diff options
| -rw-r--r-- | drivers/iommu/dma-iommu.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 94263ed2c564..0832998eca38 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -87,7 +87,6 @@ struct iommu_dma_cookie { struct iommu_domain *fq_domain; /* Options for dma-iommu use */ struct iommu_dma_options options; - struct mutex mutex; }; static DEFINE_STATIC_KEY_FALSE(iommu_deferred_attach_enabled); @@ -401,7 +400,6 @@ int iommu_get_dma_cookie(struct iommu_domain *domain) if (!domain->iova_cookie) return -ENOMEM; - mutex_init(&domain->iova_cookie->mutex); iommu_domain_set_sw_msi(domain, iommu_dma_sw_msi); return 0; } @@ -709,23 +707,20 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, struct device *dev domain->geometry.aperture_start >> order); /* start_pfn is always nonzero for an already-initialised domain */ - mutex_lock(&cookie->mutex); if (iovad->start_pfn) { if (1UL << order != iovad->granule || base_pfn != iovad->start_pfn) { pr_warn("Incompatible range for DMA domain\n"); - ret = -EFAULT; - goto done_unlock; + return -EFAULT; } - ret = 0; - goto done_unlock; + return 0; } init_iova_domain(iovad, 1UL << order, base_pfn); ret = iova_domain_init_rcaches(iovad); if (ret) - goto done_unlock; + return ret; iommu_dma_init_options(&cookie->options, dev); @@ -734,11 +729,7 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, struct device *dev (!device_iommu_capable(dev, IOMMU_CAP_DEFERRED_FLUSH) || iommu_dma_init_fq(domain))) domain->type = IOMMU_DOMAIN_DMA; - ret = iova_reserve_iommu_regions(dev, domain); - -done_unlock: - mutex_unlock(&cookie->mutex); - return ret; + return iova_reserve_iommu_regions(dev, domain); } /** |