[PATCH 2/5] dma-buf: remove kmap_atomic interface

Christian König christian.koenig at amd.com
Wed Jun 20 06:22:19 UTC 2018


Am 20.06.2018 um 08:10 schrieb Sumit Semwal:
> Hi Christian,
> On Tue, 19 Jun 2018 at 20:17, Christian König <christian.koenig at amd.com> wrote:
>> Am 18.06.2018 um 10:18 schrieb Daniel Vetter:
>>> On Fri, Jun 01, 2018 at 02:00:17PM +0200, Christian König wrote:
>>>> Neither used nor correctly implemented anywhere. Just completely remove
>>>> the interface.
>>>>
>>>> Signed-off-by: Christian König <christian.koenig at amd.com>
>>> I wonder whether we can nuke the normal kmap stuff too ... everyone seems
>>> to want/use the vmap stuff for kernel-internal mapping needs.
>>>
>>> Anyway, this looks good.
> Hope am not too late (was out of office for some time) - this looks ok
> to me, please feel free to add my
> Acked-by: Sumit Semwal <sumit.semwal at linaro.org>

No, you're not to late. I was actually holding back a bit because of 
missing Ack's.

Thanks for the response,
Christian.

>
>>>> ---
>>>>    drivers/dma-buf/dma-buf.c                          | 44 ----------------------
>>>>    drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c          |  2 -
>>>>    drivers/gpu/drm/armada/armada_gem.c                |  2 -
>>>>    drivers/gpu/drm/drm_prime.c                        | 26 -------------
>>>>    drivers/gpu/drm/i915/i915_gem_dmabuf.c             | 11 ------
>>>>    drivers/gpu/drm/i915/selftests/mock_dmabuf.c       |  2 -
>>>>    drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c          |  2 -
>>>>    drivers/gpu/drm/tegra/gem.c                        | 14 -------
>>>>    drivers/gpu/drm/udl/udl_dmabuf.c                   | 17 ---------
>>>>    drivers/gpu/drm/vmwgfx/vmwgfx_prime.c              | 13 -------
>>>>    .../media/common/videobuf2/videobuf2-dma-contig.c  |  1 -
>>>>    drivers/media/common/videobuf2/videobuf2-dma-sg.c  |  1 -
>>>>    drivers/media/common/videobuf2/videobuf2-vmalloc.c |  1 -
>>>>    drivers/staging/android/ion/ion.c                  |  2 -
>>>>    drivers/tee/tee_shm.c                              |  6 ---
>>>>    include/drm/drm_prime.h                            |  4 --
>>>>    include/linux/dma-buf.h                            |  4 --
>>>>    17 files changed, 152 deletions(-)
>>>>
>>>> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
>>>> index e99a8d19991b..e4c657d9fad7 100644
>>>> --- a/drivers/dma-buf/dma-buf.c
>>>> +++ b/drivers/dma-buf/dma-buf.c
>>>> @@ -405,7 +405,6 @@ 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->map_atomic
>>>>                         || !exp_info->ops->map
>>>>                         || !exp_info->ops->mmap)) {
>>>>               return ERR_PTR(-EINVAL);
>>>> @@ -687,14 +686,6 @@ EXPORT_SYMBOL_GPL(dma_buf_unmap_attachment);
>>>>     *      void \*dma_buf_kmap(struct dma_buf \*, unsigned long);
>>>>     *      void dma_buf_kunmap(struct dma_buf \*, unsigned long, void \*);
>>>>     *
>>>> - *   There are also atomic variants of these interfaces. Like for kmap they
>>>> - *   facilitate non-blocking fast-paths. Neither the importer nor the exporter
>>>> - *   (in the callback) is allowed to block when using these.
>>>> - *
>>>> - *   Interfaces::
>>>> - *      void \*dma_buf_kmap_atomic(struct dma_buf \*, unsigned long);
>>>> - *      void dma_buf_kunmap_atomic(struct dma_buf \*, unsigned long, void \*);
>>>> - *
>>>>     *   For importers all the restrictions of using kmap apply, like the limited
>>>>     *   supply of kmap_atomic slots. Hence an importer shall only hold onto at
>>>>     *   max 2 atomic dma_buf kmaps at the same time (in any given process context).
>>> This is also about atomic kmap ...
>>>
>>> And the subsequent language around "Note that these calls need to always
>>> succeed." is also not true, might be good to update that stating that kmap
>>> is optional (like we say already for vmap).
>>>
>>> With those docs nits addressed:
>>>
>>> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>> I've fixed up patch #1 and #2 and added your Reviewed-by tag.
>>
>> Since I finally had time to install dim do you have any objections that
>> I now run "dim push drm-misc-next" with those two applied?
>>
>> Regards,
>> Christian.
