/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Copyright Tomi Manninen OH2BNS (oh2bns@sral.fi)
 */
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/socket.h>
#include <linux/timer.h>
#include <net/ax25.h>
#include <linux/skbuff.h>
#include <net/netrom.h>
#include <linux/init.h>

static void nr_loopback_timer(unsigned long);

static struct sk_buff_head loopback_queue;
static DEFINE_TIMER(loopback_timer, nr_loopback_timer, 0, 0);

void __init nr_loopback_init(void)
{
	skb_queue_head_init(&loopback_queue);
}

static inline int nr_loopback_running(void)
{
	return timer_pending(&loopback_timer);
}

int nr_loopback_queue(struct sk_buff *skb)
{
	struct sk_buff *skbn;

	if ((skbn = alloc_skb(skb->len, GFP_ATOMIC)) != NULL) {
		skb_copy_from_linear_data(skb, skb_put(skbn, skb->len), skb->len);
		skb_reset_transport_header(skbn);

		skb_queue_tail(&loopback_queue, skbn);

		if (!nr_loopback_running())
			mod_timer(&loopback_timer, jiffies + 10);
	}

	kfree_skb(skb);
	return 1;
}

static void nr_loopback_timer(unsigned long param)
{
	struct sk_buff *skb;
	ax25_address *nr_dest;
	struct net_device *dev;

	if ((skb = skb_dequeue(&loopback_queue)) != NULL) {
		nr_dest = (ax25_address *)(skb->data + 7);

		dev = nr_dev_get(nr_dest);

		if (dev == NULL || nr_rx_frame(skb, dev) == 0)
			kfree_skb(skb);

		if (dev != NULL)
			dev_put(dev);

		if (!skb_queue_empty(&loopback_queue) && !nr_loopback_running())
			mod_timer(&loopback_timer, jiffies + 10);
	}
}

void __exit nr_loopback_clear(void)
{
	del_timer_sync(&loopback_timer);
	skb_queue_purge(&loopback_queue);
}
ux/net-next.git/tree/sound/soc/intel/boards/skl_rt286.c?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/sound/soc/intel/boards/skl_rt286.c?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/intel/boards/skl_rt286.c?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/soc/intel/boards/skl_rt286.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/intel?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>intel</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/intel/boards?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>boards</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/intel/boards/skl_rt286.c?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>skl_rt286.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'/><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>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2016-12-26 22:58:19 +0100</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-26 17:30:24 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/intel/boards/skl_rt286.c?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>b9d9d6911bd5c370ad4b3aa57d758c093d17aed5</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/intel/boards/skl_rt286.c?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>aa66dffa65f105ab98d5db3707c2262146d7fd8f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/intel/boards/skl_rt286.c?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>sound/soc/intel/boards/skl_rt286.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/intel/boards/skl_rt286.c?id=b4b8664d291ac1998e0f0bcdc96b6397f0fe68b3'>b4b8664d291ac1998e0f0bcdc96b6397f0fe68b3</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/intel/boards/skl_rt286.c?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5&amp;id2=b4b8664d291ac1998e0f0bcdc96b6397f0fe68b3'>diff</a>)</td></tr></table>
<div class='commit-subject'>smp/hotplug: Undo tglxs brainfart</div><div class='commit-msg'>The attempt to prevent overwriting an active state resulted in a
disaster which effectively disables all dynamically allocated hotplug
states.

Cleanup the mess.

Fixes: dc280d936239 ("cpu/hotplug: Prevent overwriting of callbacks")
Reported-by: Markus Trippelsdorf &lt;markus@trippelsdorf.de&gt;
Reported-by: Boris Ostrovsky &lt;boris.ostrovsky@oracle.com&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=b9d9d6911bd5c370ad4b3aa57d758c093d17aed5'>Diffstat</a> (limited to 'sound/soc/intel/boards/skl_rt286.c')</div><table summary='diffstat' class='diffstat'>