[PATCH] power: qos: no need to check return value of debugfs_create functions

[Greg Kroah-Hartman]

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.

Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: linux-pm@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 kernel/power/qos.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index b7a82502857a..9d22131afc1e 100644
--- 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);
-- 
2.20.1