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Message-Id: <1269094385-16114-12-git-send-email-w.sang@pengutronix.de>
Date:	Sat, 20 Mar 2010 15:12:52 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	kernel-janitors@...r.kernel.org
Cc:	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	Wolfram Sang <w.sang@...gutronix.de>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	linux-media@...r.kernel.org
Subject: [PATCH 11/24] media/radio/si470x: fix dangling pointers

Fix I2C-drivers which missed setting clientdata to NULL before freeing the
structure it points to. Also fix drivers which do this _after_ the structure
was freed already.

Signed-off-by: Wolfram Sang <w.sang@...gutronix.de>
Cc: Mauro Carvalho Chehab <mchehab@...radead.org>
---

Found using coccinelle, then reviewed. Full patchset is available via
kernel-janitors, linux-i2c, and LKML.
---
 drivers/media/radio/si470x/radio-si470x-i2c.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c b/drivers/media/radio/si470x/radio-si470x-i2c.c
index 5466015..2dabfac 100644
--- a/drivers/media/radio/si470x/radio-si470x-i2c.c
+++ b/drivers/media/radio/si470x/radio-si470x-i2c.c
@@ -480,8 +480,8 @@ static __devexit int si470x_i2c_remove(struct i2c_client *client)
 	free_irq(client->irq, radio);
 	cancel_work_sync(&radio->radio_work);
 	video_unregister_device(radio->videodev);
-	kfree(radio);
 	i2c_set_clientdata(client, NULL);
+	kfree(radio);
 
 	return 0;
 }
-- 
1.7.0

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