litmus-rt.git - The LITMUS^RT kernel.

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author	Sage Weil <sage@newdream.net>	2010-07-22 17:11:56 -0400
committer	Sage Weil <sage@newdream.net>	2010-07-23 13:02:07 -0400
commit	8c696737aa61316a252c4514d09dd163f1464d33 (patch)
tree	8f130d45380ac3f8bd897bf78bc7650c1bbb41b5 /scripts/tracing/draw_functrace.py
parent	bc4fdca85734d12cd2c7a25c52323ef6e6e5adef (diff)

ceph: fix leak of dentry in ceph_init_dentry() error path

If we fail to allocate a ceph_dentry_info, don't leak the dn reference. Signed-off-by: Sage Weil <sage@newdream.net>

Diffstat (limited to 'scripts/tracing/draw_functrace.py')

0 files changed, 0 insertions, 0 deletions

/* * Battery and Power Management code for the Sharp SL-5x00 * * Copyright (C) 2009 Thomas Kunze * * based on tosa_battery.c * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/power_supply.h> #include <linux/delay.h> #include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/gpio.h> #include <linux/mfd/ucb1x00.h> #include <asm/mach/sharpsl_param.h> #include <asm/mach-types.h> #include <mach/collie.h> static DEFINE_MUTEX(bat_lock); /* protects gpio pins */ static struct work_struct bat_work; static struct ucb1x00 *ucb; struct collie_bat { int status; struct power_supply psy; int full_chrg; struct mutex work_lock; /* protects data */ bool (*is_present)(struct collie_bat *bat); int gpio_full; int gpio_charge_on; int technology; int gpio_bat; int adc_bat; int adc_bat_divider; int bat_max; int bat_min; int gpio_temp; int adc_temp; int adc_temp_divider; }; static struct collie_bat collie_bat_main; static unsigned long collie_read_bat(struct collie_bat *bat) { unsigned long value = 0; if (bat->gpio_bat < 0 || bat->adc_bat < 0) return 0; mutex_lock(&bat_lock); gpio_set_value(bat->gpio_bat, 1); msleep(5); ucb1x00_adc_enable(ucb); value = ucb1x00_adc_read(ucb, bat->adc_bat, UCB_SYNC); ucb1x00_adc_disable(ucb); gpio_set_value(bat->gpio_bat, 0); mutex_unlock(&bat_lock); value = value * 1000000 / bat->adc_bat_divider; return value; } static unsigned long collie_read_temp(struct collie_bat *bat) { unsigned long value = 0; if (bat->gpio_temp < 0 || bat->adc_temp < 0) return 0; mutex_lock(&bat_lock); gpio_set_value(bat->gpio_temp, 1); msleep(5); ucb1x00_adc_enable(ucb); value = ucb1x00_adc_read(ucb, bat->adc_temp, UCB_SYNC); ucb1x00_adc_disable(ucb); gpio_set_value(bat->gpio_temp, 0); mutex_unlock(&bat_lock); value = value * 10000 / bat->adc_temp_divider; return value; } static int collie_bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { int ret = 0; struct collie_bat *bat = container_of(psy, struct collie_bat, psy); if (bat->is_present && !bat->is_present(bat) && psp != POWER_SUPPLY_PROP_PRESENT) { return -ENODEV; } switch (psp) { case POWER_SUPPLY_PROP_STATUS: val->intval = bat->status; break; case POWER_SUPPLY_PROP_TECHNOLOGY: val->intval = bat->technology; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: val->intval = collie_read_bat(bat); break; case POWER_SUPPLY_PROP_VOLTAGE_MAX: if (bat->full_chrg == -1) val->intval = bat->bat_max; else val->intval = bat->full_chrg; break; case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: val->intval = bat->bat_max; break; case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: val->intval = bat->bat_min; break; case POWER_SUPPLY_PROP_TEMP: val->intval = collie_read_temp(bat); break; case POWER_SUPPLY_PROP_PRESENT: val->intval = bat->is_present ? bat->is_present(bat) : 1; break; default: ret = -EINVAL; break; } return ret; } static void collie_bat_external_power_changed(struct power_supply *psy) { schedule_work(&bat_work); } static irqreturn_t collie_bat_gpio_isr(int irq, void *data) { pr_info("collie_bat_gpio irq: %d\n", gpio_get_value(irq_to_gpio(irq))); schedule_work(&bat_work); return IRQ_HANDLED; } static void collie_bat_update(struct collie_bat *bat) { int old; struct power_supply *psy = &bat->psy; mutex_lock(&bat->work_lock); old = bat->status; if (bat->is_present && !bat->is_present(bat)) { printk(KERN_NOTICE "%s not present\n", psy->name); bat->status = POWER_SUPPLY_STATUS_UNKNOWN; bat->full_chrg = -1; } else if (power_supply_am_i_supplied(psy)) { if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) { gpio_set_value(bat->gpio_charge_on, 1); mdelay(15); } if (gpio_get_value(bat->gpio_full)) { if (old == POWER_SUPPLY_STATUS_CHARGING || bat->full_chrg == -1) bat->full_chrg = collie_read_bat(bat); gpio_set_value(bat->gpio_charge_on, 0); bat->status = POWER_SUPPLY_STATUS_FULL; } else { gpio_set_value(bat->gpio_charge_on, 1); bat->status = POWER_SUPPLY_STATUS_CHARGING; } } else { gpio_set_value(bat->gpio_charge_on, 0); bat->status = POWER_SUPPLY_STATUS_DISCHARGING; } if (old != bat->status) power_supply_changed(psy); mutex_unlock(&bat->work_lock); } static void