[CPUFREQ] handle sysfs errors
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 291cfe9..cbde076 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -473,6 +473,7 @@
unsigned int cpu = policy->cpu;
struct cpu_dbs_info_s *this_dbs_info;
unsigned int j;
+ int rc;
this_dbs_info = &per_cpu(cpu_dbs_info, cpu);
@@ -501,6 +502,16 @@
return -ENOSPC;
}
}
+
+ rc = sysfs_create_group(&policy->kobj, &dbs_attr_group);
+ if (rc) {
+ if (dbs_enable == 1)
+ destroy_workqueue(kondemand_wq);
+ dbs_enable--;
+ mutex_unlock(&dbs_mutex);
+ return rc;
+ }
+
for_each_cpu_mask(j, policy->cpus) {
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
@@ -510,7 +521,6 @@
j_dbs_info->prev_cpu_wall = get_jiffies_64();
}
this_dbs_info->enable = 1;
- sysfs_create_group(&policy->kobj, &dbs_attr_group);
/*
* Start the timerschedule work, when this governor
* is used for first time