap,
> -	.kunmap = ion_dma_buf_kunmap,
> +	.map_atomic = ion_dma_buf_kmap,
> +	.unmap_atomic = ion_dma_buf_kunmap,
> +	.map = ion_dma_buf_kmap,
> +	.unmap = ion_dma_buf_kunmap,
>  };
>  
>  struct dma_buf *ion_share_dma_buf(struct ion_client *client,
> diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
> index bfb3704..79f27d6 100644
> --- a/include/linux/dma-buf.h
> +++ b/include/linux/dma-buf.h
> @@ -39,13 +39,13 @@ struct dma_buf_attachment;
>  
>  /**
>   * struct dma_buf_ops - operations possible on struct dma_buf
> - * @kmap_atomic: maps a page from the buffer into kernel address
> - * 		 space, users may not block until the subsequent unmap call.
> - * 		 This callback must not sleep.
> - * @kunmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
> - * 		   This Callback must not sleep.
> - * @kmap: maps a page from the buffer into kernel address space.
> - * @kunmap: [optional] unmaps a page from the buffer.
> + * @map_atomic: maps a page from the buffer into kernel address
> + *		space, users may not block until the subsequent unmap call.
> + *		This callback must not sleep.
> + * @unmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
> + *		  This Callback must not sleep.
> + * @map: maps a page from the buffer into kernel address space.
> + * @unmap: [optional] unmaps a page from the buffer.
>   * @vmap: [optional] creates a virtual mapping for the buffer into kernel
>   *	  address space. Same restrictions as for vmap and friends apply.
>   * @vunmap: [optional] unmaps a vmap from the buffer
> @@ -206,10 +206,10 @@ struct dma_buf_ops {
>  	 * to be restarted.
>  	 */
>  	int (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
> -	void *(*kmap_atomic)(struct dma_buf *, unsigned long);
> -	void (*kunmap_atomic)(struct dma_buf *, unsigned long, void *);
> -	void *(*kmap)(struct dma_buf *, unsigned long);
> -	void (*kunmap)(struct dma_buf *, unsigned long, void *);
> +	void *(*map_atomic)(struct dma_buf *, unsigned long);
> +	void (*unmap_atomic)(struct dma_buf *, unsigned long, void *);
> +	void *(*map)(struct dma_buf *, unsigned long);
> +	void (*unmap)(struct dma_buf *, unsigned long, void *);
>  
>  	/**
>  	 * @mmap:
> -- 
> 2.1.4
> 
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Patch

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 0007b79..7cc2bfe 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -405,8 +405,8 @@  struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
 			  || !exp_info->ops->map_dma_buf
 			  || !exp_info->ops->unmap_dma_buf
 			  || !exp_info->ops->release
-			  || !exp_info->ops->kmap_atomic
-			  || !exp_info->ops->kmap
+			  || !exp_info->ops->map_atomic
+			  || !exp_info->ops->map
 			  || !exp_info->ops->mmap)) {
 		return ERR_PTR(-EINVAL);
 	}
@@ -872,7 +872,7 @@  void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
 {
 	WARN_ON(!dmabuf);
 
-	return dmabuf->ops->kmap_atomic(dmabuf, page_num);
+	return dmabuf->ops->map_atomic(dmabuf, page_num);
 }
 EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
 
@@ -889,8 +889,8 @@  void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
 {
 	WARN_ON(!dmabuf);
 
-	if (dmabuf->ops->kunmap_atomic)
-		dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
+	if (dmabuf->ops->unmap_atomic)
+		dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
 }
 EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
 
@@ -907,7 +907,7 @@  void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
 {
 	WARN_ON(!dmabuf);
 
-	return dmabuf->ops->kmap(dmabuf, page_num);
+	return dmabuf->ops->map(dmabuf, page_num);
 }
 EXPORT_SYMBOL_GPL(dma_buf_kmap);
 
@@ -924,8 +924,8 @@  void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
 {
 	WARN_ON(!dmabuf);
 
