diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index 053ce7c000f6..937752d5eb2e 100644
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c
@@ -1012,7 +1012,16 @@ static u32 gpio_v2_line_config_debounce_period(struct gpio_v2_line_config *lc,
 
 static inline char *make_irq_label(const char *orig)
 {
-	return kstrdup_and_replace(orig, '/', ':', GFP_KERNEL);
+	char *new;
+
+	if (!orig)
+		return NULL;
+
+	new = kstrdup_and_replace(orig, '/', ':', GFP_KERNEL);
+	if (!new)
+		return ERR_PTR(-ENOMEM);
+
+	return new;
 }
 
 static inline void free_irq_label(const char *label)
@@ -1086,8 +1095,8 @@ static int edge_detector_setup(struct line *line,
 	irqflags |= IRQF_ONESHOT;
 
 	label = make_irq_label(line->req->label);
-	if (!label)
-		return -ENOMEM;
+	if (IS_ERR(label))
+		return PTR_ERR(label);
 
 	/* Request a thread to read the events */
 	ret = request_threaded_irq(irq, edge_irq_handler, edge_irq_thread,
@@ -2194,8 +2203,8 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip)
 		goto out_free_le;
 
 	label = make_irq_label(le->label);
-	if (!label) {
-		ret = -ENOMEM;
+	if (IS_ERR(label)) {
+		ret = PTR_ERR(label);
 		goto out_free_le;
 	}