===== ras.c 1.17 vs edited =====
--- 1.17/arch/ppc64/kernel/ras.c	Tue Mar 16 18:46:45 2004
+++ edited/ras.c	Tue Apr  6 15:59:18 2004
@@ -109,6 +109,9 @@
 }
 __initcall(init_ras_IRQ);

+static struct rtas_error_log log_buf;
+static spin_lock log_lock = SPIN_LOCK_UNLOCKED;
+
 /*
  * Handle power subsystem events (EPOW).
  *
@@ -123,11 +126,17 @@
 	unsigned int size = sizeof(log_entry);
 	long status = 0xdeadbeef;

+	spin_lock(&log_lock);
+
 	status = rtas_call(rtas_token("check-exception"), 6, 1, NULL,
 			   0x500, irq,
 			   RTAS_EPOW_WARNING | RTAS_POWERMGM_EVENTS,
 			   1,  /* Time Critical */
-			   __pa(&log_entry), size);
+			   __pa(&log_buf), size);
+
+	log_entry = log_buf;
+
+	spin_unlock(&log_lock);

 	udbg_printf("EPOW <0x%lx 0x%lx>\n",
 		    *((unsigned long *)&log_entry), status);
@@ -136,7 +145,7 @@

 	/* format and print the extended information */
 	log_error((char *)&log_entry, ERR_TYPE_RTAS_LOG, 0);
-
+
 	return IRQ_HANDLED;
 }

@@ -156,11 +165,17 @@
 	long status = 0xdeadbeef;
 	int fatal;

+	spin_lock(&log_lock);
+
 	status = rtas_call(rtas_token("check-exception"), 6, 1, NULL,
 			   0x500, irq,
 			   RTAS_INTERNAL_ERROR,
 			   1, /* Time Critical */
-			   __pa(&log_entry), size);
+			   __pa(&log_buf), size);
+
+	log_entry = log_buf;
+
+	spin_unlock(&log_lock);

 	if ((status == 0) && (log_entry.severity >= SEVERITY_ERROR_SYNC))
 		fatal = 1;