From 202fe4c27f427c48ca5660277d743ee8b43fc200 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 16 Apr 2015 12:45:57 -0700 Subject: [PATCH] drivers/rtc/rtc-s3c.c: fix failed first read of RTC time Initialize the device time (if it is wrong) before registering RTC device to fix following error message during rtc-s3c probe: [ 2.215414] rtc (null): read_time: fail to read [ 2.216322] s3c-rtc 10070000.rtc: rtc core: registered s3c as rtc1 Signed-off-by: Krzysztof Kozlowski Cc: Alessandro Zummo Cc: Alexandre Belloni Cc: Marek Szyprowski Reviewed-by: Chanwoo Choi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-s3c.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index fb0c569..a313b9b 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -496,6 +496,22 @@ static int s3c_rtc_probe(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 1); + /* Check RTC Time */ + s3c_rtc_gettime(&pdev->dev, &rtc_tm); + + if (rtc_valid_tm(&rtc_tm)) { + rtc_tm.tm_year = 100; + rtc_tm.tm_mon = 0; + rtc_tm.tm_mday = 1; + rtc_tm.tm_hour = 0; + rtc_tm.tm_min = 0; + rtc_tm.tm_sec = 0; + + s3c_rtc_settime(&pdev->dev, &rtc_tm); + + dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n"); + } + /* register RTC and exit */ info->rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops, THIS_MODULE); @@ -519,22 +535,6 @@ static int s3c_rtc_probe(struct platform_device *pdev) goto err_nortc; } - /* Check RTC Time */ - s3c_rtc_gettime(&pdev->dev, &rtc_tm); - - if (rtc_valid_tm(&rtc_tm)) { - rtc_tm.tm_year = 100; - rtc_tm.tm_mon = 0; - rtc_tm.tm_mday = 1; - rtc_tm.tm_hour = 0; - rtc_tm.tm_min = 0; - rtc_tm.tm_sec = 0; - - s3c_rtc_settime(&pdev->dev, &rtc_tm); - - dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n"); - } - if (info->data->select_tick_clk) info->data->select_tick_clk(info); -- 2.7.4