Commit f5209f91 authored by Kefeng Wang's avatar Kefeng Wang Committed by Joerg Roedel
Browse files

iommu/vt-d: Drop duplicate check in dma_pte_free_pagetable() 



The BUG_ON check exists in dma_pte_clear_range(), kill the duplicate
check.

Signed-off-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Link: https://lore.kernel.org/r/20211025032307.182974-1-wangkefeng.wang@huawei.com


Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20211217083817.1745419-3-baolu.lu@linux.intel.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent bb712573

drivers/iommu/intel/iommu.c

+0 −4
Original line number Diff line number Diff line
@@ -1280,10 +1280,6 @@ static void dma_pte_free_pagetable(struct dmar_domain *domain, 
				   unsigned long last_pfn,

				   int retain_level)

{

	BUG_ON(!domain_pfn_supported(domain, start_pfn));

	BUG_ON(!domain_pfn_supported(domain, last_pfn));

	BUG_ON(start_pfn > last_pfn);



	dma_pte_clear_range(domain, start_pfn, last_pfn);



	/* We don't need lock here; nobody else touches the iova range */