From mboxrd@z Thu Jan 1 00:00:00 1970 From: Will Deacon Subject: [PATCH 2/2] iommu/arm-smmu: Delete an unnecessary check before the function call "free_io_pgtable_ops" Date: Mon, 29 Jun 2015 17:47:43 +0100 Message-ID: <1435596463-19247-3-git-send-email-will.deacon@arm.com> References: <1435596463-19247-1-git-send-email-will.deacon@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1435596463-19247-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Will Deacon , Markus Elfring , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: iommu@lists.linux-foundation.org From: Markus Elfring The free_io_pgtable_ops() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Signed-off-by: Will Deacon --- drivers/iommu/arm-smmu-v3.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index f14130121298..8e9ec81ce4bb 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1389,8 +1389,7 @@ static void arm_smmu_domain_free(struct iommu_domain *domain) struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_device *smmu = smmu_domain->smmu; - if (smmu_domain->pgtbl_ops) - free_io_pgtable_ops(smmu_domain->pgtbl_ops); + free_io_pgtable_ops(smmu_domain->pgtbl_ops); /* Free the CD and ASID, if we allocated them */ if (smmu_domain->stage == ARM_SMMU_DOMAIN_S1) { -- 2.1.4