drivers/rtc/class.c: initialize rtc name early

In some error cases RTC name is used before it is initialized:

	rtc-rs5c372 0-0032: clock needs to be set
	rtc-rs5c372 0-0032: rs5c372b found, 24hr, driver version 0.6
	rtc (null): read_time: fail to read
	rtc-rs5c372 0-0032: rtc core: registered rtc-rs5c372 as rtc0

Fix by initializing the name early.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index c29ba7e14304..ea2a315df6b7 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -221,15 +221,15 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev,
         rtc->pie_timer.function = rtc_pie_update_irq;
         rtc->pie_enabled = 0;
 
+        strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
+        dev_set_name(&rtc->dev, "rtc%d", id);
+
         /* Check to see if there is an ALARM already set in hw */
         err = __rtc_read_alarm(rtc, &alrm);
 
         if (!err && !rtc_valid_tm(&alrm.time))
                 rtc_initialize_alarm(rtc, &alrm);
 
-        strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
-        dev_set_name(&rtc->dev, "rtc%d", id);
-
         rtc_dev_prepare(rtc);
 
         err = device_register(&rtc->dev);