While PCAP_RTC_DAY_MASK is set to 0x3ffff, it is very unlikely to be correct as this ends in june 1992, before the product even existed. It is more likely to be a 14-bit day counter. The next product in the family (the mc13xxx) has a 15-bit day counter. The same issue is seen with PCAP_RTC_TOD_MASK which only has 65535 seconds and falls short of the necessary 86400 seconds. Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> --- drivers/rtc/rtc-pcap.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/rtc/rtc-pcap.c b/drivers/rtc/rtc-pcap.c index f176cb9d0dbc..976240853260 100644 --- a/drivers/rtc/rtc-pcap.c +++ b/drivers/rtc/rtc-pcap.c @@ -149,11 +149,13 @@ static int __init pcap_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pcap_rtc); - pcap_rtc->rtc = devm_rtc_device_register(&pdev->dev, "pcap", - &pcap_rtc_ops, THIS_MODULE); + pcap_rtc->rtc = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(pcap_rtc->rtc)) return PTR_ERR(pcap_rtc->rtc); + pcap_rtc->rtc->ops = &pcap_rtc_ops; + pcap_rtc->rtc->range_max = (1 << 14) * 86400ULL - 1; + timer_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ); alarm_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA); @@ -167,7 +169,7 @@ static int __init pcap_rtc_probe(struct platform_device *pdev) if (err) return err; - return 0; + return rtc_register_device(pcap_rtc->rtc); } static int __exit pcap_rtc_remove(struct platform_device *pdev) -- 2.20.1
