From: Shaokun Zhang <zhangshaokun@hisilicon.com>
To: <iommu@lists.linux-foundation.org>, <linux-kernel@vger.kernel.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>,
Joerg Roedel <jroedel@suse.de>,
Robin Murphy <robin.murphy@arm.com>,
Zhen Lei <thunder.leizhen@huawei.com>
Subject: [PATCH] iommu/dma: Remove unused variable
Date: Thu, 24 Jan 2019 15:10:02 +0800 [thread overview]
Message-ID: <1548313802-64412-1-git-send-email-zhangshaokun@hisilicon.com> (raw)
end_pfn is never used after commit <aa3ac9469c18> ('iommu/iova: Make dma
32bit pfn implicit'), cleanup it.
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
drivers/iommu/dma-iommu.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index d19f3d6b43c1..77aabe637a60 100644
--- 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) {
--
2.7.4
next reply other threads:[~2019-01-24 7:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-24 7:10 Shaokun Zhang [this message]
2019-01-24 14:16 ` [PATCH] iommu/dma: Remove unused variable Joerg Roedel
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