>>
>>>> @@ -859,41 +850,6 @@ int dma_buf_end_cpu_access(struct dma_buf *dmabuf,
>>>>    }
>>>>    EXPORT_SYMBOL_GPL(dma_buf_end_cpu_access);
>>>>
>>>> -/**
>>>> - * dma_buf_kmap_atomic - Map a page of the buffer object into kernel address
>>>> - * space. The same restrictions as for kmap_atomic and friends apply.
>>>> - * @dmabuf: [in]    buffer to map page from.
>>>> - * @page_num:       [in]    page in PAGE_SIZE units to map.
>>>> - *
>>>> - * This call must always succeed, any necessary preparations that might fail
>>>> - * need to be done in begin_cpu_access.
>>>> - */
>>>> -void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
>>>> -{
>>>> -    WARN_ON(!dmabuf);
>>>> -
>>>> -    return dmabuf->ops->map_atomic(dmabuf, page_num);
>>>> -}
>>>> -EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
>>>> -
>>>> -/**
>>>> - * dma_buf_kunmap_atomic - Unmap a page obtained by dma_buf_kmap_atomic.
>>>> - * @dmabuf: [in]    buffer to unmap page from.
>>>> - * @page_num:       [in]    page in PAGE_SIZE units to unmap.
>>>> - * @vaddr:  [in]    kernel space pointer obtained from dma_buf_kmap_atomic.
>>>> - *
>>>> - * This call must always succeed.
>>>> - */
>>>> -void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
>>>> -                       void *vaddr)
>>>> -{
>>>> -    WARN_ON(!dmabuf);
>>>> -
>>>> -    if (dmabuf->ops->unmap_atomic)
>>>> -            dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
>>>> -}
>>>> -EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
>>>> -
>>>>    /**
>>>>     * dma_buf_kmap - Map a page of the buffer object into kernel address space. The
>>>>     * same restrictions as for kmap and friends apply.
>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
>>>> index f1500f1ec0f5..a156b3891a3f 100644
>>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
>>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
>>>> @@ -244,9 +244,7 @@ static const struct dma_buf_ops amdgpu_dmabuf_ops = {
>>>>       .release = drm_gem_dmabuf_release,
>>>>       .begin_cpu_access = amdgpu_gem_begin_cpu_access,
>>>>       .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/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
>>>> index a97f509743a5..3fb37c75c065 100644
>>>> --- a/drivers/gpu/drm/armada/armada_gem.c
>>>> +++ b/drivers/gpu/drm/armada/armada_gem.c
>>>> @@ -490,8 +490,6 @@ 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,
>>>> -    .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 4a3a232fea67..b28fa8f44c8b 100644
>>>> --- a/drivers/gpu/drm/drm_prime.c
>>>> +++ b/drivers/gpu/drm/drm_prime.c
>>>> @@ -426,30 +426,6 @@ void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
>>>>    }
>>>>    EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
>>>>
>>>> -/**
>>>> - * drm_gem_dmabuf_kmap_atomic - map_atomic implementation for GEM
>>>> - *
>>>> - * Not implemented. This can be used as the &dma_buf_ops.map_atomic callback.
>>>> - */
>>>> -void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
>>>> -                             unsigned long page_num)
>>>> -{
>>>> -    return NULL;
>>>> -}
>>>> -EXPORT_SYMBOL(drm_gem_dmabuf_kmap_atomic);
>>>> -
>>>> -/**
>>>> - * drm_gem_dmabuf_kunmap_atomic - unmap_atomic implementation for GEM
>>>> - *
>>>> - * Not implemented. This can be used as the &dma_buf_ops.unmap_atomic callback.
