[PATCH 5.13 060/266] drm/amdgpu: fix metadata_size for ubo ioctl queries

Greg Kroah-Hartman
2021-07-15T19:24:03Z

From: Shiwu Zhang <shiwu.zhang@amd.com>

[ Upstream commit eba98523724be7ad3539f2c975de1527e0c99dd6 ]

Although the kfd_ioctl_get_dmabuf_info() still fail it will indicate
the caller right metadat_size useful for the same kfd ioctl next time.

Signed-off-by: Shiwu Zhang <shiwu.zhang@amd.com>
Reviewed-by: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index f9434bc2f9b2..db00de33caa3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1246,6 +1246,9 @@ int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,

BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
ubo = to_amdgpu_bo_user(bo);
+ if (metadata_size)
+ *metadata_size = ubo->metadata_size;
+
if (buffer) {
if (buffer_size < ubo->metadata_size)
return -EINVAL;
@@ -1254,8 +1257,6 @@ int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
memcpy(buffer, ubo->metadata, ubo->metadata_size);
}

- if (metadata_size)
- *metadata_size = ubo->metadata_size;
if (flags)
*flags = ubo->metadata_flags;

--
2.30.2