/*
 * Cirrus Logic CS42448/CS42888 Audio CODEC DAI I2C driver
 *
 * Copyright (C) 2014 Freescale Semiconductor, Inc.
 *
 * Author: Nicolin Chen <Guangyu.Chen@freescale.com>
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 */

#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <sound/soc.h>

#include "cs42xx8.h"

static int cs42xx8_i2c_probe(struct i2c_client *i2c,
			     const struct i2c_device_id *id)
{
	int ret = cs42xx8_probe(&i2c->dev,
			devm_regmap_init_i2c(i2c, &cs42xx8_regmap_config));
	if (ret)
		return ret;

	pm_runtime_enable(&i2c->dev);
	pm_request_idle(&i2c->dev);

	return 0;
}

static int cs42xx8_i2c_remove(struct i2c_client *i2c)
{
	snd_soc_unregister_codec(&i2c->dev);
	pm_runtime_disable(&i2c->dev);

	return 0;
}

static struct i2c_device_id cs42xx8_i2c_id[] = {
	{"cs42448", (kernel_ulong_t)&cs42448_data},
	{"cs42888", (kernel_ulong_t)&cs42888_data},
	{}
};
MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);

static struct i2c_driver cs42xx8_i2c_driver = {
	.driver = {
		.name = "cs42xx8",
		.pm = &cs42xx8_pm,
		.of_match_table = cs42xx8_of_match,
	},
	.probe = cs42xx8_i2c_probe,
	.remove = cs42xx8_i2c_remove,
	.id_table = cs42xx8_i2c_id,
};

module_i2c_driver(cs42xx8_i2c_driver);

MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver");
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_LICENSE("GPL");
 href='/cgit.cgi/linux/net-next.git/refs/?id=f1712c73714088a7252d276a57126d56c7d37e64'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/sound/aoa'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/sound/aoa?id=f1712c73714088a7252d276a57126d56c7d37e64'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/sound/aoa?id=f1712c73714088a7252d276a57126d56c7d37e64'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/aoa?id=f1712c73714088a7252d276a57126d56c7d37e64'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/aoa'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=f1712c73714088a7252d276a57126d56c7d37e64'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=f1712c73714088a7252d276a57126d56c7d37e64'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/aoa?id=f1712c73714088a7252d276a57126d56c7d37e64'>aoa</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='f1712c73714088a7252d276a57126d56c7d37e64'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Eric Dumazet &lt;edumazet@google.com&gt;</td><td class='right'>2017-01-27 08:11:44 -0800</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-29 18:30:56 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/aoa?id=f1712c73714088a7252d276a57126d56c7d37e64'>f1712c73714088a7252d276a57126d56c7d37e64</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/aoa?id=f1712c73714088a7252d276a57126d56c7d37e64'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=f1712c73714088a7252d276a57126d56c7d37e64'>962ee49daf8d1cba8403fcf03b315d4a142ec944</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/aoa?id=f1712c73714088a7252d276a57126d56c7d37e64'>sound/aoa</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/aoa?id=dc97a89e726c4e1830320d1db8215ef77ecebae0'>dc97a89e726c4e1830320d1db8215ef77ecebae0</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/aoa?id=f1712c73714088a7252d276a57126d56c7d37e64&amp;id2=dc97a89e726c4e1830320d1db8215ef77ecebae0'>diff</a>)</td></tr></table>
<div class='commit-subject'>can: Fix kernel panic at security_sock_rcv_skb</div><div class='commit-msg'>Zhang Yanmin reported crashes [1] and provided a patch adding a
synchronize_rcu() call in can_rx_unregister()

The main problem seems that the sockets themselves are not RCU
protected.

If CAN uses RCU for delivery, then sockets should be freed only after
one RCU grace period.

Recent kernels could use sock_set_flag(sk, SOCK_RCU_FREE), but let's
ease stable backports with the following fix instead.

[1]
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [&lt;ffffffff81495e25&gt;] selinux_socket_sock_rcv_skb+0x65/0x2a0

Call Trace:
 &lt;IRQ&gt;
 [&lt;ffffffff81485d8c&gt;] security_sock_rcv_skb+0x4c/0x60
 [&lt;ffffffff81d55771&gt;] sk_filter+0x41/0x210
 [&lt;ffffffff81d12913&gt;] sock_queue_rcv_skb+0x53/0x3a0
 [&lt;ffffffff81f0a2b3&gt;] raw_rcv+0x2a3/0x3c0
 [&lt;ffffffff81f06eab&gt;] can_rcv_filter+0x12b/0x370
 [&lt;ffffffff81f07af9&gt;] can_receive+0xd9/0x120
 [&lt;ffffffff81f07beb&gt;] can_rcv+0xab/0x100
 [&lt;ffffffff81d362ac&gt;] __netif_receive_skb_core+0xd8c/0x11f0
 [&lt;ffffffff81d36734&gt;] __netif_receive_skb+0x24/0xb0
 [&lt;ffffffff81d37f67&gt;] process_backlog+0x127/0x280
 [&lt;ffffffff81d36f7b&gt;] net_rx_action+0x33b/0x4f0
 [&lt;ffffffff810c88d4&gt;] __do_softirq+0x184/0x440
 [&lt;ffffffff81f9e86c&gt;] do_softirq_own_stack+0x1c/0x30
 &lt;EOI&gt;
 [&lt;ffffffff810c76fb&gt;] do_softirq.part.18+0x3b/0x40
 [&lt;ffffffff810c8bed&gt;] do_softirq+0x1d/0x20
 [&lt;ffffffff81d30085&gt;] netif_rx_ni+0xe5/0x110
 [&lt;ffffffff8199cc87&gt;] slcan_receive_buf+0x507/0x520
 [&lt;ffffffff8167ef7c&gt;] flush_to_ldisc+0x21c/0x230
 [&lt;ffffffff810e3baf&gt;] process_one_work+0x24f/0x670
 [&lt;ffffffff810e44ed&gt;] worker_thread+0x9d/0x6f0
 [&lt;ffffffff810e4450&gt;] ? rescuer_thread+0x480/0x480
 [&lt;ffffffff810ebafc&gt;] kthread+0x12c/0x150
 [&lt;ffffffff81f9ccef&gt;] ret_from_fork+0x3f/0x70

Reported-by: Zhang Yanmin &lt;yanmin.zhang@intel.com&gt;
Signed-off-by: Eric Dumazet &lt;edumazet@google.com&gt;
Acked-by: Oliver Hartkopp &lt;socketcan@hartkopp.net&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=f1712c73714088a7252d276a57126d56c7d37e64'>Diffstat</a> (limited to 'sound/aoa')</div><table summary='diffstat' class='diffstat'>