-	if (dmabuf->ops->kunmap)
-		dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
+	if (dmabuf->ops->unmap)
+		dmabuf->ops->unmap(dmabuf, page_num, vaddr);
 }
 EXPORT_SYMBOL_GPL(dma_buf_kunmap);
 
diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
index 1597458..d6c2a5d 100644
--- a/drivers/gpu/drm/armada/armada_gem.c
+++ b/drivers/gpu/drm/armada/armada_gem.c
@@ -529,10 +529,10 @@  static const struct dma_buf_ops armada_gem_prime_dmabuf_ops = {
 	.map_dma_buf	= armada_gem_prime_map_dma_buf,
 	.unmap_dma_buf	= armada_gem_prime_unmap_dma_buf,
 	.release	= drm_gem_dmabuf_release,
-	.kmap_atomic	= armada_gem_dmabuf_no_kmap,
-	.kunmap_atomic	= armada_gem_dmabuf_no_kunmap,
-	.kmap		= armada_gem_dmabuf_no_kmap,
-	.kunmap		= armada_gem_dmabuf_no_kunmap,
+	.map_atomic	= armada_gem_dmabuf_no_kmap,
+	.unmap_atomic	= armada_gem_dmabuf_no_kunmap,
+	.map		= armada_gem_dmabuf_no_kmap,
+	.unmap		= armada_gem_dmabuf_no_kunmap,
 	.mmap		= armada_gem_dmabuf_mmap,
 };
 
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 25aa455..48ffd25 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -402,10 +402,10 @@  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,
-	.kmap = drm_gem_dmabuf_kmap,
-	.kmap_atomic = drm_gem_dmabuf_kmap_atomic,
-	.kunmap = drm_gem_dmabuf_kunmap,
-	.kunmap_atomic = drm_gem_dmabuf_kunmap_atomic,
+	.map = drm_gem_dmabuf_kmap,
+	.map_atomic = drm_gem_dmabuf_kmap_atomic,
+	.unmap = drm_gem_dmabuf_kunmap,
+	.unmap_atomic = drm_gem_dmabuf_kunmap_atomic,
 	.mmap = drm_gem_dmabuf_mmap,
 	.vmap = drm_gem_dmabuf_vmap,
 	.vunmap = drm_gem_dmabuf_vunmap,
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
index 29bb801..6f3d674 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -200,10 +200,10 @@  static const struct dma_buf_ops i915_dmabuf_ops =  {
 	.map_dma_buf = i915_gem_map_dma_buf,
 	.unmap_dma_buf = i915_gem_unmap_dma_buf,
 	.release = drm_gem_dmabuf_release,
-	.kmap = i915_gem_dmabuf_kmap,
-	.kmap_atomic = i915_gem_dmabuf_kmap_atomic,
-	.kunmap = i915_gem_dmabuf_kunmap,
-	.kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
+	.map = i915_gem_dmabuf_kmap,
+	.map_atomic = i915_gem_dmabuf_kmap_atomic,
+	.unmap = i915_gem_dmabuf_kunmap,
+	.unmap_atomic = i915_gem_dmabuf_kunmap_atomic,
 	.mmap = i915_gem_dmabuf_mmap,
 	.vmap = i915_gem_dmabuf_vmap,
 	.vunmap = i915_gem_dmabuf_vunmap,
diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
index ee5883f..0dbe030 100644
--- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
+++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
@@ -160,10 +160,10 @@  static struct dma_buf_ops omap_dmabuf_ops = {
 	.release = omap_gem_dmabuf_release,
 	.begin_cpu_access = omap_gem_dmabuf_begin_cpu_access,
 	.end_cpu_access = omap_gem_dmabuf_end_cpu_access,
-	.kmap_atomic = omap_gem_dmabuf_kmap_atomic,
-	.kunmap_atomic = omap_gem_dmabuf_kunmap_atomic,
-	.kmap = omap_gem_dmabuf_kmap,
-	.kunmap = omap_gem_dmabuf_kunmap,
+	.map_atomic = omap_gem_dmabuf_kmap_atomic,
+	.unmap_atomic = omap_gem_dmabuf_kunmap_atomic,
+	.map = omap_gem_dmabuf_kmap,
+	.unmap = omap_gem_dmabuf_kunmap,
 	.mmap = omap_gem_dmabuf_mmap,
 };
 
