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drm/amdgpu: Explicitly add a flexible array at the end of 'struct amdgpu_bo_list'

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'struct amdgpu_bo_list' is really used as if it was ended by a flex array.
So make it more explicit and add a 'struct amdgpu_bo_list_entry entries[]'
field at the end of the structure.

This way, struct_size() can be used when it is allocated.
It is less verbose.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christophe JAILLET 2023-08-20 11:51:13 +02:00 committed by Alex Deucher
parent ac0ec1c7d1
commit ff49bd2c74
2 changed files with 3 additions and 4 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c
View File

@ -75,7 +75,6 @@ int amdgpu_bo_list_create(struct amdgpu_device *adev, struct drm_file *filp,
struct amdgpu_bo_list_entry *array;
struct amdgpu_bo_list *list;
uint64_t total_size = 0;
size_t size;
unsigned i;
int r;
@ -83,9 +82,7 @@ int amdgpu_bo_list_create(struct amdgpu_device *adev, struct drm_file *filp,
/ sizeof(struct amdgpu_bo_list_entry))
return -EINVAL;
size = sizeof(struct amdgpu_bo_list);
size += num_entries * sizeof(struct amdgpu_bo_list_entry);
list = kvmalloc(size, GFP_KERNEL);
list = kvmalloc(struct_size(list, entries, num_entries), GFP_KERNEL);
if (!list)
return -ENOMEM;

2
drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.h
View File

@ -55,6 +55,8 @@ struct amdgpu_bo_list {
/* Protect access during command submission.
*/
struct mutex bo_list_mutex;
struct amdgpu_bo_list_entry entries[];
};
int amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id,