1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 304535942de2..005fff3a3508 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -348,6 +348,8 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
         case RTC_IRQP_SET:
                 if (ops->irq_set_freq)
                         err = rtc_irq_set_freq(rtc, rtc->irq_task, arg);
+                else
+                        err = -ENOTTY;
                 break;
 
 #if 0