iommu/dma: Remove unused variable

zhangshk · joergroedel · commit c61a4633a56a · 2019-01-24T15:14:35.000+01:00
end_pfn is never used after commit &lt;aa3ac9469c18&gt; ('iommu/iova: Make dma
32bit pfn implicit'), cleanup it.

Cc: Joerg Roedel &lt;jroedel@suse.de&gt;
Cc: Robin Murphy &lt;robin.murphy@arm.com&gt;
Cc: Zhen Lei &lt;thunder.leizhen@huawei.com&gt;
Signed-off-by: Shaokun Zhang &lt;zhangshaokun@hisilicon.com&gt;
Signed-off-by: Joerg Roedel &lt;jroedel@suse.de&gt;
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
@@ -289,7 +289,7 @@ int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,
 {
 	struct iommu_dma_cookie *cookie = domain->iova_cookie;
 	struct iova_domain *iovad = &cookie->iovad;
-	unsigned long order, base_pfn, end_pfn;
+	unsigned long order, base_pfn;
 	int attr;
 
 	if (!cookie || cookie->type != IOMMU_DMA_IOVA_COOKIE)
@@ -298,7 +298,6 @@ int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,
 	/* Use the smallest supported page size for IOVA granularity */
 	order = __ffs(domain->pgsize_bitmap);
 	base_pfn = max_t(unsigned long, 1, base >> order);
-	end_pfn = (base + size - 1) >> order;
 
 	/* Check the domain allows at least some access to the device... */
 	if (domain->geometry.force_aperture) {
