/*
 *	Serial Device Initialisation for Lasi/Asp/Wax/Dino
 *
 *	(c) Copyright Matthew Wilcox <willy@debian.org> 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.
 */

#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/serial_core.h>
#include <linux/signal.h>
#include <linux/types.h>

#include <asm/hardware.h>
#include <asm/parisc-device.h>
#include <asm/io.h>

#include "8250.h"

static int __init serial_init_chip(struct parisc_device *dev)
{
	struct uart_8250_port uart;
	unsigned long address;
	int err;

#ifdef CONFIG_64BIT
	if (!dev->irq && (dev->id.sversion == 0xad))
		dev->irq = iosapic_serial_irq(dev);
#endif

	if (!dev->irq) {
		/* We find some unattached serial ports by walking native
		 * busses.  These should be silently ignored.  Otherwise,
		 * what we have here is a missing parent device, so tell
		 * the user what they're missing.
		 */
		if (parisc_parent(dev)->id.hw_type != HPHW_IOA)
			dev_info(&dev->dev,
				"Serial: device 0x%llx not configured.\n"
				"Enable support for Wax, Lasi, Asp or Dino.\n",
				(unsigned long long)dev->hpa.start);
		return -ENODEV;
	}

	address = dev->hpa.start;
	if (dev->id.sversion != 0x8d)
		address += 0x800;

	memset(&uart, 0, sizeof(uart));
	uart.port.iotype	= UPIO_MEM;
	/* 7.272727MHz on Lasi.  Assumed the same for Dino, Wax and Timi. */
	uart.port.uartclk	= (dev->id.sversion != 0xad) ?
					7272727 : 1843200;
	uart.port.mapbase	= address;
	uart.port.membase	= ioremap_nocache(address, 16);
	uart.port.irq	= dev->irq;
	uart.port.flags	= UPF_BOOT_AUTOCONF;
	uart.port.dev	= &dev->dev;

	err = serial8250_register_8250_port(&uart);
	if (err < 0) {
		dev_warn(&dev->dev,
			"serial8250_register_8250_port returned error %d\n",
			err);
		iounmap(uart.port.membase);
		return err;
	}

	return 0;
}

static struct parisc_device_id serial_tbl[] = {
	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00075 },
	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008c },
	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008d },
	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x000ad },
	{ 0 }
};

/* Hack.  Some machines have SERIAL_0 attached to Lasi and SERIAL_1
 * attached to Dino.  Unfortunately, Dino appears before Lasi in the device
 * tree.  To ensure that ttyS0 == SERIAL_0, we register two drivers; one
 * which only knows about Lasi and then a second which will find all the
 * other serial ports.  HPUX ignores this problem.
 */
static struct parisc_device_id lasi_tbl[] = {
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03B, 0x0008C }, /* C1xx/C1xxL */
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03C, 0x0008C }, /* B132L */
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03D, 0x0008C }, /* B160L */
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03E, 0x0008C }, /* B132L+ */
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03F, 0x0008C }, /* B180L+ */
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x046, 0x0008C }, /* Rocky2 120 */
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x047, 0x0008C }, /* Rocky2 150 */
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x04E, 0x0008C }, /* Kiji L2 132 */
	{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x056, 0x0008C }, /* Raven+ */
	{ 0 }
};


MODULE_DEVICE_TABLE(parisc, serial_tbl);

static struct parisc_driver lasi_driver = {
	.name		= "serial_1",
	.id_table	= lasi_tbl,
	.probe		= serial_init_chip,
};

static struct parisc_driver serial_driver = {
	.name		= "serial",
	.id_table	= serial_tbl,
	.probe		= serial_init_chip,
};

static int __init probe_serial_gsc(void)
{
	register_parisc_driver(&lasi_driver);
	register_parisc_driver(&serial_driver);
	return 0;
}

module_init(probe_serial_gsc);

MODULE_LICENSE("GPL");
ommit/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>LOCK04.boot</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='07cd12945551b63ecb1a349d50a6d69d1d6feb4a'/><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>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>committer</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>07cd12945551b63ecb1a349d50a6d69d1d6feb4a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>75f65eba7eac9277971082a2d5a4cf1370562c0c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot?id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a&amp;id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff</a>)</td></tr></table>
<div class='commit-subject'>cgroup: don't online subsystems before cgroup_name/path() are operational</div><div class='commit-msg'>While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node.  This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.

The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards.  There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.

Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
Reported-by: Konstantin Khlebnikov &lt;khlebnikov@yandex-team.ru&gt;
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") 
Cc: stable@vger.kernel.org # v4.6+
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>Diffstat</a> (limited to 'tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot')</div><table summary='diffstat' class='diffstat'>