/*
 *   Copyright (C) International Business Machines Corp., 2000-2001
 *   Portions Copyright (C) Christoph Hellwig, 2001-2002
 *
 *   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.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#ifndef _H_JFS_LOCK
#define _H_JFS_LOCK

#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/sched.h>

/*
 *	jfs_lock.h
 */

/*
 * Conditional sleep where condition is protected by spinlock
 *
 * lock_cmd and unlock_cmd take and release the spinlock
 */
#define __SLEEP_COND(wq, cond, lock_cmd, unlock_cmd)	\
do {							\
	DECLARE_WAITQUEUE(__wait, current);		\
							\
	add_wait_queue(&wq, &__wait);			\
	for (;;) {					\
		set_current_state(TASK_UNINTERRUPTIBLE);\
		if (cond)				\
			break;				\
		unlock_cmd;				\
		io_schedule();				\
		lock_cmd;				\
	}						\
	__set_current_state(TASK_RUNNING);			\
	remove_wait_queue(&wq, &__wait);		\
} while (0)

#endif				/* _H_JFS_LOCK */
'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/net/6lowpan/nhc_ghc_udp.c'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/net/6lowpan/nhc_ghc_udp.c?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan/nhc_ghc_udp.c?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/6lowpan/nhc_ghc_udp.c?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/6lowpan/nhc_ghc_udp.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>6lowpan</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan/nhc_ghc_udp.c?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>nhc_ghc_udp.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='4e5b54f127426c82dc2816340c26d951a5bb3429'/><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>Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt;</td><td class='right'>2016-12-18 14:35:45 +0100</td></tr>
<tr><th>committer</th><td>Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt;</td><td class='right'>2017-01-30 10:17:17 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan/nhc_ghc_udp.c?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>4e5b54f127426c82dc2816340c26d951a5bb3429</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/6lowpan/nhc_ghc_udp.c?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>cc3a8f7e335cf12880bc8d1a1e2066f6cfe0a68e</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/6lowpan/nhc_ghc_udp.c?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>net/6lowpan/nhc_ghc_udp.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan/nhc_ghc_udp.c?id=566cf877a1fcb6d6dc0126b076aad062054c2637'>566cf877a1fcb6d6dc0126b076aad062054c2637</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/6lowpan/nhc_ghc_udp.c?id=4e5b54f127426c82dc2816340c26d951a5bb3429&amp;id2=566cf877a1fcb6d6dc0126b076aad062054c2637'>diff</a>)</td></tr></table>
<div class='commit-subject'>drm: prevent double-(un)registration for connectors</div><div class='commit-msg'>If we're unlucky then the registration from a hotplugged connector
might race with the final registration step on driver load. And since
MST topology discover is asynchronous that's even somewhat likely.

v2: Also update the kerneldoc for @registered!

v3: Review from Chris:
- Improve kerneldoc for late_register/early_unregister callbacks.
- Use mutex_destroy.

Reviewed-by: Chris Wilson &lt;chris@chris-wilson.co.uk&gt;
Cc: Chris Wilson &lt;chris@chris-wilson.co.uk&gt;
Reviewed-by: Sean Paul &lt;seanpaul@chromium.org&gt;
Reported-by: Chris Wilson &lt;chris@chris-wilson.co.uk&gt;
Signed-off-by: Daniel Vetter &lt;daniel.vetter@intel.com&gt;
Link: http://patchwork.freedesktop.org/patch/msgid/20161218133545.2106-1-daniel.vetter@ffwll.ch
(cherry picked from commit e73ab00e9a0f1731f34d0620a9c55f5c30c4ad4e)
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>Diffstat</a> (limited to 'net/6lowpan/nhc_ghc_udp.c')</div><table summary='diffstat' class='diffstat'>