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[CPUFREQ] check sysfs_create_link return value

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Trivial patch to check sysfs_create_link return values.
Fail gracefully if needed.

Signed-off-by: Ahmed Darwish <darwish.07@gmail.com>
Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Ahmed S. Darwish 2007-01-05 05:44:54 +02:00 committed by Dave Jones
parent 5263bf65d6
commit 0142f9dce8
1 changed files with 13 additions and 4 deletions
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17
drivers/cpufreq/cpufreq.c
View file

@ -722,8 +722,13 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
dprintk("CPU already managed, adding link\n");
sysfs_create_link(&sys_dev->kobj,
&managed_policy->kobj, "cpufreq");
ret = sysfs_create_link(&sys_dev->kobj,
&managed_policy->kobj,
"cpufreq");
if (ret) {
mutex_unlock(&policy->lock);
goto err_out_driver_exit;
}
cpufreq_debug_enable_ratelimit();
mutex_unlock(&policy->lock);
@ -770,8 +775,12 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
dprintk("CPU %u already managed, adding link\n", j);
cpufreq_cpu_get(cpu);
cpu_sys_dev = get_cpu_sysdev(j);
sysfs_create_link(&cpu_sys_dev->kobj, &policy->kobj,
"cpufreq");
ret = sysfs_create_link(&cpu_sys_dev->kobj, &policy->kobj,
"cpufreq");
if (ret) {
mutex_unlock(&policy->lock);
goto err_out_unregister;
}
}
policy->governor = NULL; /* to assure that the starting sequence is