Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
645
drivers/sbus/char/bbc_envctrl.c
Normal file
645
drivers/sbus/char/bbc_envctrl.c
Normal file
@@ -0,0 +1,645 @@
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/* $Id: bbc_envctrl.c,v 1.4 2001/04/06 16:48:08 davem Exp $
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* bbc_envctrl.c: UltraSPARC-III environment control driver.
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*
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* Copyright (C) 2001 David S. Miller (davem@redhat.com)
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <asm/oplib.h>
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#include <asm/ebus.h>
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#define __KERNEL_SYSCALLS__
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static int errno;
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#include <asm/unistd.h>
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#include "bbc_i2c.h"
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#include "max1617.h"
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#undef ENVCTRL_TRACE
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/* WARNING: Making changes to this driver is very dangerous.
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* If you misprogram the sensor chips they can
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* cut the power on you instantly.
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*/
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/* Two temperature sensors exist in the SunBLADE-1000 enclosure.
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* Both are implemented using max1617 i2c devices. Each max1617
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* monitors 2 temperatures, one for one of the cpu dies and the other
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* for the ambient temperature.
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*
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* The max1617 is capable of being programmed with power-off
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* temperature values, one low limit and one high limit. These
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* can be controlled independently for the cpu or ambient temperature.
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* If a limit is violated, the power is simply shut off. The frequency
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* with which the max1617 does temperature sampling can be controlled
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* as well.
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*
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* Three fans exist inside the machine, all three are controlled with
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* an i2c digital to analog converter. There is a fan directed at the
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* two processor slots, another for the rest of the enclosure, and the
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* third is for the power supply. The first two fans may be speed
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* controlled by changing the voltage fed to them. The third fan may
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* only be completely off or on. The third fan is meant to only be
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* disabled/enabled when entering/exiting the lowest power-saving
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* mode of the machine.
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*
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* An environmental control kernel thread periodically monitors all
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* temperature sensors. Based upon the samples it will adjust the
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* fan speeds to try and keep the system within a certain temperature
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* range (the goal being to make the fans as quiet as possible without
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* allowing the system to get too hot).
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*
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* If the temperature begins to rise/fall outside of the acceptable
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* operating range, a periodic warning will be sent to the kernel log.
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* The fans will be put on full blast to attempt to deal with this
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* situation. After exceeding the acceptable operating range by a
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* certain threshold, the kernel thread will shut down the system.
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* Here, the thread is attempting to shut the machine down cleanly
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* before the hardware based power-off event is triggered.
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*/
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/* These settings are in Celsius. We use these defaults only
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* if we cannot interrogate the cpu-fru SEEPROM.
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*/
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struct temp_limits {
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s8 high_pwroff, high_shutdown, high_warn;
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s8 low_warn, low_shutdown, low_pwroff;
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};
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static struct temp_limits cpu_temp_limits[2] = {
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{ 100, 85, 80, 5, -5, -10 },
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{ 100, 85, 80, 5, -5, -10 },
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};
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static struct temp_limits amb_temp_limits[2] = {
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{ 65, 55, 40, 5, -5, -10 },
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{ 65, 55, 40, 5, -5, -10 },
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};
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enum fan_action { FAN_SLOWER, FAN_SAME, FAN_FASTER, FAN_FULLBLAST, FAN_STATE_MAX };
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struct bbc_cpu_temperature {
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struct bbc_cpu_temperature *next;
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struct bbc_i2c_client *client;
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int index;
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/* Current readings, and history. */
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s8 curr_cpu_temp;
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s8 curr_amb_temp;
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s8 prev_cpu_temp;
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s8 prev_amb_temp;
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s8 avg_cpu_temp;
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s8 avg_amb_temp;
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int sample_tick;
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enum fan_action fan_todo[2];
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#define FAN_AMBIENT 0
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#define FAN_CPU 1
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};
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struct bbc_cpu_temperature *all_bbc_temps;
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struct bbc_fan_control {
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struct bbc_fan_control *next;
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struct bbc_i2c_client *client;
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int index;
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int psupply_fan_on;
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int cpu_fan_speed;
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int system_fan_speed;
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};
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struct bbc_fan_control *all_bbc_fans;
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#define CPU_FAN_REG 0xf0
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#define SYS_FAN_REG 0xf2
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#define PSUPPLY_FAN_REG 0xf4
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#define FAN_SPEED_MIN 0x0c
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#define FAN_SPEED_MAX 0x3f
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#define PSUPPLY_FAN_ON 0x1f
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#define PSUPPLY_FAN_OFF 0x00
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static void set_fan_speeds(struct bbc_fan_control *fp)
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{
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/* Put temperatures into range so we don't mis-program
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* the hardware.