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index 17e62ec..1788b14 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -112,8 +112,8 @@  static const struct host1x_bo_ops tegra_bo_ops = {
 	.unpin = tegra_bo_unpin,
 	.mmap = tegra_bo_mmap,
 	.munmap = tegra_bo_munmap,
-	.kmap = tegra_bo_kmap,
-	.kunmap = tegra_bo_kunmap,
+	.map = tegra_bo_kmap,
+	.unmap = tegra_bo_kunmap,
 };
 
 static int tegra_bo_iommu_map(struct tegra_drm *tegra, struct tegra_bo *bo)
diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
index ac90ffd..ed0e636 100644
--- a/drivers/gpu/drm/udl/udl_dmabuf.c
+++ b/drivers/gpu/drm/udl/udl_dmabuf.c
@@ -191,10 +191,10 @@  static struct dma_buf_ops udl_dmabuf_ops = {
 	.detach			= udl_detach_dma_buf,
 	.map_dma_buf		= udl_map_dma_buf,
 	.unmap_dma_buf		= udl_unmap_dma_buf,
-	.kmap			= udl_dmabuf_kmap,
-	.kmap_atomic		= udl_dmabuf_kmap_atomic,
-	.kunmap			= udl_dmabuf_kunmap,
-	.kunmap_atomic		= udl_dmabuf_kunmap_atomic,
+	.map			= udl_dmabuf_kmap,
+	.map_atomic		= udl_dmabuf_kmap_atomic,
+	.unmap			= udl_dmabuf_kunmap,
+	.unmap_atomic		= udl_dmabuf_kunmap_atomic,
 	.mmap			= udl_dmabuf_mmap,
 	.release		= drm_gem_dmabuf_release,
 };
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
index 31fe32d..0d42a46 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
@@ -108,10 +108,10 @@  const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
 	.map_dma_buf = vmw_prime_map_dma_buf,
 	.unmap_dma_buf = vmw_prime_unmap_dma_buf,
 	.release = NULL,
-	.kmap = vmw_prime_dmabuf_kmap,
-	.kmap_atomic = vmw_prime_dmabuf_kmap_atomic,
-	.kunmap = vmw_prime_dmabuf_kunmap,
-	.kunmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
+	.map = vmw_prime_dmabuf_kmap,
+	.map_atomic = vmw_prime_dmabuf_kmap_atomic,
+	.unmap = vmw_prime_dmabuf_kunmap,
+	.unmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
 	.mmap = vmw_prime_dmabuf_mmap,
 	.vmap = vmw_prime_dmabuf_vmap,
 	.vunmap = vmw_prime_dmabuf_vunmap,
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
index fb6a177..2db0413 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
@@ -356,8 +356,8 @@  static struct dma_buf_ops vb2_dc_dmabuf_ops = {
 	.detach = vb2_dc_dmabuf_ops_detach,
 	.map_dma_buf = vb2_dc_dmabuf_ops_map,
 	.unmap_dma_buf = vb2_dc_dmabuf_ops_unmap,
-	.kmap = vb2_dc_dmabuf_ops_kmap,
-	.kmap_atomic = vb2_dc_dmabuf_ops_kmap,
+	.map = vb2_dc_dmabuf_ops_kmap,
+	.map_atomic = vb2_dc_dmabuf_ops_kmap,
 	.vmap = vb2_dc_dmabuf_ops_vmap,
 	.mmap = vb2_dc_dmabuf_ops_mmap,
 	.release = vb2_dc_dmabuf_ops_release,
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
index ecff8f4..6fd1343 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
@@ -504,8 +504,8 @@  static struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
 	.detach = vb2_dma_sg_dmabuf_ops_detach,
 	.map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
 	.unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
-	.kmap = vb2_dma_sg_dmabuf_ops_kmap,
-	.kmap_atomic = vb2_dma_sg_dmabuf_ops_kmap,
+	.map = vb2_dma_sg_dmabuf_ops_kmap,
+	.map_atomic = vb2_dma_sg_dmabuf_ops_kmap,
 	.vmap = vb2_dma_sg_dmabuf_ops_vmap,
 	.mmap = vb2_dma_sg_dmabuf_ops_mmap,
 	.release = vb2_dma_sg_dmabuf_ops_release,
diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
index 3f77814..27d1db3 100644
--- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
+++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
@@ -342,8 +342,8 @@  static struct dma_buf_ops vb2_vmalloc_dmabuf_ops = {
 	.detach = vb2_vmalloc_dmabuf_ops_detach,
 	.map_dma_buf = vb2_vmalloc_dmabuf_ops_map,
 	.unmap_dma_buf = vb2_vmalloc_dmabuf_ops_unmap,
-	.kmap = vb2_vmalloc_dmabuf_ops_kmap,
-	.kmap_atomic = vb2_vmalloc_dmabuf_ops_kmap,
+	.map = vb2_vmalloc_dmabuf_ops_kmap,
+	.map_atomic = vb2_vmalloc_dmabuf_ops_kmap,
 	.vmap = vb2_vmalloc_dmabuf_ops_vmap,
 	.mmap = vb2_vmalloc_dmabuf_ops_mmap,
 	.release = vb2_vmalloc_dmabuf_ops_release,
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index f45115f..95a7f16 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -1020,10 +1020,10 @@  static const struct dma_buf_ops dma_buf_ops = {
 	.release = ion_dma_buf_release,
 	.begin_cpu_access = ion_dma_buf_begin_cpu_access,
 	.end_cpu_access = ion_dma_buf_end_cpu_access,
-	.kmap_atomic = ion_dma_buf_kmap,
-	.kunmap_atomic = ion_dma_buf_kunmap,
-	.kmap = ion_dma_buf_kmap,
-	.kunmap = ion_dma_buf_kunmap,
+	.map_atomic = ion_dma_buf_kmap,
+	.unmap_atomic = ion_dma_buf_kunmap,
+	.map = ion_dma_buf_kmap,
+	.unmap = ion_dma_buf_kunmap,
 };
 
