Re: [PATCH] drm/msm: allow returning NULL from crete_address_space

[Konrad Dybcio]

On 8.09.2024 7:59 PM, Dmitry Baryshkov wrote:
> Under some circumstance

Under what circumstances?

This branch is only taken if there's a .create_private_address_space
callback and it only seems to be there on a[67]xx.

a6xx_create_address_space returns:

- an ERR_PTR if msm_iommu_pagetable_create() fails
- retval of msm_gem_address_space_create() otherwise
   - retval of msm_iommu_pagetable_create() is nullchecked here
     again because we apparently we want to be double sure
   - err_ptr(-enomem) is returned if allocating aspace fails
   - otherwise aspace is allocated somewhere

Konrad