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*/
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if (fp->cpu_fan_speed < FAN_SPEED_MIN)
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fp->cpu_fan_speed = FAN_SPEED_MIN;
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if (fp->cpu_fan_speed > FAN_SPEED_MAX)
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fp->cpu_fan_speed = FAN_SPEED_MAX;
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if (fp->system_fan_speed < FAN_SPEED_MIN)
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fp->system_fan_speed = FAN_SPEED_MIN;
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if (fp->system_fan_speed > FAN_SPEED_MAX)
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fp->system_fan_speed = FAN_SPEED_MAX;
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#ifdef ENVCTRL_TRACE
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printk("fan%d: Changed fan speed to cpu(%02x) sys(%02x)\n",
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fp->index,
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fp->cpu_fan_speed, fp->system_fan_speed);
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#endif
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bbc_i2c_writeb(fp->client, fp->cpu_fan_speed, CPU_FAN_REG);
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bbc_i2c_writeb(fp->client, fp->system_fan_speed, SYS_FAN_REG);
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bbc_i2c_writeb(fp->client,
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(fp->psupply_fan_on ?
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PSUPPLY_FAN_ON : PSUPPLY_FAN_OFF),
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PSUPPLY_FAN_REG);
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}
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static void get_current_temps(struct bbc_cpu_temperature *tp)
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{
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tp->prev_amb_temp = tp->curr_amb_temp;
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bbc_i2c_readb(tp->client,
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(unsigned char *) &tp->curr_amb_temp,
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MAX1617_AMB_TEMP);
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tp->prev_cpu_temp = tp->curr_cpu_temp;
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bbc_i2c_readb(tp->client,
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(unsigned char *) &tp->curr_cpu_temp,
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MAX1617_CPU_TEMP);
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#ifdef ENVCTRL_TRACE
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printk("temp%d: cpu(%d C) amb(%d C)\n",
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tp->index,
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(int) tp->curr_cpu_temp, (int) tp->curr_amb_temp);
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#endif
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}
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static void do_envctrl_shutdown(struct bbc_cpu_temperature *tp)
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{
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static int shutting_down = 0;
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static char *envp[] = { "HOME=/", "TERM=linux", "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL };
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char *argv[] = { "/sbin/shutdown", "-h", "now", NULL };
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char *type = "???";
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s8 val = -1;
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if (shutting_down != 0)
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return;
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if (tp->curr_amb_temp >= amb_temp_limits[tp->index].high_shutdown ||
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tp->curr_amb_temp < amb_temp_limits[tp->index].low_shutdown) {
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type = "ambient";
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val = tp->curr_amb_temp;
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} else if (tp->curr_cpu_temp >= cpu_temp_limits[tp->index].high_shutdown ||
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tp->curr_cpu_temp < cpu_temp_limits[tp->index].low_shutdown) {
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type = "CPU";
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val = tp->curr_cpu_temp;
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}
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printk(KERN_CRIT "temp%d: Outside of safe %s "
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"operating temperature, %d C.\n",
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tp->index, type, val);
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printk(KERN_CRIT "kenvctrld: Shutting down the system now.\n");
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shutting_down = 1;
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if (execve("/sbin/shutdown", argv, envp) < 0)
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printk(KERN_CRIT "envctrl: shutdown execution failed\n");
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}
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#define WARN_INTERVAL (30 * HZ)
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static void analyze_ambient_temp(struct bbc_cpu_temperature *tp, unsigned long *last_warn, int tick)
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{
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int ret = 0;
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if (time_after(jiffies, (*last_warn + WARN_INTERVAL))) {
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if (tp->curr_amb_temp >=
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amb_temp_limits[tp->index].high_warn) {
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printk(KERN_WARNING "temp%d: "
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"Above safe ambient operating temperature, %d C.\n",
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tp->index, (int) tp->curr_amb_temp);
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ret = 1;
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} else if (tp->curr_amb_temp <
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amb_temp_limits[tp->index].low_warn) {
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printk(KERN_WARNING "temp%d: "
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"Below safe ambient operating temperature, %d C.\n",
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tp->index, (int) tp->curr_amb_temp);
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ret = 1;
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}
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if (ret)
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*last_warn = jiffies;
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} else if (tp->curr_amb_temp >= amb_temp_limits[tp->index].high_warn ||
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tp->curr_amb_temp < amb_temp_limits[tp->index].low_warn)
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ret = 1;
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/* Now check the shutdown limits. */
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if (tp->curr_amb_temp >= amb_temp_limits[tp->index].high_shutdown ||
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tp->curr_amb_temp < amb_temp_limits[tp->index].low_shutdown) {
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do_envctrl_shutdown(tp);
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ret = 1;
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}
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if (ret) {
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tp->fan_todo[FAN_AMBIENT] = FAN_FULLBLAST;
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} else if ((tick & (8 - 1)) == 0) {
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s8 amb_goal_hi = amb_temp_limits[tp->index].high_warn - 10;
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s8 amb_goal_lo;
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amb_goal_lo = amb_goal_hi - 3;
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/* We do not try to avoid 'too cold' events. Basically we
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* only try to deal with over-heating and fan noise reduction.