>>>> - */
>>>> -void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
>>>> -                              unsigned long page_num, void *addr)
>>>> -{
>>>> -
>>>> -}
>>>> -EXPORT_SYMBOL(drm_gem_dmabuf_kunmap_atomic);
>>>> -
>>>>    /**
>>>>     * drm_gem_dmabuf_kmap - map implementation for GEM
>>>>     *
>>>> @@ -502,9 +478,7 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
>>>>       .unmap_dma_buf = drm_gem_unmap_dma_buf,
>>>>       .release = drm_gem_dmabuf_release,
>>>>       .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 69a7aec49e84..82e2ca17a441 100644
>>>> --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>>>> +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>>>> @@ -111,15 +111,6 @@ static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
>>>>       i915_gem_object_unpin_map(obj);
>>>>    }
>>>>
>>>> -static void *i915_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf, unsigned long page_num)
>>>> -{
>>>> -    return NULL;
>>>> -}
>>>> -
>>>> -static void i915_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
>>>> -{
>>>> -
>>>> -}
>>>>    static void *i915_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)
>>>>    {
>>>>       struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
>>>> @@ -225,9 +216,7 @@ static const struct dma_buf_ops i915_dmabuf_ops =  {
>>>>       .unmap_dma_buf = i915_gem_unmap_dma_buf,
>>>>       .release = drm_gem_dmabuf_release,
>>>>       .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 302f7d103635..f81fda8ea45e 100644
>>>> --- a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>>> +++ b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>>> @@ -130,9 +130,7 @@ static const struct dma_buf_ops mock_dmabuf_ops =  {
>>>>       .unmap_dma_buf = mock_unmap_dma_buf,
>>>>       .release = mock_dmabuf_release,
>>>>       .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 8e41d649e248..1a073f9b2834 100644
>>>> --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>>>> +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>>>> @@ -148,8 +148,6 @@ static const struct dma_buf_ops omap_dmabuf_ops = {
>>>>       .release = drm_gem_dmabuf_release,
>>>>       .begin_cpu_access = omap_gem_dmabuf_begin_cpu_access,
>>>>       .end_cpu_access = omap_gem_dmabuf_end_cpu_access,
>>>> -    .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 8b0b4ff64bb4..d7661702c11c 100644
>>>> --- a/drivers/gpu/drm/tegra/gem.c
>>>> +++ b/drivers/gpu/drm/tegra/gem.c
>>>> @@ -596,18 +596,6 @@ static int tegra_gem_prime_end_cpu_access(struct dma_buf *buf,
>>>>       return 0;
>>>>    }
>>>>
>>>> -static void *tegra_gem_prime_kmap_atomic(struct dma_buf *buf,
>>>> -                                     unsigned long page)
>>>> -{
>>>> -    return NULL;
>>>> -}
>>>> -
>>>> -static void tegra_gem_prime_kunmap_atomic(struct dma_buf *buf,
>>>> -                                      unsigned long page,
>>>> -                                      void *addr)
>>>> -{
>>>> -}
>>>> -
>>>>    static void *tegra_gem_prime_kmap(struct dma_buf *buf, unsigned long page)
>>>>    {
>>>>       return NULL;
>>>> @@ -648,8 +636,6 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = {
>>>>       .release = tegra_gem_prime_release,
>>>>       .begin_cpu_access = tegra_gem_prime_begin_cpu_access,
>>>>       .end_cpu_access = tegra_gem_prime_end_cpu_access,
>>>> -    .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,
>>>> diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
>>>> index 5fdc8bdc2026..ae7225dedc30 100644
>>>> --- a/drivers/gpu/drm/udl/udl_dmabuf.c
>>>> +++ b/drivers/gpu/drm/udl/udl_dmabuf.c
>>>> @@ -156,27 +156,12 @@ static void *udl_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)
>>>>       return NULL;
>>>>    }
>>>>
>>>> -static void *udl_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
>>>> -                                unsigned long page_num)
>>>> -{
>>>> -    /* TODO */
>>>> -
>>>> -    return NULL;
>>>> -}
>>>> -
>>>>    static void udl_dmabuf_kunmap(struct dma_buf *dma_buf,
>>>>                             unsigned long page_num, void *addr)
>>>>    {
>>>>       /* TODO */
>>>>    }
>>>>
>>>> -static void udl_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
>>>> -                                 unsigned long page_num,
>>>> -                                 void *addr)
>>>> -{
>>>> -    /* TODO */
>>>> -}
>>>> -
>>>>    static int udl_dmabuf_mmap(struct dma_buf *dma_buf,
>>>>                          struct vm_area_struct *vma)
>>>>    {
>>>> @@ -191,9 +176,7 @@ static const struct dma_buf_ops udl_dmabuf_ops = {
>>>>       .map_dma_buf            = udl_map_dma_buf,
>>>>       .unmap_dma_buf          = udl_unmap_dma_buf,
>>>>       .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 fbffb37ccf42..373bc6da2f84 100644
>>>> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>>>> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>>>> @@ -71,17 +71,6 @@ static void vmw_prime_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
>>>>    {
>>>>    }
>>>>
>>>> -static void *vmw_prime_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
