Revision 1ab5ecb90cb6a3df1476e052f76a6e8f6511cb3d authored by Stanislav Kinsbursky on 12 March 2012, 02:59:41 UTC, committed by David S. Miller on 13 March 2012, 00:14:00 UTC
v3: added previously removed sock_put() to the tun_release() callback, because sk_release_kernel() doesn't drop the socket reference. v2: sk_release_kernel() used for socket release. Dummy tun_release() is required for sk_release_kernel() ---> sock_release() ---> sock->ops->release() call. TUN was designed to destroy it's socket on network namesapce shutdown. But this will never happen for persistent device, because it's socket holds network namespace. This patch removes of holding network namespace by TUN socket and replaces it by creating socket in init_net and then changing it's net it to desired one. On shutdown socket is moved back to init_net prior to final put. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent de5c374
leds-cobalt-raq.c
/*
* LEDs driver for the Cobalt Raq series.
*
* Copyright (C) 2007 Yoichi Yuasa <yuasa@linux-mips.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/init.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/export.h>
#define LED_WEB 0x04
#define LED_POWER_OFF 0x08
static void __iomem *led_port;
static u8 led_value;
static DEFINE_SPINLOCK(led_value_lock);
static void raq_web_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
unsigned long flags;
spin_lock_irqsave(&led_value_lock, flags);
if (brightness)
led_value |= LED_WEB;
else
led_value &= ~LED_WEB;
writeb(led_value, led_port);
spin_unlock_irqrestore(&led_value_lock, flags);
}
static struct led_classdev raq_web_led = {
.name = "raq::web",
.brightness_set = raq_web_led_set,
};
static void raq_power_off_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
unsigned long flags;
spin_lock_irqsave(&led_value_lock, flags);
if (brightness)
led_value |= LED_POWER_OFF;
else
led_value &= ~LED_POWER_OFF;
writeb(led_value, led_port);
spin_unlock_irqrestore(&led_value_lock, flags);
}
static struct led_classdev raq_power_off_led = {
.name = "raq::power-off",
.brightness_set = raq_power_off_led_set,
.default_trigger = "power-off",
};
static int __devinit cobalt_raq_led_probe(struct platform_device *pdev)
{
struct resource *res;
int retval;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -EBUSY;
led_port = ioremap(res->start, resource_size(res));
if (!led_port)
return -ENOMEM;
retval = led_classdev_register(&pdev->dev, &raq_power_off_led);
if (retval)
goto err_iounmap;
retval = led_classdev_register(&pdev->dev, &raq_web_led);
if (retval)
goto err_unregister;
return 0;
err_unregister:
led_classdev_unregister(&raq_power_off_led);
err_iounmap:
iounmap(led_port);
led_port = NULL;
return retval;
}
static int __devexit cobalt_raq_led_remove(struct platform_device *pdev)
{
led_classdev_unregister(&raq_power_off_led);
led_classdev_unregister(&raq_web_led);
if (led_port) {
iounmap(led_port);
led_port = NULL;
}
return 0;
}
static struct platform_driver cobalt_raq_led_driver = {
.probe = cobalt_raq_led_probe,
.remove = __devexit_p(cobalt_raq_led_remove),
.driver = {
.name = "cobalt-raq-leds",
.owner = THIS_MODULE,
},
};
static int __init cobalt_raq_led_init(void)
{
return platform_driver_register(&cobalt_raq_led_driver);
}
module_init(cobalt_raq_led_init);
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