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*/
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if (tp->avg_amb_temp < amb_goal_hi) {
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if (tp->avg_amb_temp >= amb_goal_lo)
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tp->fan_todo[FAN_AMBIENT] = FAN_SAME;
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else
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tp->fan_todo[FAN_AMBIENT] = FAN_SLOWER;
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} else {
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tp->fan_todo[FAN_AMBIENT] = FAN_FASTER;
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}
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} else {
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tp->fan_todo[FAN_AMBIENT] = FAN_SAME;
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}
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}
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static void analyze_cpu_temp(struct bbc_cpu_temperature *tp, unsigned long *last_warn, int tick)
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{
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int ret = 0;
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if (time_after(jiffies, (*last_warn + WARN_INTERVAL))) {
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if (tp->curr_cpu_temp >=
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cpu_temp_limits[tp->index].high_warn) {
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printk(KERN_WARNING "temp%d: "
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"Above safe CPU operating temperature, %d C.\n",
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tp->index, (int) tp->curr_cpu_temp);
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ret = 1;
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} else if (tp->curr_cpu_temp <
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cpu_temp_limits[tp->index].low_warn) {
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printk(KERN_WARNING "temp%d: "
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"Below safe CPU operating temperature, %d C.\n",
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tp->index, (int) tp->curr_cpu_temp);
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ret = 1;
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}
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if (ret)
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*last_warn = jiffies;
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} else if (tp->curr_cpu_temp >= cpu_temp_limits[tp->index].high_warn ||
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tp->curr_cpu_temp < cpu_temp_limits[tp->index].low_warn)
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ret = 1;
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/* Now check the shutdown limits. */
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if (tp->curr_cpu_temp >= cpu_temp_limits[tp->index].high_shutdown ||
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tp->curr_cpu_temp < cpu_temp_limits[tp->index].low_shutdown) {
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do_envctrl_shutdown(tp);
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ret = 1;
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}
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if (ret) {
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tp->fan_todo[FAN_CPU] = FAN_FULLBLAST;
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} else if ((tick & (8 - 1)) == 0) {
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s8 cpu_goal_hi = cpu_temp_limits[tp->index].high_warn - 10;
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s8 cpu_goal_lo;
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cpu_goal_lo = cpu_goal_hi - 3;
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/* We do not try to avoid 'too cold' events. Basically we
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* only try to deal with over-heating and fan noise reduction.
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*/
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if (tp->avg_cpu_temp < cpu_goal_hi) {
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if (tp->avg_cpu_temp >= cpu_goal_lo)
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tp->fan_todo[FAN_CPU] = FAN_SAME;
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else
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tp->fan_todo[FAN_CPU] = FAN_SLOWER;
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} else {
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tp->fan_todo[FAN_CPU] = FAN_FASTER;
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}
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} else {
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tp->fan_todo[FAN_CPU] = FAN_SAME;
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}
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}
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static void analyze_temps(struct bbc_cpu_temperature *tp, unsigned long *last_warn)
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{
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tp->avg_amb_temp = (s8)((int)((int)tp->avg_amb_temp + (int)tp->curr_amb_temp) / 2);
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tp->avg_cpu_temp = (s8)((int)((int)tp->avg_cpu_temp + (int)tp->curr_cpu_temp) / 2);
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analyze_ambient_temp(tp, last_warn, tp->sample_tick);
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analyze_cpu_temp(tp, last_warn, tp->sample_tick);
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tp->sample_tick++;
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}
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||||
static enum fan_action prioritize_fan_action(int which_fan)
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{
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struct bbc_cpu_temperature *tp;
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enum fan_action decision = FAN_STATE_MAX;
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|
||||
/* Basically, prioritize what the temperature sensors
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* recommend we do, and perform that action on all the
|
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* fans.
