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iommu/vt-d: Remove the useless dma_pte_addr 

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yijing Wang 2014-05-26 20:13:47 +08:00 committed by Joerg Roedel
parent c3c75eb7fa
commit effad4b59f
1 changed files with 2 additions and 4 deletions
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6
drivers/iommu/intel-iommu.c
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@ -849,13 +849,11 @@ static struct dma_pte *pfn_to_dma_pte(struct dmar_domain *domain,
domain_flush_cache(domain, tmp_page, VTD_PAGE_SIZE);
pteval = ((uint64_t)virt_to_dma_pfn(tmp_page) << VTD_PAGE_SHIFT) | DMA_PTE_READ | DMA_PTE_WRITE;
if (cmpxchg64(&pte->val, 0ULL, pteval)) {
if (cmpxchg64(&pte->val, 0ULL, pteval))
/* Someone else set it while we were thinking; use theirs. */
free_pgtable_page(tmp_page);
} else {
dma_pte_addr(pte);
else
domain_flush_cache(domain, pte, sizeof(*pte));
}
}
if (level == 1)
break;