collie_bat_work(struct work_struct *work) { collie_bat_update(&collie_bat_main); } static enum power_supply_property collie_bat_main_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, POWER_SUPPLY_PROP_VOLTAGE_MAX, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_TEMP, }; static enum power_supply_property collie_bat_bu_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, POWER_SUPPLY_PROP_VOLTAGE_MAX, POWER_SUPPLY_PROP_PRESENT, }; static struct collie_bat collie_bat_main = { .status = POWER_SUPPLY_STATUS_DISCHARGING, .full_chrg = -1, .psy = { .name = "main-battery", .type = POWER_SUPPLY_TYPE_BATTERY, .properties = collie_bat_main_props, .num_properties = ARRAY_SIZE(collie_bat_main_props), .get_property = collie_bat_get_property, .external_power_changed = collie_bat_external_power_changed, .use_for_apm = 1, }, .gpio_full = COLLIE_GPIO_CO, .gpio_charge_on = COLLIE_GPIO_CHARGE_ON, .technology = POWER_SUPPLY_TECHNOLOGY_LIPO, .gpio_bat = COLLIE_GPIO_MBAT_ON, .adc_bat = UCB_ADC_INP_AD1, .adc_bat_divider = 155, .bat_max = 4310000, .bat_min = 1551 * 1000000 / 414, .gpio_temp = COLLIE_GPIO_TMP_ON, .adc_temp = UCB_ADC_INP_AD0, .adc_temp_divider = 10000, }; static struct collie_bat collie_bat_bu = { .status = POWER_SUPPLY_STATUS_UNKNOWN, .full_chrg = -1, .psy = { .name = "backup-battery", .type = POWER_SUPPLY_TYPE_BATTERY, .properties = collie_bat_bu_props, .num_properties = ARRAY_SIZE(collie_bat_bu_props), .get_property = collie_bat_get_property, .external_power_changed = collie_bat_external_power_changed, }, .gpio_full = -1, .gpio_charge_on = -1, .technology = POWER_SUPPLY_TECHNOLOGY_LiMn, .gpio_bat = COLLIE_GPIO_BBAT_ON, .adc_bat = UCB_ADC_INP_AD1, .adc_bat_divider = 155, .bat_max = 3000000, .bat_min = 1900000, .gpio_temp = -1, .adc_temp = -1, .adc_temp_divider = -1, }; static struct { int gpio; char *name; bool output; int value; } gpios[] = { { COLLIE_GPIO_CO, "main battery full", 0, 0 }, { COLLIE_GPIO_MAIN_BAT_LOW, "main battery low", 0, 0 }, { COLLIE_GPIO_CHARGE_ON, "main charge on", 1, 0 }, { COLLIE_GPIO_MBAT_ON, "main battery", 1, 0 }, { COLLIE_GPIO_TMP_ON, "main battery temp", 1, 0 }, { COLLIE_GPIO_BBAT_ON, "backup battery", 1, 0 }, }; #ifdef CONFIG_PM static int collie_bat_suspend(struct ucb1x00_dev *dev, pm_message_t state) { /* flush all pending status updates */ flush_scheduled_work(); return 0; } static int collie_bat_resume(struct ucb1x00_dev *dev) { /* things may have changed while we were away */ schedule_work(&bat_work); return 0; } #else #define collie_bat_suspend NULL #define collie_bat_resume NULL #endif static int __devinit collie_bat_probe(struct ucb1x00_dev *dev) { int ret; int i; if (!machine_is_collie()) return -ENODEV; ucb = dev->ucb; for (i = 0; i < ARRAY_SIZE(gpios); i++) { ret = gpio_request(gpios[i].gpio, gpios[i].name); if (ret) { i--; goto err_gpio; } if (gpios[i].output) ret = gpio_direction_output(gpios[i].gpio, gpios[i].value); else ret = gpio_direction_input(gpios[i].gpio); if (ret) goto err_gpio; } mutex_init(&collie_bat_main.work_lock); INIT_WORK(&bat_work, collie_bat_work); ret = power_supply_register(&dev->ucb->dev, &collie_bat_main.psy); if (ret) goto err_psy_reg_main; ret = power_supply_register(&dev->ucb->dev, &collie_bat_bu.psy); if (ret) goto err_psy_reg_bu; ret = request_irq(gpio_to_irq(COLLIE_GPIO_CO), collie_bat_gpio_isr, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "main full", &collie_bat_main); if (!ret) { schedule_work(&bat_work); return 0; } power_supply_unregister(&collie_bat_bu.psy); err_psy_reg_bu: power_supply_unregister(&collie_bat_main.psy); err_psy_reg_main: /* see comment in collie_bat_remove */ flush_scheduled_work(); i--; err_gpio: for (; i >= 0; i--) gpio_free(gpios[i].gpio); return ret; } static void __devexit collie_bat_remove(struct ucb1x00_dev *dev) { int i; free_irq(gpio_to_irq(COLLIE_GPIO_CO), &collie_bat_main); power_supply_unregister(&collie_bat_bu.psy); power_supply_unregister(&collie_bat_main.psy); /* * now flush all pending work. * we won't get any more schedules, since all * sources (isr and external_power_changed) * are unregistered now. */ flush_scheduled_work(); for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i--) gpio_free(gpios[i].gpio); } static struct ucb1x00_driver collie_bat_driver = { .add = collie_bat_probe, .remove = __devexit_p(collie_bat_remove), .suspend = collie_bat_suspend, .resume = collie_bat_resume, }; static int __init collie_bat_init(void) { return ucb1x00_register_driver(&collie_bat_driver); } static void __exit collie_bat_exit(void) { ucb1x00_unregister_driver(&collie_bat_driver); } module_init(collie_bat_init); module_exit(collie_bat_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Thomas Kunze"); MODULE_DESCRIPTION("Collie battery driver");


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