linux-kernel - [PATCH v2 05/13] iommu/rockchip: Fix error handling in init

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180116132540.18939-6-jeffy.chen@rock-chips.com>
Date:   Tue, 16 Jan 2018 21:25:32 +0800
From:   Jeffy Chen <jeffy.chen@...k-chips.com>
To:     linux-kernel@...r.kernel.org
Cc:     jcliang@...omium.org, robin.murphy@....com, xxm@...k-chips.com,
        tfiga@...omium.org, Jeffy Chen <jeffy.chen@...k-chips.com>,
        Heiko Stuebner <heiko@...ech.de>,
        linux-rockchip@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, Joerg Roedel <joro@...tes.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 05/13] iommu/rockchip: Fix error handling in init

It's hard to undo bus_set_iommu() in the error path, so move it to the
end of rk_iommu_probe().

Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
---

Changes in v2:
Move bus_set_iommu() to rk_iommu_probe().

 drivers/iommu/rockchip-iommu.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index bd8b32dc0db6..d2a0b0daf40d 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -1187,6 +1187,8 @@ static int rk_iommu_probe(struct platform_device *pdev)
 		return err;
 	}
 
+	bus_set_iommu(&platform_bus_type, &rk_iommu_ops);
+
 	return 0;
 }
 
@@ -1218,27 +1220,19 @@ static struct platform_driver rk_iommu_driver = {
 
 static int __init rk_iommu_init(void)
 {
-	struct device_node *np;
 	int ret;
 
-	np = of_find_matching_node(NULL, rk_iommu_dt_ids);
-	if (!np)
-		return 0;
-
-	of_node_put(np);
-
-	ret = bus_set_iommu(&platform_bus_type, &rk_iommu_ops);
-	if (ret)
-		return ret;
-
 	ret = platform_driver_register(&rk_iommu_domain_driver);
 	if (ret)
 		return ret;
 
 	ret = platform_driver_register(&rk_iommu_driver);
-	if (ret)
+	if (ret) {
 		platform_driver_unregister(&rk_iommu_domain_driver);
-	return ret;
+		return ret;
+	}
+
+	return 0;
 }
 static void __exit rk_iommu_exit(void)
 {
-- 
2.11.0