diff options
Diffstat (limited to 'drivers/iommu/intel/cache.c')
| -rw-r--r-- | drivers/iommu/intel/cache.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/intel/cache.c b/drivers/iommu/intel/cache.c index 08f7ce2c16c3..2e997d782beb 100644 --- a/drivers/iommu/intel/cache.c +++ b/drivers/iommu/intel/cache.c @@ -190,6 +190,13 @@ int cache_tag_assign_domain(struct dmar_domain *domain, u16 did = domain_get_id_for_dev(domain, dev); int ret; + /* domain->qi_bach will be freed in iommu_free_domain() path. */ + if (!domain->qi_batch) { + domain->qi_batch = kzalloc(sizeof(*domain->qi_batch), GFP_KERNEL); + if (!domain->qi_batch) + return -ENOMEM; + } + ret = __cache_tag_assign_domain(domain, did, dev, pasid); if (ret || domain->domain.type != IOMMU_DOMAIN_NESTED) return ret; |