linux-kernel - [PATCH 2/5] iommu: remove redundant NULL check before dma_ops_domain

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Message-Id: <1360641713-24895-3-git-send-email-tipecaml@gmail.com>
Date:	Tue, 12 Feb 2013 05:01:50 +0100
From:	Cyril Roelandt <tipecaml@...il.com>
To:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Cc:	Cyril Roelandt <tipecaml@...il.com>, joro@...tes.org,
	iommu@...ts.linux-foundation.org
Subject: [PATCH 2/5] iommu: remove redundant NULL check before dma_ops_domain_free().

dma_ops_domain_free on a NULL pointer is a no-op, so the NULL check in
amd_iommu_init_dma_ops() can be removed.

Signed-off-by: Cyril Roelandt <tipecaml@...il.com>
---
 drivers/iommu/amd_iommu.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index d33eaaf..98f555d 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3187,8 +3187,7 @@ int __init amd_iommu_init_dma_ops(void)
 free_domains:
 
 	for_each_iommu(iommu) {
-		if (iommu->default_dom)
-			dma_ops_domain_free(iommu->default_dom);
+		dma_ops_domain_free(iommu->default_dom);
 	}
 
 	return ret;
-- 
1.7.10.4

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