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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Wenwen Wang <wenwen@cs.uga.edu>,
        Hans Verkuil <hverkuil-cisco@xs4all.nl>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.19 100/211] media: saa7146: add cleanup in hexium_attach()
Date:   Thu,  3 Oct 2019 17:52:46 +0200
Message-Id: <20191003154509.529699392@linuxfoundation.org>
In-Reply-To: <20191003154447.010950442@linuxfoundation.org>
References: <20191003154447.010950442@linuxfoundation.org>
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From: Wenwen Wang <wenwen@cs.uga.edu>

[ Upstream commit 42e64117d3b4a759013f77bbcf25ab6700e55de7 ]

If saa7146_register_device() fails, no cleanup is executed, leading to
memory/resource leaks. To fix this issue, perform necessary cleanup work
before returning the error.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/pci/saa7146/hexium_gemini.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/pci/saa7146/hexium_gemini.c b/drivers/media/pci/saa7146/hexium_gemini.c
index 6d8e4afe9673a..8c56d4c37a525 100644
--- a/drivers/media/pci/saa7146/hexium_gemini.c
+++ b/drivers/media/pci/saa7146/hexium_gemini.c
@@ -304,6 +304,9 @@ static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_d
 	ret = saa7146_register_device(&hexium->video_dev, dev, "hexium gemini", VFL_TYPE_GRABBER);
 	if (ret < 0) {
 		pr_err("cannot register capture v4l2 device. skipping.\n");
+		saa7146_vv_release(dev);
+		i2c_del_adapter(&hexium->i2c_adapter);
+		kfree(hexium);
 		return ret;
 	}
 
-- 
2.20.1