/*
 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * 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.
 *
 * This program is distributed in the hope that it would 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 the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_SUPPORT_MRLOCK_H__
#define __XFS_SUPPORT_MRLOCK_H__

#include <linux/rwsem.h>

typedef struct {
	struct rw_semaphore	mr_lock;
#if defined(DEBUG) || defined(XFS_WARN)
	int			mr_writer;
#endif
} mrlock_t;

#if defined(DEBUG) || defined(XFS_WARN)
#define mrinit(mrp, name)	\
	do { (mrp)->mr_writer = 0; init_rwsem(&(mrp)->mr_lock); } while (0)
#else
#define mrinit(mrp, name)	\
	do { init_rwsem(&(mrp)->mr_lock); } while (0)
#endif

#define mrlock_init(mrp, t,n,s)	mrinit(mrp, n)
#define mrfree(mrp)		do { } while (0)

static inline void mraccess_nested(mrlock_t *mrp, int subclass)
{
	down_read_nested(&mrp->mr_lock, subclass);
}

static inline void mrupdate_nested(mrlock_t *mrp, int subclass)
{
	down_write_nested(&mrp->mr_lock, subclass);
#if defined(DEBUG) || defined(XFS_WARN)
	mrp->mr_writer = 1;
#endif
}

static inline int mrtryaccess(mrlock_t *mrp)
{
	return down_read_trylock(&mrp->mr_lock);
}

static inline int mrtryupdate(mrlock_t *mrp)
{
	if (!down_write_trylock(&mrp->mr_lock))
		return 0;
#if defined(DEBUG) || defined(XFS_WARN)
	mrp->mr_writer = 1;
#endif
	return 1;
}

static inline void mrunlock_excl(mrlock_t *mrp)
{
#if defined(DEBUG) || defined(XFS_WARN)
	mrp->mr_writer = 0;
#endif
	up_write(&mrp->mr_lock);
}

static inline void mrunlock_shared(mrlock_t *mrp)
{
	up_read(&mrp->mr_lock);
}

static inline void mrdemote(mrlock_t *mrp)
{
#if defined(DEBUG) || defined(XFS_WARN)
	mrp->mr_writer = 0;
#endif
	downgrade_write(&mrp->mr_lock);
}

#endif /* __XFS_SUPPORT_MRLOCK_H__ */
862ec92f6f'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/ipv6/ip6_checksum.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=321fa4ffd94e333657e54037d2511c862ec92f6f'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=321fa4ffd94e333657e54037d2511c862ec92f6f'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/ipv6?h=nds-private-remove&amp;id=321fa4ffd94e333657e54037d2511c862ec92f6f'>ipv6</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/ipv6/ip6_checksum.c?h=nds-private-remove&amp;id=321fa4ffd94e333657e54037d2511c862ec92f6f'>ip6_checksum.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/ipv6/ip6_checksum.c?h=nds-private-remove&amp;id=321fa4ffd94e333657e54037d2511c862ec92f6f&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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>Brendan McGrath &lt;redmcg@redmandi.dyndns.org&gt;</td><td class='right'>2016-11-29 18:59:25 +1100</td></tr>
<tr><th>committer</th><td>Jiri Kosina &lt;jkosina@suse.cz&gt;</td><td class='right'>2016-11-29 16:14:32 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/security/apparmor?id=9ce12d8be12c94334634dd57050444910415e45f'>9ce12d8be12c94334634dd57050444910415e45f</a> (<a href='/cgit.cgi/linux/net-next.git/patch/security/apparmor?id=9ce12d8be12c94334634dd57050444910415e45f'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=9ce12d8be12c94334634dd57050444910415e45f'>565ba7196031833b8d7e4b657b8f42fcd0e3ab74</a> /<a href='/cgit.cgi/linux/net-next.git/tree/security/apparmor?id=9ce12d8be12c94334634dd57050444910415e45f'>security/apparmor</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/security/apparmor?id=e2b6535d47ce223e327de053b804d2e572a98bbc'>e2b6535d47ce223e327de053b804d2e572a98bbc</a> (<a href='/cgit.cgi/linux/net-next.git/diff/security/apparmor?id=9ce12d8be12c94334634dd57050444910415e45f&amp;id2=e2b6535d47ce223e327de053b804d2e572a98bbc'>diff</a>)</td></tr></table>
<div class='commit-subject'>HID: asus: Add i2c touchpad support</div><div class='commit-msg'>Update the hid-asus module to add multitouch support for the Asus i2c touchpad.

This patch aims to resolve the issue raised here:
https://bugzilla.kernel.org/show_bug.cgi?id=120181

The issue is in relation to an Asus touchpad device which currently does not
have multitouch support.

The device currently falls through to the hid-generic driver which
treats the device as a mouse.

This patch aims to add the multitouch support.

[jkosina@suse.cz: move most of the 'patch comment' into actual changelog]
[jkosina@suse.cz: drop hunk that changes -&gt;name of the driver]
Reviewed-by: Benjamin Tissoires &lt;benjamin.tissoires@redhat.com&gt;
Signed-off-by: Brendan McGrath &lt;redmcg@redmandi.dyndns.org&gt;
Signed-off-by: Victor Vlasenko &lt;victor.vlasenko@sysgears.com&gt;
Signed-off-by: Frederik Wenigwieser &lt;frederik.wenigwieser@gmail.com&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=9ce12d8be12c94334634dd57050444910415e45f'>Diffstat</a> (limited to 'security/apparmor')</div><table summary='diffstat' class='diffstat'>