linux-kernel - [PATCH -next] intel-iommu: fix a variable set but not used

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Message-Id: <1559333762-2436-1-git-send-email-cai@lca.pw>
Date:   Fri, 31 May 2019 16:16:02 -0400
From:   Qian Cai <cai@....pw>
To:     jroedel@...e.de
Cc:     jamessewart@...sta.com, baolu.lu@...ux.intel.com,
        dwmw2@...radead.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, Qian Cai <cai@....pw>
Subject: [PATCH -next] intel-iommu: fix a variable set but not used

The commit "iommu/vt-d: Delegate the dma domain to upper layer" left an
unused variable,

drivers/iommu/intel-iommu.c: In function 'disable_dmar_iommu':
drivers/iommu/intel-iommu.c:1652:23: warning: variable 'domain' set but
not used [-Wunused-but-set-variable]

Signed-off-by: Qian Cai <cai@....pw>
---
 drivers/iommu/intel-iommu.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index b431cc6f6ba4..073c547f247a 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1649,16 +1649,12 @@ static void disable_dmar_iommu(struct intel_iommu *iommu)
 
 	spin_lock_irqsave(&device_domain_lock, flags);
 	list_for_each_entry_safe(info, tmp, &device_domain_list, global) {
-		struct dmar_domain *domain;
-
 		if (info->iommu != iommu)
 			continue;
 
 		if (!info->dev || !info->domain)
 			continue;
 
-		domain = info->domain;
-
 		__dmar_remove_one_dev_info(info);
 	}
 	spin_unlock_irqrestore(&device_domain_lock, flags);
-- 
1.8.3.1