linux-kernel - [PATCH] iommu/qcom: Simplify a test in 'qcom_iommu_add

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Message-Id: <20190916202936.30403-1-christophe.jaillet@wanadoo.fr>
Date:   Mon, 16 Sep 2019 22:29:36 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     agross@...nel.org, robdclark@...il.com, joro@...tes.org
Cc:     linux-arm-msm@...r.kernel.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] iommu/qcom: Simplify a test in 'qcom_iommu_add_device()'

'iommu_group_get_for_dev()' never returns NULL, so this test can be
simplified a bit.

This way, the test is consistent with all other calls to
'iommu_group_get_for_dev()'.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/iommu/qcom_iommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c
index c31e7bc4ccbe..3d99ec868892 100644
--- a/drivers/iommu/qcom_iommu.c
+++ b/drivers/iommu/qcom_iommu.c
@@ -539,8 +539,8 @@ static int qcom_iommu_add_device(struct device *dev)
 	}
 
 	group = iommu_group_get_for_dev(dev);
-	if (IS_ERR_OR_NULL(group))
-		return PTR_ERR_OR_ZERO(group);
+	if (IS_ERR(group))
+		return PTR_ERR(group);
 
 	iommu_group_put(group);
 	iommu_device_link(&qcom_iommu->iommu, dev);
-- 
2.20.1