X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fchar%2Fsnsc_event.c;h=2f56e8c54897d5c55ca1caec974c95e43c787fd6;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=baaa365285fa973776beddcb0ae5c09389ffbe65;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
index baaa36528..2f56e8c54 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.
  */
 
 /*
@@ -36,7 +36,7 @@ DECLARE_TASKLET(sn_sysctl_event, scdrv_event, 0);
  * destination.
  */
 static irqreturn_t
-scdrv_event_interrupt(int irq, void *subch_data, struct pt_regs *regs)
+scdrv_event_interrupt(int irq, void *subch_data)
 {
 	struct subch_data_s *sd = subch_data;
 	unsigned long flags;
@@ -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;
 
@@ -199,25 +200,27 @@ 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;
 
-		/* give a SIGPWR signal to init proc */
+		if (snsc_shutting_down)
+			return;
 
-		/* 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|$(0x%x)%s\n", severity, esp_code, desc);
-		}
-		read_unlock(&tasklist_lock);
+		snsc_shutting_down = 1;
+
+		/* give a message for each type of event */
+		if (class == EV_CLASS_PWRD_NOTIFY)
+			printk(KERN_NOTICE "Power off indication received."
+			       " Sending SIGPWR to init...\n");
+		else if (code == ENV_PWRDN_PEND)
+			printk(KERN_CRIT "WARNING: Shutting down the system"
+			       " due to a critical environmental condition."
+			       " Sending SIGPWR to init...\n");
+
+		/* give a SIGPWR signal to init proc */
+		kill_cad_pid(SIGPWR, 0);
 	} else {
 		/* print to system log */
 		printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
@@ -271,7 +274,7 @@ 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 +282,6 @@ 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);
 
@@ -295,7 +297,7 @@ 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,
-			 SA_SHIRQ | SA_INTERRUPT,
+			 IRQF_SHARED | IRQF_DISABLED,
 			 "system controller events", event_sd);
 	if (rv) {
 		printk(KERN_WARNING "%s: irq request failed (%d)\n",
@@ -305,5 +307,3 @@ scdrv_event_init(struct sysctl_data_s *scd)
 		return;
 	}
 }
-
-