|
||||
*/
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for (tp = all_bbc_temps; tp; tp = tp->next) {
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if (tp->fan_todo[which_fan] == FAN_FULLBLAST) {
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decision = FAN_FULLBLAST;
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break;
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||||
}
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if (tp->fan_todo[which_fan] == FAN_SAME &&
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decision != FAN_FASTER)
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||||
decision = FAN_SAME;
|
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else if (tp->fan_todo[which_fan] == FAN_FASTER)
|
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decision = FAN_FASTER;
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||||
else if (decision != FAN_FASTER &&
|
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decision != FAN_SAME &&
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tp->fan_todo[which_fan] == FAN_SLOWER)
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decision = FAN_SLOWER;
|
||||
}
|
||||
if (decision == FAN_STATE_MAX)
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||||
decision = FAN_SAME;
|
||||
|
||||
return decision;
|
||||
}
|
||||
|
||||
static int maybe_new_ambient_fan_speed(struct bbc_fan_control *fp)
|
||||
{
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||||
enum fan_action decision = prioritize_fan_action(FAN_AMBIENT);
|
||||
int ret;
|
||||
|
||||
if (decision == FAN_SAME)
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return 0;
|
||||
|
||||
ret = 1;
|
||||
if (decision == FAN_FULLBLAST) {
|
||||
if (fp->system_fan_speed >= FAN_SPEED_MAX)
|
||||
ret = 0;
|
||||
else
|
||||
fp->system_fan_speed = FAN_SPEED_MAX;
|
||||
} else {
|
||||
if (decision == FAN_FASTER) {
|
||||
if (fp->system_fan_speed >= FAN_SPEED_MAX)
|
||||
ret = 0;
|
||||
else
|
||||
fp->system_fan_speed += 2;
|
||||
} else {
|
||||
int orig_speed = fp->system_fan_speed;
|
||||
|
||||
if (orig_speed <= FAN_SPEED_MIN ||
|
||||
orig_speed <= (fp->cpu_fan_speed - 3))
|
||||
ret = 0;
|
||||
else
|
||||
fp->system_fan_speed -= 1;
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int maybe_new_cpu_fan_speed(struct bbc_fan_control *fp)
|
||||
{
|
||||
enum fan_action decision = prioritize_fan_action(FAN_CPU);
|
||||
int ret;
|
||||
|
||||
if (decision == FAN_SAME)
|
||||
return 0;
|
||||
|
||||
ret = 1;
|
||||
if (decision == FAN_FULLBLAST) {
|
||||
if (fp->cpu_fan_speed >= FAN_SPEED_MAX)
|
||||
ret = 0;
|
||||
else
|
||||
fp->cpu_fan_speed = FAN_SPEED_MAX;
|
||||
} else {
|
||||
if (decision == FAN_FASTER) {
|
||||
if (fp->cpu_fan_speed >= FAN_SPEED_MAX)
|
||||
ret = 0;
|
||||
else {
|
||||
fp->cpu_fan_speed += 2;
|
||||
if (fp->system_fan_speed <
|
||||
(fp->cpu_fan_speed - 3))
|
||||
fp->system_fan_speed =
|
||||
fp->cpu_fan_speed - 3;
|
||||
}
|
||||
} else {
|
||||
if (fp->cpu_fan_speed <= FAN_SPEED_MIN)
|
||||
ret = 0;
|
||||
else
|
||||
fp->cpu_fan_speed -= 1;
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void maybe_new_fan_speeds(struct bbc_fan_control *fp)
|
||||
{
|
||||
int new;
|
||||
|
||||
new = maybe_new_ambient_fan_speed(fp);
|
||||
new |= maybe_new_cpu_fan_speed(fp);
|
||||
|
||||
if (new)
|
||||
set_fan_speeds(fp);
|
||||
}
|
||||
|
||||
static void fans_full_blast(void)
|
||||
{
|
||||
struct bbc_fan_control *fp;
|
||||
|
||||
/* Since we will not be monitoring things anymore, put
|
||||
* the fans on full blast.