>>>> -            unsigned long page_num)
>>>> -{
>>>> -    return NULL;
>>>> -}
>>>> -
>>>> -static void vmw_prime_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
>>>> -            unsigned long page_num, void *addr)
>>>> -{
>>>> -
>>>> -}
>>>>    static void *vmw_prime_dmabuf_kmap(struct dma_buf *dma_buf,
>>>>               unsigned long page_num)
>>>>    {
>>>> @@ -108,9 +97,7 @@ const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
>>>>       .unmap_dma_buf = vmw_prime_unmap_dma_buf,
>>>>       .release = NULL,
>>>>       .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/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
>>>> index 12d0072c52c2..aff0ab7bf83d 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c
>>>> @@ -358,7 +358,6 @@ static const struct dma_buf_ops vb2_dc_dmabuf_ops = {
>>>>       .map_dma_buf = vb2_dc_dmabuf_ops_map,
>>>>       .unmap_dma_buf = vb2_dc_dmabuf_ops_unmap,
>>>>       .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/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
>>>> index cf94765e593f..015e737095cd 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
>>>> @@ -507,7 +507,6 @@ static const struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
>>>>       .map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
>>>>       .unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
>>>>       .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/common/videobuf2/videobuf2-vmalloc.c b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
>>>> index 298ffb9ecdae..467a4005164b 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-vmalloc.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
>>>> @@ -346,7 +346,6 @@ static const struct dma_buf_ops vb2_vmalloc_dmabuf_ops = {
>>>>       .map_dma_buf = vb2_vmalloc_dmabuf_ops_map,
>>>>       .unmap_dma_buf = vb2_vmalloc_dmabuf_ops_unmap,
>>>>       .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 57e0d8035b2e..a46219ff5e16 100644
>>>> --- a/drivers/staging/android/ion/ion.c
>>>> +++ b/drivers/staging/android/ion/ion.c
>>>> @@ -374,8 +374,6 @@ static const struct dma_buf_ops dma_buf_ops = {
>>>>       .detach = ion_dma_buf_detatch,
>>>>       .begin_cpu_access = ion_dma_buf_begin_cpu_access,
>>>>       .end_cpu_access = ion_dma_buf_end_cpu_access,
>>>> -    .map_atomic = ion_dma_buf_kmap,
>>>> -    .unmap_atomic = ion_dma_buf_kunmap,
>>>>       .map = ion_dma_buf_kmap,
>>>>       .unmap = ion_dma_buf_kunmap,
>>>>    };
>>>> diff --git a/drivers/tee/tee_shm.c b/drivers/tee/tee_shm.c
>>>> index 556960a1bab3..df4a1553b78b 100644
>>>> --- a/drivers/tee/tee_shm.c
>>>> +++ b/drivers/tee/tee_shm.c
>>>> @@ -80,11 +80,6 @@ static void tee_shm_op_release(struct dma_buf *dmabuf)
>>>>       tee_shm_release(shm);
>>>>    }
>>>>
>>>> -static void *tee_shm_op_map_atomic(struct dma_buf *dmabuf, unsigned long pgnum)
>>>> -{
>>>> -    return NULL;
>>>> -}
>>>> -
>>>>    static void *tee_shm_op_map(struct dma_buf *dmabuf, unsigned long pgnum)
>>>>    {
>>>>       return NULL;
>>>> @@ -107,7 +102,6 @@ static const struct dma_buf_ops tee_shm_dma_buf_ops = {
>>>>       .map_dma_buf = tee_shm_op_map_dma_buf,
>>>>       .unmap_dma_buf = tee_shm_op_unmap_dma_buf,
>>>>       .release = tee_shm_op_release,
>>>> -    .map_atomic = tee_shm_op_map_atomic,
>>>>       .map = tee_shm_op_map,
>>>>       .mmap = tee_shm_op_mmap,
>>>>    };
>>>> diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h
>>>> index ef338151cea8..d716d653b096 100644
>>>> --- a/include/drm/drm_prime.h
>>>> +++ b/include/drm/drm_prime.h
>>>> @@ -93,10 +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_atomic(struct dma_buf *dma_buf,
>>>> -                             unsigned long page_num);
>>>> -void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf,
>>>> -                              unsigned long page_num, void *addr);
>>>>    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);
>>>> diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
>>>> index 346caf77937f..d17cadd76802 100644
>>>> --- a/include/linux/dma-buf.h
>>>> +++ b/include/linux/dma-buf.h
>>>> @@ -205,8 +205,6 @@ struct dma_buf_ops {
>>>>        * to be restarted.
>>>>        */
>>>>       int (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
>>>> -    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 *);
>>>>
>>>> @@ -394,8 +392,6 @@ int dma_buf_begin_cpu_access(struct dma_buf *dma_buf,
>>>>                            enum dma_data_direction dir);
>>>>    int dma_buf_end_cpu_access(struct dma_buf *dma_buf,
>>>>                          enum dma_data_direction dir);
>>>> -void *dma_buf_kmap_atomic(struct dma_buf *, unsigned long);
>>>> -void dma_buf_kunmap_atomic(struct dma_buf *, unsigned long, void *);
>>>>    void *dma_buf_kmap(struct dma_buf *, unsigned long);
>>>>    void dma_buf_kunmap(struct dma_buf *, unsigned long, void *);
>>>>
>>>> --
>>>> 2.14.1
>>>>
>>>> _______________________________________________
>>>> dri-devel mailing list
>>>> dri-devel at lists.freedesktop.org
>>>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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