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Re: [Intel-gfx] [PATCH v2] dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro




Hi Marek,

Thanks!

On 20 April 2017 at 13:36, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> wrote:
> Hi All,
>
> On 2017-04-20 09:51, Daniel Vetter wrote:
>>
>> On Wed, Apr 19, 2017 at 01:36:10PM -0600, Logan Gunthorpe wrote:
>>>
>>> Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
>>> in highmem.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@xxxxxxxxxxxx>
>>> Reviewed-by: Sinclair Yeh <syeh@xxxxxxxxxx>
>>
>> Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
>>
>> Probably simplest if we pull this in through the drm-misc tree for 4.12.
>> Can we have an ack for the v4l side for that pls?
>
>
> For the V4L2/videobuf2:
> Acked-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
>
I will queue it up for drm-misc-fixes so it gets into 4.12.
>
>
>> Thanks, Daniel
Best,
Sumit.

>>>
>>> ---
>>>
>>> Changes since v1:
>>>
>>> - Added the missing tegra driver (noticed by kbuild robot)
>>> - Rebased off of drm-intel-next to get the i915 selftest that is new
>>> - Fixed nits Sinclair pointed out.
>>>
>>>   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/i915/selftests/mock_dmabuf.c   |  8 ++++----
>>>   drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
>>>   drivers/gpu/drm/tegra/gem.c                    |  8 ++++----
>>>   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
>>> +++++++++++-----------
>>>   14 files changed, 61 insertions(+), 61 deletions(-)
>>>
>>> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
>>> index f72aaac..512bdbc 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 9fb65b7..954eb84 100644
>>> --- a/drivers/gpu/drm/drm_prime.c
>>> +++ b/drivers/gpu/drm/drm_prime.c
>>> @@ -403,10 +403,10 @@ 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 11898cd..f225bf6 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/i915/selftests/mock_dmabuf.c
>>> b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>> index 99da8f4..302f7d1 100644
>>> --- a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>> +++ b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>> @@ -129,10 +129,10 @@ static const struct dma_buf_ops mock_dmabuf_ops =
>>> {
>>>         .map_dma_buf = mock_map_dma_buf,
>>>         .unmap_dma_buf = mock_unmap_dma_buf,
>>>         .release = mock_dmabuf_release,
>>> -       .kmap = mock_dmabuf_kmap,
>>> -       .kmap_atomic = mock_dmabuf_kmap_atomic,
>>> -       .kunmap = mock_dmabuf_kunmap,
>>> -       .kunmap_atomic = mock_dmabuf_kunmap_atomic,
>>> +       .map = mock_dmabuf_kmap,
>>> +       .map_atomic = mock_dmabuf_kmap_atomic,
>>> +       .unmap = mock_dmabuf_kunmap,
>>> +       .unmap_atomic = mock_dmabuf_kunmap_atomic,
>>>         .mmap = mock_dmabuf_mmap,
>>>         .vmap = mock_dmabuf_vmap,
>>>         .vunmap = mock_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..8672f5d 100644
>>> --- a/drivers/gpu/drm/tegra/gem.c
>>> +++ b/drivers/gpu/drm/tegra/gem.c
>>> @@ -619,10 +619,10 @@ static const struct dma_buf_ops
>>> tegra_gem_prime_dmabuf_ops = {
>>>         .map_dma_buf = tegra_gem_prime_map_dma_buf,
>>>         .unmap_dma_buf = tegra_gem_prime_unmap_dma_buf,
>>>         .release = tegra_gem_prime_release,
>>> -       .kmap_atomic = tegra_gem_prime_kmap_atomic,
>>> -       .kunmap_atomic = tegra_gem_prime_kunmap_atomic,
>>> -       .kmap = tegra_gem_prime_kmap,
>>> -       .kunmap = tegra_gem_prime_kunmap,
>>> +       .map_atomic = tegra_gem_prime_kmap_atomic,
>>> +       .unmap_atomic = tegra_gem_prime_kunmap_atomic,
>>> +       .map = tegra_gem_prime_kmap,
>>> +       .unmap = tegra_gem_prime_kunmap,
>>>         .mmap = tegra_gem_prime_mmap,
>>>         .vmap = tegra_gem_prime_vmap,
>>>         .vunmap = tegra_gem_prime_vunmap,
>>> 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:
>
>
> Best regards
> --
> Marek Szyprowski, PhD
> Samsung R&D Institute Poland
>



-- 
Thanks and regards,

Sumit Semwal
Linaro Mobile Group - Kernel Team Lead
Linaro.org │ Open source software for ARM SoCs