|
||||
*/
|
||||
for (fp = all_bbc_fans; fp; fp = fp->next) {
|
||||
fp->cpu_fan_speed = FAN_SPEED_MAX;
|
||||
fp->system_fan_speed = FAN_SPEED_MAX;
|
||||
fp->psupply_fan_on = 1;
|
||||
set_fan_speeds(fp);
|
||||
}
|
||||
}
|
||||
|
||||
#define POLL_INTERVAL (5 * 1000)
|
||||
static unsigned long last_warning_jiffies;
|
||||
static struct task_struct *kenvctrld_task;
|
||||
|
||||
static int kenvctrld(void *__unused)
|
||||
{
|
||||
daemonize("kenvctrld");
|
||||
allow_signal(SIGKILL);
|
||||
kenvctrld_task = current;
|
||||
|
||||
printk(KERN_INFO "bbc_envctrl: kenvctrld starting...\n");
|
||||
last_warning_jiffies = jiffies - WARN_INTERVAL;
|
||||
for (;;) {
|
||||
struct bbc_cpu_temperature *tp;
|
||||
struct bbc_fan_control *fp;
|
||||
|
||||
msleep_interruptible(POLL_INTERVAL);
|
||||
if (signal_pending(current))
|
||||
break;
|
||||
|
||||
for (tp = all_bbc_temps; tp; tp = tp->next) {
|
||||
get_current_temps(tp);
|
||||
analyze_temps(tp, &last_warning_jiffies);
|
||||
}
|
||||
for (fp = all_bbc_fans; fp; fp = fp->next)
|
||||
maybe_new_fan_speeds(fp);
|
||||
}
|
||||
printk(KERN_INFO "bbc_envctrl: kenvctrld exiting...\n");
|
||||
|
||||
fans_full_blast();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void attach_one_temp(struct linux_ebus_child *echild, int temp_idx)
|
||||
{
|
||||
struct bbc_cpu_temperature *tp = kmalloc(sizeof(*tp), GFP_KERNEL);
|
||||
|
||||
if (!tp)
|
||||
return;
|
||||
memset(tp, 0, sizeof(*tp));
|
||||
tp->client = bbc_i2c_attach(echild);
|
||||
if (!tp->client) {
|
||||
kfree(tp);
|
||||
return;
|
||||
}
|
||||
|
||||
tp->index = temp_idx;
|
||||
{
|
||||
struct bbc_cpu_temperature **tpp = &all_bbc_temps;
|
||||
while (*tpp)
|
||||
tpp = &((*tpp)->next);
|
||||
tp->next = NULL;
|
||||
*tpp = tp;
|
||||
}
|
||||
|
||||
/* Tell it to convert once every 5 seconds, clear all cfg
|
||||
* bits.
|
||||
*/
|
||||
bbc_i2c_writeb(tp->client, 0x00, MAX1617_WR_CFG_BYTE);
|
||||
bbc_i2c_writeb(tp->client, 0x02, MAX1617_WR_CVRATE_BYTE);
|
||||
|
||||
/* Program the hard temperature limits into the chip. */
|
||||
bbc_i2c_writeb(tp->client, amb_temp_limits[tp->index].high_pwroff,
|
||||
MAX1617_WR_AMB_HIGHLIM);
|
||||
bbc_i2c_writeb(tp->client, amb_temp_limits[tp->index].low_pwroff,
|
||||
MAX1617_WR_AMB_LOWLIM);
|
||||
bbc_i2c_writeb(tp->client, cpu_temp_limits[tp->index].high_pwroff,
|
||||
MAX1617_WR_CPU_HIGHLIM);
|
||||
bbc_i2c_writeb(tp->client, cpu_temp_limits[tp->index].low_pwroff,
|
||||
MAX1617_WR_CPU_LOWLIM);
|
||||
|
||||
get_current_temps(tp);
|
||||
tp->prev_cpu_temp = tp->avg_cpu_temp = tp->curr_cpu_temp;
|
||||
tp->prev_amb_temp = tp->avg_amb_temp = tp->curr_amb_temp;
|
||||
|
||||
tp->fan_todo[FAN_AMBIENT] = FAN_SAME;
|
||||
tp->fan_todo[FAN_CPU] = FAN_SAME;
|
||||
}
|
||||
|
||||
static void attach_one_fan(struct linux_ebus_child *echild, int fan_idx)
|
||||
{
|
||||
struct bbc_fan_control *fp = kmalloc(sizeof(*fp), GFP_KERNEL);
|
||||
|
||||
if (!fp)
|
||||
return;
|
||||
memset(fp, 0, sizeof(*fp));
|
||||
fp->client = bbc_i2c_attach(echild);
|
||||
if (!fp->client) {
|
||||
kfree(fp);
|
||||
return;
|
||||
}
|
||||
|
||||
fp->index = fan_idx;
|
||||
|
||||
{
|
||||
struct bbc_fan_control **fpp = &all_bbc_fans;
|
||||
while (*fpp)
|
||||
fpp = &((*fpp)->next);
|
||||
fp->next = NULL;
|
||||
*fpp = fp;
|
||||
}
|
||||
|
||||
/* The i2c device controlling the fans is write-only.
