drm/i915: Remove dma_buf_kmap selftest

It's the only user left in the entire kernel for dma_buf_kmap/_kunmap.
Delete it, before we start garbage-collecting the various
implementations.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Dave Airlie <airlied@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-4-daniel.vetter@ffwll.ch

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
index d85d1ce273ca873f1c8fff45cff8e8e195cb1541..2a52b92586b9f049fd73ac8c90bea59cdeeeb904 100644 (file)
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
@@ -254,106 +254,6 @@ err_obj:
        return err;
 }
 
-static int igt_dmabuf_export_kmap(void *arg)
-{
-       struct drm_i915_private *i915 = arg;
-       struct drm_i915_gem_object *obj;
-       struct dma_buf *dmabuf;
-       void *ptr;
-       int err;
-
-       obj = i915_gem_object_create_shmem(i915, 2 * PAGE_SIZE);
-       if (IS_ERR(obj))
-               return PTR_ERR(obj);
-
-       dmabuf = i915_gem_prime_export(&obj->base, 0);
-       i915_gem_object_put(obj);
-       if (IS_ERR(dmabuf)) {
-               err = PTR_ERR(dmabuf);
-               pr_err("i915_gem_prime_export failed with err=%d\n", err);
-               return err;
-       }
-
-       ptr = dma_buf_kmap(dmabuf, 0);
-       if (!ptr) {
-               pr_err("dma_buf_kmap failed\n");
-               err = -ENOMEM;
-               goto err;
-       }
-
-       if (memchr_inv(ptr, 0, PAGE_SIZE)) {
-               dma_buf_kunmap(dmabuf, 0, ptr);
-               pr_err("Exported page[0] not initialiased to zero!\n");
-               err = -EINVAL;
-               goto err;
-       }
-
-       memset(ptr, 0xc5, PAGE_SIZE);
-       dma_buf_kunmap(dmabuf, 0, ptr);
-
-       ptr = i915_gem_object_pin_map(obj, I915_MAP_WB);
-       if (IS_ERR(ptr)) {
-               err = PTR_ERR(ptr);
-               pr_err("i915_gem_object_pin_map failed with err=%d\n", err);
-               goto err;
-       }
-       memset(ptr + PAGE_SIZE, 0xaa, PAGE_SIZE);
-       i915_gem_object_flush_map(obj);
-       i915_gem_object_unpin_map(obj);
-
-       ptr = dma_buf_kmap(dmabuf, 1);
-       if (!ptr) {
-               pr_err("dma_buf_kmap failed\n");
-               err = -ENOMEM;
-               goto err;
-       }
-
-       if (memchr_inv(ptr, 0xaa, PAGE_SIZE)) {
-               dma_buf_kunmap(dmabuf, 1, ptr);
-               pr_err("Exported page[1] not set to 0xaa!\n");
-               err = -EINVAL;
-               goto err;
-       }
-
-       memset(ptr, 0xc5, PAGE_SIZE);
-       dma_buf_kunmap(dmabuf, 1, ptr);
-
-       ptr = dma_buf_kmap(dmabuf, 0);
-       if (!ptr) {
-               pr_err("dma_buf_kmap failed\n");
-               err = -ENOMEM;
-               goto err;
-       }
-       if (memchr_inv(ptr, 0xc5, PAGE_SIZE)) {
-               dma_buf_kunmap(dmabuf, 0, ptr);
-               pr_err("Exported page[0] did not retain 0xc5!\n");
-               err = -EINVAL;
-               goto err;
-       }
-       dma_buf_kunmap(dmabuf, 0, ptr);
-
-       ptr = dma_buf_kmap(dmabuf, 2);
-       if (ptr) {
-               pr_err("Erroneously kmapped beyond the end of the object!\n");
-               dma_buf_kunmap(dmabuf, 2, ptr);
-               err = -EINVAL;
-               goto err;
-       }
-
-       ptr = dma_buf_kmap(dmabuf, -1);
-       if (ptr) {
-               pr_err("Erroneously kmapped before the start of the object!\n");
-               dma_buf_kunmap(dmabuf, -1, ptr);
-               err = -EINVAL;
-               goto err;
-       }
-
-       err = 0;
-err:
-       dma_buf_put(dmabuf);
-       return err;
-}
-
 int i915_gem_dmabuf_mock_selftests(void)
 {
        static const struct i915_subtest tests[] = {
@@ -362,7 +262,6 @@ int i915_gem_dmabuf_mock_selftests(void)
                SUBTEST(igt_dmabuf_import),
                SUBTEST(igt_dmabuf_import_ownership),
                SUBTEST(igt_dmabuf_export_vmap),
-               SUBTEST(igt_dmabuf_export_kmap),
        };
        struct drm_i915_private *i915;
        int err;