/*
 * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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.
 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM clk

#if !defined(_TRACE_CLK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_CLK_H

#include <linux/tracepoint.h>

struct clk_core;

DECLARE_EVENT_CLASS(clk,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core),

	TP_STRUCT__entry(
		__string(        name,           core->name       )
	),

	TP_fast_assign(
		__assign_str(name, core->name);
	),

	TP_printk("%s", __get_str(name))
);

DEFINE_EVENT(clk, clk_enable,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core)
);

DEFINE_EVENT(clk, clk_enable_complete,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core)
);

DEFINE_EVENT(clk, clk_disable,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core)
);

DEFINE_EVENT(clk, clk_disable_complete,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core)
);

DEFINE_EVENT(clk, clk_prepare,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core)
);

DEFINE_EVENT(clk, clk_prepare_complete,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core)
);

DEFINE_EVENT(clk, clk_unprepare,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core)
);

DEFINE_EVENT(clk, clk_unprepare_complete,

	TP_PROTO(struct clk_core *core),

	TP_ARGS(core)
);

DECLARE_EVENT_CLASS(clk_rate,

	TP_PROTO(struct clk_core *core, unsigned long rate),

	TP_ARGS(core, rate),

	TP_STRUCT__entry(
		__string(        name,           core->name                )
		__field(unsigned long,           rate                      )
	),

	TP_fast_assign(
		__assign_str(name, core->name);
		__entry->rate = rate;
	),

	TP_printk("%s %lu", __get_str(name), (unsigned long)__entry->rate)
);

DEFINE_EVENT(clk_rate, clk_set_rate,

	TP_PROTO(struct clk_core *core, unsigned long rate),

	TP_ARGS(core, rate)
);

DEFINE_EVENT(clk_rate, clk_set_rate_complete,

	TP_PROTO(struct clk_core *core, unsigned long rate),

	TP_ARGS(core, rate)
);

DECLARE_EVENT_CLASS(clk_parent,

	TP_PROTO(struct clk_core *core, struct clk_core *parent),

	TP_ARGS(core, parent),

	TP_STRUCT__entry(
		__string(        name,           core->name                )
		__string(        pname,          parent->name              )
	),

	TP_fast_assign(
		__assign_str(name, core->name);
		__assign_str(pname, parent->name);
	),

	TP_printk("%s %s", __get_str(name), __get_str(pname))
);

DEFINE_EVENT(clk_parent, clk_set_parent,

	TP_PROTO(struct clk_core *core, struct clk_core *parent),

	TP_ARGS(core, parent)
);

DEFINE_EVENT(clk_parent, clk_set_parent_complete,

	TP_PROTO(struct clk_core *core, struct clk_core *parent),

	TP_ARGS(core, parent)
);

DECLARE_EVENT_CLASS(clk_phase,

	TP_PROTO(struct clk_core *core, int phase),

	TP_ARGS(core, phase),

	TP_STRUCT__entry(
		__string(        name,           core->name                )
		__field(	  int,           phase                     )
	),

	TP_fast_assign(
		__assign_str(name, core->name);
		__entry->phase = phase;
	),

	TP_printk("%s %d", __get_str(name), (int)__entry->phase)
);

DEFINE_EVENT(clk_phase, clk_set_phase,

	TP_PROTO(struct clk_core *core, int phase),

	TP_ARGS(core, phase)
);

DEFINE_EVENT(clk_phase, clk_set_phase_complete,

	TP_PROTO(struct clk_core *core, int phase),

	TP_ARGS(core, phase)
);

#endif /* _TRACE_CLK_H */

/* This part must be outside protection */
#include <trace/define_trace.h>
e='hidden' name='id' value='030305d69fc6963c16003f50d7e8d74b02d0a143'/><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>Bjorn Helgaas &lt;bhelgaas@google.com&gt;</td><td class='right'>2017-01-27 15:00:45 -0600</td></tr>
<tr><th>committer</th><td>Bjorn Helgaas &lt;bhelgaas@google.com&gt;</td><td class='right'>2017-01-27 15:00:45 -0600</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/6fire/pcm.h?h=nds-private-remove&amp;id=030305d69fc6963c16003f50d7e8d74b02d0a143'>030305d69fc6963c16003f50d7e8d74b02d0a143</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/usb/6fire/pcm.h?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=030305d69fc6963c16003f50d7e8d74b02d0a143'>363a4e34d199178769b7e7eeb26ea2620a55847b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/usb/6fire/pcm.h?h=nds-private-remove&amp;id=030305d69fc6963c16003f50d7e8d74b02d0a143'>sound/usb/6fire/pcm.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/6fire/pcm.h?h=nds-private-remove&amp;id=4d191b1b63c209e37bf27938ef365244d3c41084'>4d191b1b63c209e37bf27938ef365244d3c41084</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/usb/6fire/pcm.h?h=nds-private-remove&amp;id=030305d69fc6963c16003f50d7e8d74b02d0a143&amp;id2=4d191b1b63c209e37bf27938ef365244d3c41084'>diff</a>)</td></tr></table>
<div class='commit-subject'>PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies</div><div class='commit-msg'>In a struct pcie_link_state, link-&gt;root points to the pcie_link_state of
the root of the PCIe hierarchy.  For the topmost link, this points to
itself (link-&gt;root = link).  For others, we copy the pointer from the
parent (link-&gt;root = link-&gt;parent-&gt;root).

Previously we recognized that Root Ports originated PCIe hierarchies, but
we treated PCI/PCI-X to PCIe Bridges as being in the middle of the
hierarchy, and when we tried to copy the pointer from link-&gt;parent-&gt;root,
there was no parent, and we dereferenced a NULL pointer:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000090
  IP: [&lt;ffffffff9e424350&gt;] pcie_aspm_init_link_state+0x170/0x820

Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just
like Root Ports do, so link-&gt;root for these devices should also point to
itself.

Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181
Tested-by: lists@ssl-mail.com
Tested-by: Jayachandran C. &lt;jnair@caviumnetworks.com&gt;
Signed-off-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt;
CC: stable@vger.kernel.org	# v4.2+</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=030305d69fc6963c16003f50d7e8d74b02d0a143'>Diffstat</a> (limited to 'sound/usb/6fire/pcm.h')</div><table summary='diffstat' class='diffstat'>