|
||||
* So the only way to keep track of the current power
|
||||
* level fed to the fans is via software. Choose half
|
||||
* power for cpu/system and 'on' fo the powersupply fan
|
||||
* and set it now.
|
||||
*/
|
||||
fp->psupply_fan_on = 1;
|
||||
fp->cpu_fan_speed = (FAN_SPEED_MAX - FAN_SPEED_MIN) / 2;
|
||||
fp->cpu_fan_speed += FAN_SPEED_MIN;
|
||||
fp->system_fan_speed = (FAN_SPEED_MAX - FAN_SPEED_MIN) / 2;
|
||||
fp->system_fan_speed += FAN_SPEED_MIN;
|
||||
|
||||
set_fan_speeds(fp);
|
||||
}
|
||||
|
||||
int bbc_envctrl_init(void)
|
||||
{
|
||||
struct linux_ebus_child *echild;
|
||||
int temp_index = 0;
|
||||
int fan_index = 0;
|
||||
int devidx = 0;
|
||||
int err = 0;
|
||||
|
||||
while ((echild = bbc_i2c_getdev(devidx++)) != NULL) {
|
||||
if (!strcmp(echild->prom_name, "temperature"))
|
||||
attach_one_temp(echild, temp_index++);
|
||||
if (!strcmp(echild->prom_name, "fan-control"))
|
||||
attach_one_fan(echild, fan_index++);
|
||||
}
|
||||
if (temp_index != 0 && fan_index != 0)
|
||||
err = kernel_thread(kenvctrld, NULL, CLONE_FS | CLONE_FILES);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void destroy_one_temp(struct bbc_cpu_temperature *tp)
|
||||
{
|
||||
bbc_i2c_detach(tp->client);
|
||||
kfree(tp);
|
||||
}
|
||||
|
||||
static void destroy_one_fan(struct bbc_fan_control *fp)
|
||||
{
|
||||
bbc_i2c_detach(fp->client);
|
||||
kfree(fp);
|
||||
}
|
||||
|
||||
void bbc_envctrl_cleanup(void)
|
||||
{
|
||||
struct bbc_cpu_temperature *tp;
|
||||
struct bbc_fan_control *fp;
|
||||
|
||||
if (kenvctrld_task != NULL) {
|
||||
force_sig(SIGKILL, kenvctrld_task);
|
||||
for (;;) {
|
||||
struct task_struct *p;
|
||||
int found = 0;
|
||||
|
||||
read_lock(&tasklist_lock);
|
||||
for_each_process(p) {
|
||||
if (p == kenvctrld_task) {
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
read_unlock(&tasklist_lock);
|
||||
if (!found)
|
||||
break;
|
||||
msleep(1000);
|
||||
}
|
||||
kenvctrld_task = NULL;
|
||||
}
|
||||
|
||||
tp = all_bbc_temps;
|
||||
while (tp != NULL) {
|
||||
struct bbc_cpu_temperature *next = tp->next;
|
||||
destroy_one_temp(tp);
|
||||
tp = next;
|
||||
}
|
||||
all_bbc_temps = NULL;
|
||||
|
||||
fp = all_bbc_fans;
|
||||
while (fp != NULL) {
|
||||
struct bbc_fan_control *next = fp->next;
|
||||
destroy_one_fan(fp);
|
||||
fp = next;
|
||||
}
|
||||
all_bbc_fans = NULL;
|
||||
}
|
||||
Reference in New Issue
Block a user