[PATCH 1/2] rtc: class: add debug message when registration fails

[Alexandre Belloni]

Add a message when __rtc_register_device fails because rtc->ops is NULL.
This may only happen when developing a new driver so use dev_dbg to avoid
compiling it in by default.

Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
---
 drivers/rtc/class.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 0f492b0940b3..9458e6d6686a 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -346,8 +346,10 @@ int __rtc_register_device(struct module *owner, struct rtc_device *rtc)
 	struct rtc_wkalrm alrm;
 	int err;
 
-	if (!rtc->ops)
+	if (!rtc->ops) {
+		dev_dbg(&rtc->dev, "no ops set\n");
 		return -EINVAL;
+	}
 
 	rtc->owner = owner;
 	rtc_device_get_offset(rtc);
-- 
2.21.0