 struct dma_buf *ion_share_dma_buf(struct ion_client *client,
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index bfb3704..79f27d6 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -39,13 +39,13 @@  struct dma_buf_attachment;
 
 /**
  * struct dma_buf_ops - operations possible on struct dma_buf
- * @kmap_atomic: maps a page from the buffer into kernel address
- * 		 space, users may not block until the subsequent unmap call.
- * 		 This callback must not sleep.
- * @kunmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
- * 		   This Callback must not sleep.
- * @kmap: maps a page from the buffer into kernel address space.
- * @kunmap: [optional] unmaps a page from the buffer.
+ * @map_atomic: maps a page from the buffer into kernel address
+ *		space, users may not block until the subsequent unmap call.
+ *		This callback must not sleep.
+ * @unmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
+ *		  This Callback must not sleep.
+ * @map: maps a page from the buffer into kernel address space.
+ * @unmap: [optional] unmaps a page from the buffer.
  * @vmap: [optional] creates a virtual mapping for the buffer into kernel
  *	  address space. Same restrictions as for vmap and friends apply.
  * @vunmap: [optional] unmaps a vmap from the buffer
@@ -206,10 +206,10 @@  struct dma_buf_ops {
 	 * to be restarted.
 	 */
 	int (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
-	void *(*kmap_atomic)(struct dma_buf *, unsigned long);
-	void (*kunmap_atomic)(struct dma_buf *, unsigned long, void *);
-	void *(*kmap)(struct dma_buf *, unsigned long);
-	void (*kunmap)(struct dma_buf *, unsigned long, void *);
+	void *(*map_atomic)(struct dma_buf *, unsigned long);
+	void (*unmap_atomic)(struct dma_buf *, unsigned long, void *);
+	void *(*map)(struct dma_buf *, unsigned long);
+	void (*unmap)(struct dma_buf *, unsigned long, void *);
 
 	/**
 	 * @mmap: