1 files changed, 12 insertions, 5 deletions

diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c
index 2e4832ab210..638883e23e3 100644
--- a/arch/powerpc/kernel/rtasd.c
+++ b/arch/powerpc/kernel/rtasd.c
@@ -20,6 +20,7 @@
 #include <linux/spinlock.h>
 #include <linux/cpu.h>
 #include <linux/workqueue.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -410,9 +411,9 @@ static void rtas_event_scan(struct work_struct *w)
 
         get_online_cpus();
 
-        cpu = next_cpu(smp_processor_id(), cpu_online_map);
-        if (cpu == NR_CPUS) {
-                cpu = first_cpu(cpu_online_map);
+        cpu = cpumask_next(smp_processor_id(), cpu_online_mask);
+        if (cpu >= nr_cpu_ids) {
+                cpu = cpumask_first(cpu_online_mask);
 
                 if (first_pass) {
                         first_pass = 0;
@@ -465,8 +466,8 @@ static void start_event_scan(void)
         /* Retreive errors from nvram if any */
         retreive_nvram_error_log();
 
-        schedule_delayed_work_on(first_cpu(cpu_online_map), &event_scan_work,
-                                 event_scan_delay);
+        schedule_delayed_work_on(cpumask_first(cpu_online_mask),
+                                 &event_scan_work, event_scan_delay);
 }
 
 static int __init rtas_init(void)
@@ -489,6 +490,12 @@ static int __init rtas_init(void)
                 return -ENODEV;
         }
 
+        if (!rtas_event_scan_rate) {
+                /* Broken firmware: take a rate of zero to mean don't scan */
+                printk(KERN_DEBUG "rtasd: scan rate is 0, not scanning\n");
+                return 0;
+        }
+
         /* Make room for the sequence number */
         rtas_error_log_max = rtas_get_error_log_max();
         rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int);