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-adp5520.c
/*
* LEDs driver for Analog Devices ADP5520/ADP5501 MFD PMICs
*
* Copyright 2009 Analog Devices Inc.
*
* Loosely derived from leds-da903x:
* Copyright (C) 2008 Compulab, Ltd.
* Mike Rapoport <mike@compulab.co.il>
*
* Copyright (C) 2006-2008 Marvell International Ltd.
* Eric Miao <eric.miao@marvell.com>
*
* Licensed under the GPL-2 or later.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/workqueue.h>
#include <linux/mfd/adp5520.h>
#include <linux/slab.h>
struct adp5520_led {
struct led_classdev cdev;
struct work_struct work;
struct device *master;
enum led_brightness new_brightness;
int id;
int flags;
};
static void adp5520_led_work(struct work_struct *work)
{
struct adp5520_led *led = container_of(work, struct adp5520_led, work);
adp5520_write(led->master, ADP5520_LED1_CURRENT + led->id - 1,
led->new_brightness >> 2);
}
static void adp5520_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct adp5520_led *led;
led = container_of(led_cdev, struct adp5520_led, cdev);
led->new_brightness = value;
schedule_work(&led->work);
}
static int adp5520_led_setup(struct adp5520_led *led)
{
struct device *dev = led->master;
int flags = led->flags;
int ret = 0;
switch (led->id) {
case FLAG_ID_ADP5520_LED1_ADP5501_LED0:
ret |= adp5520_set_bits(dev, ADP5520_LED_TIME,
(flags >> ADP5520_FLAG_OFFT_SHIFT) &
ADP5520_FLAG_OFFT_MASK);
ret |= adp5520_set_bits(dev, ADP5520_LED_CONTROL,
ADP5520_LED1_EN);
break;
case FLAG_ID_ADP5520_LED2_ADP5501_LED1:
ret |= adp5520_set_bits(dev, ADP5520_LED_TIME,
((flags >> ADP5520_FLAG_OFFT_SHIFT) &
ADP5520_FLAG_OFFT_MASK) << 2);
ret |= adp5520_clr_bits(dev, ADP5520_LED_CONTROL,
ADP5520_R3_MODE);
ret |= adp5520_set_bits(dev, ADP5520_LED_CONTROL,
ADP5520_LED2_EN);
break;
case FLAG_ID_ADP5520_LED3_ADP5501_LED2:
ret |= adp5520_set_bits(dev, ADP5520_LED_TIME,
((flags >> ADP5520_FLAG_OFFT_SHIFT) &
ADP5520_FLAG_OFFT_MASK) << 4);
ret |= adp5520_clr_bits(dev, ADP5520_LED_CONTROL,
ADP5520_C3_MODE);
ret |= adp5520_set_bits(dev, ADP5520_LED_CONTROL,
ADP5520_LED3_EN);
break;
}
return ret;
}
static int __devinit adp5520_led_prepare(struct platform_device *pdev)
{
struct adp5520_leds_platform_data *pdata = pdev->dev.platform_data;
struct device *dev = pdev->dev.parent;
int ret = 0;
ret |= adp5520_write(dev, ADP5520_LED1_CURRENT, 0);
ret |= adp5520_write(dev, ADP5520_LED2_CURRENT, 0);
ret |= adp5520_write(dev, ADP5520_LED3_CURRENT, 0);
ret |= adp5520_write(dev, ADP5520_LED_TIME, pdata->led_on_time << 6);
ret |= adp5520_write(dev, ADP5520_LED_FADE, FADE_VAL(pdata->fade_in,
pdata->fade_out));
return ret;
}
static int __devinit adp5520_led_probe(struct platform_device *pdev)
{
struct adp5520_leds_platform_data *pdata = pdev->dev.platform_data;
struct adp5520_led *led, *led_dat;
struct led_info *cur_led;
int ret, i;
if (pdata == NULL) {
dev_err(&pdev->dev, "missing platform data\n");
return -ENODEV;
}
if (pdata->num_leds > ADP5520_01_MAXLEDS) {
dev_err(&pdev->dev, "can't handle more than %d LEDS\n",
ADP5520_01_MAXLEDS);
return -EFAULT;
}
led = kzalloc(sizeof(*led) * pdata->num_leds, GFP_KERNEL);
if (led == NULL) {
dev_err(&pdev->dev, "failed to alloc memory\n");
return -ENOMEM;
}
ret = adp5520_led_prepare(pdev);
if (ret) {
dev_err(&pdev->dev, "failed to write\n");
goto err_free;
}
for (i = 0; i < pdata->num_leds; ++i) {
cur_led = &pdata->leds[i];
led_dat = &led[i];
led_dat->cdev.name = cur_led->name;
led_dat->cdev.default_trigger = cur_led->default_trigger;
led_dat->cdev.brightness_set = adp5520_led_set;
led_dat->cdev.brightness = LED_OFF;
if (cur_led->flags & ADP5520_FLAG_LED_MASK)
led_dat->flags = cur_led->flags;
else
led_dat->flags = i + 1;
led_dat->id = led_dat->flags & ADP5520_FLAG_LED_MASK;
led_dat->master = pdev->dev.parent;
led_dat->new_brightness = LED_OFF;
INIT_WORK(&led_dat->work, adp5520_led_work);
ret = led_classdev_register(led_dat->master, &led_dat->cdev);
if (ret) {
dev_err(&pdev->dev, "failed to register LED %d\n",
led_dat->id);
goto err;
}
ret = adp5520_led_setup(led_dat);
if (ret) {
dev_err(&pdev->dev, "failed to write\n");
i++;
goto err;
}
}
platform_set_drvdata(pdev, led);
return 0;
err:
if (i > 0) {
for (i = i - 1; i >= 0; i--) {
led_classdev_unregister(&led[i].cdev);
cancel_work_sync(&led[i].work);
}
}
err_free:
kfree(led);
return ret;
}
static int __devexit adp5520_led_remove(struct platform_device *pdev)
{
struct adp5520_leds_platform_data *pdata = pdev->dev.platform_data;
struct adp5520_led *led;
int i;
led = platform_get_drvdata(pdev);
adp5520_clr_bits(led->master, ADP5520_LED_CONTROL,
ADP5520_LED1_EN | ADP5520_LED2_EN | ADP5520_LED3_EN);
for (i = 0; i < pdata->num_leds; i++) {
led_classdev_unregister(&led[i].cdev);
cancel_work_sync(&led[i].work);
}
kfree(led);
return 0;
}
static struct platform_driver adp5520_led_driver = {
.driver = {
.name = "adp5520-led",
.owner = THIS_MODULE,
},
.probe = adp5520_led_probe,
.remove = __devexit_p(adp5520_led_remove),
};
module_platform_driver(adp5520_led_driver);
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("LEDS ADP5520(01) Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:adp5520-led");
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...