1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index f4e5f0040ff7..304535942de2 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -341,6 +341,8 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
         case RTC_IRQP_READ:
                 if (ops->irq_set_freq)
                         err = put_user(rtc->irq_freq, (unsigned long __user *)uarg);
+                else
+                        err = -ENOTTY;
                 break;
 
         case RTC_IRQP_SET: