linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / drivers / char / snsc_event.c

diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
index d12d4f6..baaa365 100644 (file)
--- a/drivers/char/snsc_event.c
+++ b/drivers/char/snsc_event.c
@@ -5,7 +5,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
  */
 
 /*
@@ -187,8 +187,7 @@ scdrv_event_severity(int code)
 static void
 scdrv_dispatch_event(char *event, int len)
 {
-       static int snsc_shutting_down = 0;
-       int code, esp_code, src, class;
+       int code, esp_code, src;
        char desc[CHUNKSIZE];
        char *severity;
 
@@ -200,27 +199,25 @@ scdrv_dispatch_event(char *event, int len)
        /* how urgent is the message? */
        severity = scdrv_event_severity(code);
 
-       class = (code & EV_CLASS_MASK);
-
-       if (class == EV_CLASS_PWRD_NOTIFY || code == ENV_PWRDN_PEND) {
+       if ((code & EV_CLASS_MASK) == EV_CLASS_PWRD_NOTIFY) {
                struct task_struct *p;
 
-               if (snsc_shutting_down)
-                       return;
-
-               snsc_shutting_down = 1;
-
-               /* give a message for each type of event */
-               if (class == EV_CLASS_PWRD_NOTIFY)
-                       printk(KERN_NOTICE "Power off indication received."
-                              " Sending SIGPWR to init...\n");
-               else if (code == ENV_PWRDN_PEND)
-                       printk(KERN_CRIT "WARNING: Shutting down the system"
-                              " due to a critical environmental condition."
-                              " Sending SIGPWR to init...\n");
-
                /* give a SIGPWR signal to init proc */
-               kill_proc(1, SIGPWR, 0);
+
+               /* first find init's task */
+               read_lock(&tasklist_lock);
+               for_each_process(p) {
+                       if (p->pid == 1)
+                               break;
+               }
+               if (p) { /* we found init's task */
+                       printk(KERN_EMERG "Power off indication received. Initiating power fail sequence...\n");
+                       force_sig(SIGPWR, p);
+               } else { /* failed to find init's task - just give message(s) */
+                       printk(KERN_WARNING "Failed to find init proc to handle power off!\n");
+                       printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
+               }
+               read_unlock(&tasklist_lock);
        } else {
                /* print to system log */
                printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
@@ -274,7 +271,7 @@ scdrv_event_init(struct sysctl_data_s *scd)
 {
        int rv;
 
-       event_sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
+       event_sd = kmalloc(sizeof (struct subch_data_s), GFP_KERNEL);
        if (event_sd == NULL) {
                printk(KERN_WARNING "%s: couldn't allocate subchannel info"
                       " for event monitoring\n", __FUNCTION__);
@@ -282,6 +279,7 @@ scdrv_event_init(struct sysctl_data_s *scd)
        }
 
        /* initialize subch_data_s fields */
+       memset(event_sd, 0, sizeof (struct subch_data_s));
        event_sd->sd_nasid = scd->scd_nasid;
        spin_lock_init(&event_sd->sd_rlock);
 
@@ -297,7 +295,7 @@ scdrv_event_init(struct sysctl_data_s *scd)
 
        /* hook event subchannel up to the system controller interrupt */
        rv = request_irq(SGI_UART_VECTOR, scdrv_event_interrupt,
-                        IRQF_SHARED | IRQF_DISABLED,
+                        SA_SHIRQ | SA_INTERRUPT,
                         "system controller events", event_sd);
        if (rv) {
                printk(KERN_WARNING "%s: irq request failed (%d)\n",
@@ -307,3 +305,5 @@ scdrv_event_init(struct sysctl_data_s *scd)
                return;
        }
 }
+
+