diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_iommu.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_iommu.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c index 76cdd5ea06a0..a188617653e8 100644 --- a/drivers/gpu/drm/msm/msm_iommu.c +++ b/drivers/gpu/drm/msm/msm_iommu.c @@ -338,6 +338,8 @@ msm_iommu_pagetable_prealloc_allocate(struct msm_mmu *mmu, struct msm_mmu_preall ret = kmem_cache_alloc_bulk(pt_cache, GFP_KERNEL, p->count, p->pages); if (ret != p->count) { + kfree(p->pages); + p->pages = NULL; p->count = ret; return -ENOMEM; } @@ -351,6 +353,9 @@ msm_iommu_pagetable_prealloc_cleanup(struct msm_mmu *mmu, struct msm_mmu_preallo struct kmem_cache *pt_cache = get_pt_cache(mmu); uint32_t remaining_pt_count = p->count - p->ptr; + if (!p->pages) + return; + if (p->count > 0) trace_msm_mmu_prealloc_cleanup(p->count, remaining_pt_count); @@ -721,7 +726,7 @@ struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks) int ret; if (!device_iommu_mapped(dev)) - return NULL; + return ERR_PTR(-ENODEV); domain = iommu_paging_domain_alloc(dev); if (IS_ERR(domain)) @@ -756,7 +761,7 @@ struct msm_mmu *msm_iommu_disp_new(struct device *dev, unsigned long quirks) struct msm_mmu *mmu; mmu = msm_iommu_new(dev, quirks); - if (IS_ERR_OR_NULL(mmu)) + if (IS_ERR(mmu)) return mmu; iommu = to_msm_iommu(mmu); @@ -772,11 +777,11 @@ struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsig struct msm_mmu *mmu; mmu = msm_iommu_new(dev, quirks); - if (IS_ERR_OR_NULL(mmu)) + if (IS_ERR(mmu)) return mmu; iommu = to_msm_iommu(mmu); - if (adreno_smmu && adreno_smmu->cookie) { + if (adreno_smmu->cookie) { const struct io_pgtable_cfg *cfg = adreno_smmu->get_ttbr1_cfg(adreno_smmu->cookie); size_t tblsz = get_tblsz(cfg); |