[PATCH 2/2] rtc-dev: return -ENOTTY in ioctl if irq_set_freq is not implemented by driver

[Hans-Christian Egtvedt]

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@xxxxxxxxx>
---
 drivers/rtc/rtc-dev.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 137330b..7f0e749 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -306,6 +306,8 @@ 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:
-- 
1.4.4.2

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