Neither used nor correctly implemented anywhere. Just completely remove the interface.
Signed-off-by: Christian König christian.koenig@amd.com --- 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). @@ -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 *);