PM: QoS: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index b7a82502857a3f912588828d324da8c6489279b8..9d22131afc1e95c06a1a9d2d69f92875d232ba97 100644 (file)
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -582,10 +582,8 @@ static int register_pm_qos_misc(struct pm_qos_object *qos, struct dentry *d)
        qos->pm_qos_power_miscdev.name = qos->name;
        qos->pm_qos_power_miscdev.fops = &pm_qos_power_fops;
 
-       if (d) {
-               (void)debugfs_create_file(qos->name, S_IRUGO, d,
-                                         (void *)qos, &pm_qos_debug_fops);
-       }
+       debugfs_create_file(qos->name, S_IRUGO, d, (void *)qos,
+                           &pm_qos_debug_fops);
 
        return misc_register(&qos->pm_qos_power_miscdev);
 }
@@ -685,8 +683,6 @@ static int __init pm_qos_power_init(void)
        BUILD_BUG_ON(ARRAY_SIZE(pm_qos_array) != PM_QOS_NUM_CLASSES);
 
        d = debugfs_create_dir("pm_qos", NULL);
-       if (IS_ERR_OR_NULL(d))
-               d = NULL;
 
        for (i = PM_QOS_CPU_DMA_LATENCY; i < PM_QOS_NUM_CLASSES; i++) {
                ret = register_pm_qos_misc(pm_qos_array[i], d);