1 files changed, 25 insertions, 12 deletions

diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
index baaa365285fa..e234d50e142a 100644
--- 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 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
  */
 
 /*
@@ -187,7 +187,8 @@ scdrv_event_severity(int code)
 static void
 scdrv_dispatch_event(char *event, int len)
 {
-        int code, esp_code, src;
+        static int snsc_shutting_down = 0;
+        int code, esp_code, src, class;
         char desc[CHUNKSIZE];
         char *severity;
 
@@ -199,9 +200,25 @@ scdrv_dispatch_event(char *event, int len)
         /* how urgent is the message? */
         severity = scdrv_event_severity(code);
 
-        if ((code & EV_CLASS_MASK) == EV_CLASS_PWRD_NOTIFY) {
+        class = (code & EV_CLASS_MASK);
+
+        if (class == EV_CLASS_PWRD_NOTIFY || code == ENV_PWRDN_PEND) {
                 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 */
 
                 /* first find init's task */
@@ -210,12 +227,11 @@ scdrv_dispatch_event(char *event, int len)
                         if (p->pid == 1)
                                 break;
                 }
-                if (p) { /* we found init's task */
-                        printk(KERN_EMERG "Power off indication received. Initiating power fail sequence...\n");
+                if (p) {
                         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);
+                } else {
+                        printk(KERN_ERR "Failed to signal init!\n");
+                        snsc_shutting_down = 0; /* so can try again (?) */
                 }
                 read_unlock(&tasklist_lock);
         } else {
@@ -271,7 +287,7 @@ scdrv_event_init(struct sysctl_data_s *scd)
 {
         int rv;
 
-        event_sd = kmalloc(sizeof (struct subch_data_s), GFP_KERNEL);
+        event_sd = kzalloc(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__);
@@ -279,7 +295,6 @@ 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);
 
@@ -305,5 +320,3 @@ scdrv_event_init(struct sysctl_data_s *scd)
                 return;
         }
 }
-
-