drm/vc4: Start using u64_to_user_ptr.

Chris Wilson pointed out this little cleanup in a review of new code, so let's fix up the code I was copying from. Signed-off-by: Eric Anholt <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] Reviewed-by: Daniel Vetter <[email protected]>
kyagi · Jul 28, 2017 · 95d7cbc · 95d7cbc
1 parent 78acea3
commit 95d7cbc
Showing 1 changed file with 5 additions and 6 deletions.
diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -119,7 +119,7 @@ vc4_get_hang_state_ioctl(struct drm_device *dev, void *data,
 		bo_state[i].size = vc4_bo->base.base.size;
 	}
 
-	if (copy_to_user((void __user *)(uintptr_t)get_state->bo,
+	if (copy_to_user(u64_to_user_ptr(get_state->bo),
 			 bo_state,
 			 state->bo_count * sizeof(*bo_state)))
 		ret = -EFAULT;
@@ -678,8 +678,7 @@ vc4_cl_lookup_bos(struct drm_device *dev,
 		goto fail;
 	}
 
-	if (copy_from_user(handles,
-			   (void __user *)(uintptr_t)args->bo_handles,
+	if (copy_from_user(handles, u64_to_user_ptr(args->bo_handles),
 			   exec->bo_count * sizeof(uint32_t))) {
 		ret = -EFAULT;
 		DRM_ERROR("Failed to copy in GEM handles\n");
@@ -755,21 +754,21 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec)
 	exec->shader_state_size = args->shader_rec_count;
 
 	if (copy_from_user(bin,
-			   (void __user *)(uintptr_t)args->bin_cl,
+			   u64_to_user_ptr(args->bin_cl),
 			   args->bin_cl_size)) {
 		ret = -EFAULT;
 		goto fail;
 	}
 
 	if (copy_from_user(exec->shader_rec_u,
-			   (void __user *)(uintptr_t)args->shader_rec,
+			   u64_to_user_ptr(args->shader_rec),
 			   args->shader_rec_size)) {
 		ret = -EFAULT;
 		goto fail;
 	}
 
 	if (copy_from_user(exec->uniforms_u,
-			   (void __user *)(uintptr_t)args->uniforms,
+			   u64_to_user_ptr(args->uniforms),
 			   args->uniforms_size)) {
 		ret = -EFAULT;
 		goto fail;