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iommu/dma: Remove redundant "!dev" checks

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iommu_dma_init_domain() is now only called from iommu_setup_dma_ops(),
which has already assumed dev to be non-NULL.

Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/06024523c080364390016550065e3cfe8031367e.1628682049.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Robin Murphy 2021-08-11 13:21:27 +01:00 committed by Joerg Roedel
parent ca84ed7f72
commit 8d971243a9
1 changed files with 1 additions and 4 deletions
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5
drivers/iommu/dma-iommu.c
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@ -370,7 +370,7 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,
init_iova_domain(iovad, 1UL << order, base_pfn);
if (!cookie->fq_domain && (!dev || !dev_is_untrusted(dev)) &&
if (!cookie->fq_domain && !dev_is_untrusted(dev) &&
domain->ops->flush_iotlb_all && !iommu_get_dma_strict(domain)) {
if (init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all,
iommu_dma_entry_dtor))
@ -379,9 +379,6 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,
cookie->fq_domain = domain;
}
if (!dev)
return 0;
return iova_reserve_iommu_regions(dev, domain);
}