On Sat, 19 Jul 2025 17:01:45 -0700
Chia-I Wu <olvaffe@gmail.com> wrote:
> Fail early from panthor_vm_bind_prepare_op_ctx instead of late from
> ops->map_pages.
>
> Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
We can probably merge this one ahead of the coredump stuff.
> ---
> drivers/gpu/drm/panthor/panthor_mmu.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/panthor/panthor_mmu.c b/drivers/gpu/drm/panthor/panthor_mmu.c
> index a857a0dd1099..7862c99984b6 100644
> --- a/drivers/gpu/drm/panthor/panthor_mmu.c
> +++ b/drivers/gpu/drm/panthor/panthor_mmu.c
> @@ -1206,7 +1206,7 @@ static int panthor_vm_prepare_map_op_ctx(struct panthor_vm_op_ctx *op_ctx,
> (flags & DRM_PANTHOR_VM_BIND_OP_TYPE_MASK) != DRM_PANTHOR_VM_BIND_OP_TYPE_MAP)
> return -EINVAL;
>
> - /* Make sure the VA and size are aligned and in-bounds. */
> + /* Make sure the VA and size are in-bounds. */
> if (size > bo->base.base.size || offset > bo->base.base.size - size)
> return -EINVAL;
>
> @@ -2423,7 +2423,7 @@ panthor_vm_bind_prepare_op_ctx(struct drm_file *file,
> int ret;
>
> /* Aligned on page size. */
> - if (!IS_ALIGNED(op->va | op->size, vm_pgsz))
> + if (!IS_ALIGNED(op->va | op->size | op->bo_offset, vm_pgsz))
> return -EINVAL;
>
> switch (op->flags & DRM_PANTHOR_VM_BIND_OP_TYPE_MASK) {