x86/doc: mini-howto for using earlyprintk=dbgp

[cascardo/linux.git] / arch / x86 / mach-voyager / voyager_thread.c

diff --git a/arch/x86/mach-voyager/voyager_thread.c b/arch/x86/mach-voyager/voyager_thread.c
index 50f9366..15464a2 100644 (file)
--- a/arch/x86/mach-voyager/voyager_thread.c
+++ b/arch/x86/mach-voyager/voyager_thread.c
@@ -4,8 +4,6 @@
  *
  * Author: J.E.J.Bottomley@HansenPartnership.com
  *
- * linux/arch/i386/kernel/voyager_thread.c
- *
  * This module provides the machine status monitor thread for the
  * voyager architecture.  This allows us to monitor the machine
  * environment (temp, voltage, fan function) and the front panel and
@@ -30,12 +28,10 @@
 #include <asm/mtrr.h>
 #include <asm/msr.h>
 
-
 struct task_struct *voyager_thread;
 static __u8 set_timeout;
 
-static int
-execute(const char *string)
+static int execute(const char *string)
 {
        int ret;
 
@@ -52,48 +48,48 @@ execute(const char *string)
                NULL,
        };
 
-       if ((ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC)) != 0) {
-               printk(KERN_ERR "Voyager failed to run \"%s\": %i\n",
-                      string, ret);
+       if ((ret =
+            call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC)) != 0) {
+               printk(KERN_ERR "Voyager failed to run \"%s\": %i\n", string,
+                      ret);
        }
        return ret;
 }
 
-static void
-check_from_kernel(void)
+static void check_from_kernel(void)
 {
-       if(voyager_status.switch_off) {
-               
+       if (voyager_status.switch_off) {
+
                /* FIXME: This should be configurable via proc */
                execute("umask 600; echo 0 > /etc/initrunlvl; kill -HUP 1");
-       } else if(voyager_status.power_fail) {
+       } else if (voyager_status.power_fail) {
                VDEBUG(("Voyager daemon detected AC power failure\n"));
-               
+
                /* FIXME: This should be configureable via proc */
                execute("umask 600; echo F > /etc/powerstatus; kill -PWR 1");
                set_timeout = 1;
        }
 }
 
-static void
-check_continuing_condition(void)
+static void check_continuing_condition(void)
 {
-       if(voyager_status.power_fail) {
+       if (voyager_status.power_fail) {
                __u8 data;
-               voyager_cat_psi(VOYAGER_PSI_SUBREAD, 
+               voyager_cat_psi(VOYAGER_PSI_SUBREAD,
                                VOYAGER_PSI_AC_FAIL_REG, &data);
-               if((data & 0x1f) == 0) {
+               if ((data & 0x1f) == 0) {
                        /* all power restored */
-                       printk(KERN_NOTICE "VOYAGER AC power restored, cancelling shutdown\n");
+                       printk(KERN_NOTICE
+                              "VOYAGER AC power restored, cancelling shutdown\n");
                        /* FIXME: should be user configureable */
-                       execute("umask 600; echo O > /etc/powerstatus; kill -PWR 1");
+                       execute
+                           ("umask 600; echo O > /etc/powerstatus; kill -PWR 1");
                        set_timeout = 0;
                }
        }
 }
 
-static int
-thread(void *unused)
+static int thread(void *unused)
 {
        printk(KERN_NOTICE "Voyager starting monitor thread\n");
 
@@ -102,7 +98,7 @@ thread(void *unused)
                schedule_timeout(set_timeout ? HZ : MAX_SCHEDULE_TIMEOUT);
 
                VDEBUG(("Voyager Daemon awoken\n"));
-               if(voyager_status.request_from_kernel == 0) {
+               if (voyager_status.request_from_kernel == 0) {
                        /* probably awoken from timeout */
                        check_continuing_condition();
                } else {
@@ -112,20 +108,18 @@ thread(void *unused)
        }
 }
 
-static int __init
-voyager_thread_start(void)
+static int __init voyager_thread_start(void)
 {
        voyager_thread = kthread_run(thread, NULL, "kvoyagerd");
        if (IS_ERR(voyager_thread)) {
-               printk(KERN_ERR "Voyager: Failed to create system monitor thread.\n");
+               printk(KERN_ERR
+                      "Voyager: Failed to create system monitor thread.\n");
                return PTR_ERR(voyager_thread);
        }
        return 0;
 }
 
-
-static void __exit
-voyager_thread_stop(void)
+static void __exit voyager_thread_stop(void)
 {
        kthread_stop(voyager_thread);
 }