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Message-Id: <1498651258-23700-2-git-send-email-joro@8bytes.org>
Date:   Wed, 28 Jun 2017 14:00:57 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     iommu@...ts.linux-foundation.org
Cc:     linux-kernel@...r.kernel.org,
        Gerald Schaefer <gerald.schaefer@...ibm.com>,
        Suman Anna <s-anna@...com>, Joerg Roedel <jroedel@...e.de>
Subject: [PATCH 2/3] iommu/omap: Return ERR_PTR in device_group call-back

From: Joerg Roedel <jroedel@...e.de>

Make sure that the device_group callback returns an ERR_PTR
instead of NULL.

Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/omap-iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index 95dfca3..641e035 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -1309,7 +1309,7 @@ static void omap_iommu_remove_device(struct device *dev)
 static struct iommu_group *omap_iommu_device_group(struct device *dev)
 {
 	struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
-	struct iommu_group *group = NULL;
+	struct iommu_group *group = ERR_PTR(-EINVAL);
 
 	if (arch_data->iommu_dev)
 		group = arch_data->iommu_dev->group;
-- 
2.7.4

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