linux-kernel - [PATCH 1/3] rtc: initialize rtc name early

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Date:	Sat, 28 Mar 2015 23:09:34 +0200
From:	Aaro Koskinen <aaro.koskinen@....fi>
To:	Alessandro Zummo <a.zummo@...ertech.it>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	rtc-linux@...glegroups.com
Cc:	linux-kernel@...r.kernel.org, Aaro Koskinen <aaro.koskinen@....fi>
Subject: [PATCH 1/3] rtc: 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@....fi>
---
 drivers/rtc/class.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 472a5ad..014ecbc 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -225,15 +225,15 @@ 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);
-- 
2.2.0

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