Patch "[media] cxd2820r: fix gpio null pointer dereference" has been added to the 4.10-stable tree

Patch "[media] cxd2820r: fix gpio null pointer dereference" has been added to the 4.10-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    [media] cxd2820r: fix gpio null pointer dereference

to the 4.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     cxd2820r-fix-gpio-null-pointer-dereference.patch
and it can be found in the queue-4.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 0ffb94b6cc5df6376ab6bff5b80075641f6716f8 Mon Sep 17 00:00:00 2001
From: Antti Palosaari <crope@iki.fi>
Date: Mon, 16 Jan 2017 19:27:41 -0200
Subject: [media] cxd2820r: fix gpio null pointer dereference
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Antti Palosaari <crope@iki.fi>

commit 0ffb94b6cc5df6376ab6bff5b80075641f6716f8 upstream.

Setting GPIOs during probe causes null pointer deference when
GPIOLIB was not selected by Kconfig. Initialize driver private
field before calling set gpios.

It is regressing bug since 4.9.

Fixes: 07fdf7d9f19f ("[media] cxd2820r: add I2C driver bindings")

Reported-by: Chris Rankin <rankincj@gmail.com>
Tested-by: Chris Rankin <rankincj@gmail.com>
Tested-by: Håkan Lennestål <hakan.lennestal@gmail.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/media/dvb-frontends/cxd2820r_core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/media/dvb-frontends/cxd2820r_core.c
+++ b/drivers/media/dvb-frontends/cxd2820r_core.c
@@ -615,6 +615,7 @@ static int cxd2820r_probe(struct i2c_cli
 	}
 
 	priv->client[0] = client;
+	priv->fe.demodulator_priv = priv;
 	priv->i2c = client->adapter;
 	priv->ts_mode = pdata->ts_mode;
 	priv->ts_clk_inv = pdata->ts_clk_inv;
@@ -697,7 +698,6 @@ static int cxd2820r_probe(struct i2c_cli
 	memcpy(&priv->fe.ops, &cxd2820r_ops, sizeof(priv->fe.ops));
 	if (!pdata->attach_in_use)
 		priv->fe.ops.release = NULL;
-	priv->fe.demodulator_priv = priv;
 	i2c_set_clientdata(client, priv);
 
 	/* Setup callbacks */


Patches currently in stable-queue which might be from crope@iki.fi are

queue-4.10/cxd2820r-fix-gpio-null-pointer-dereference.patch