fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / parisc / power.c

diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c
index d097e7e..97e9dc0 100644 (file)
--- a/drivers/parisc/power.c
+++ b/drivers/parisc/power.c
@@ -1,8 +1,8 @@
 /*
- * linux/arch/parisc/kernel/power.c
+ * linux/drivers/parisc/power.c
  * HP PARISC soft power switch support driver
  *
- * Copyright (c) 2001-2002 Helge Deller <deller@gmx.de>
+ * Copyright (c) 2001-2005 Helge Deller <deller@gmx.de>
  * All rights reserved.
  *
  *
@@ -35,7 +35,6 @@
  *  runtime through the "/proc/sys/kernel/power" procfs entry.
  */ 
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -47,7 +46,6 @@
 #include <linux/workqueue.h>
 
 #include <asm/pdc.h>
-#include <asm/irq.h>
 #include <asm/io.h>
 #include <asm/led.h>
 #include <asm/uaccess.h>
@@ -86,8 +84,7 @@
 
 static void deferred_poweroff(void *dummy)
 {
-       extern int cad_pid;     /* from kernel/sys.c */
-       if (kill_proc(cad_pid, SIGINT, 1)) {
+       if (kill_cad_pid(SIGINT, 1)) {
                /* just in case killing init process failed */
                machine_power_off();
        }
@@ -103,7 +100,7 @@ static DECLARE_WORK(poweroff_work, deferred_poweroff, NULL);
 
 static void poweroff(void)
 {
-       static int powering_off;
+       static int powering_off __read_mostly;
 
        if (powering_off)
                return;
@@ -114,7 +111,7 @@ static void poweroff(void)
 
 
 /* local time-counter for shutdown */
-static int shutdown_timer;
+static int shutdown_timer __read_mostly;
 
 /* check, give feedback and start shutdown after one second */
 static void process_shutdown(void)
@@ -126,11 +123,11 @@ static void process_shutdown(void)
        
        /* wait until the button was pressed for 1 second */
        if (shutdown_timer == HZ) {
+#if defined (DEBUG) || defined(CONFIG_CHASSIS_LCD_LED)
                static char msg[] = "Shutting down...";
+#endif
                DPRINTK(KERN_INFO "%s\n", msg);
-#ifdef CONFIG_CHASSIS_LCD_LED
                lcd_print(msg);
-#endif
                poweroff();
        }
 }
@@ -140,7 +137,7 @@ static void process_shutdown(void)
 DECLARE_TASKLET_DISABLED(power_tasklet, NULL, 0);
 
 /* soft power switch enabled/disabled */
-int pwrsw_enabled = 1;
+int pwrsw_enabled __read_mostly = 1;
 
 /*
  * On gecko style machines (e.g. 712/xx and 715/xx) 
@@ -150,7 +147,7 @@ int pwrsw_enabled = 1;
  */
 static void gecko_tasklet_func(unsigned long unused)
 {
-       if (!pwrsw_enabled)
+       if (unlikely(!pwrsw_enabled))
                return;
 
        if (__getDIAG(25) & 0x80000000) {
@@ -174,7 +171,7 @@ static void polling_tasklet_func(unsigned long soft_power_reg)
 {
         unsigned long current_status;
        
-       if (!pwrsw_enabled)
+       if (unlikely(!pwrsw_enabled))
                return;
 
        current_status = gsc_readl(soft_power_reg);
@@ -191,7 +188,7 @@ static void polling_tasklet_func(unsigned long soft_power_reg)
  * powerfail interruption handler (irq IRQ_FROM_REGION(CPU_IRQ_REGION)+2) 
  */
 #if 0
-static void powerfail_interrupt(int code, void *x, struct pt_regs *regs)
+static void powerfail_interrupt(int code, void *x)
 {
        printk(KERN_CRIT "POWERFAIL INTERRUPTION !\n");
        poweroff();
@@ -252,7 +249,8 @@ static int __init power_init(void)
        }
 
        /* Register a call for panic conditions. */
-       notifier_chain_register(&panic_notifier_list, &parisc_panic_block);
+       atomic_notifier_chain_register(&panic_notifier_list,
+                       &parisc_panic_block);
 
        tasklet_enable(&power_tasklet);
 
@@ -265,7 +263,8 @@ static void __exit power_exit(void)
                return;
 
        tasklet_disable(&power_tasklet);
-       notifier_chain_unregister(&panic_notifier_list, &parisc_panic_block);
+       atomic_notifier_chain_unregister(&panic_notifier_list,
+                       &parisc_panic_block);
        power_tasklet.func = NULL;
        pdc_soft_power_button(0);
 }