The Sun4v Hypervisor Core API Specification states:
Time is described by a single unsigned 64-bit word equivalent to a time_t
for the POSIX time(2) system call. The word contains the time since the
Epoch (00:00:00 UTC, January 1, 1970), measured in seconds.

Signed-off-by: Alexandre Belloni <alexandre.bell...@bootlin.com>
---
 drivers/rtc/rtc-sun4v.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/rtc/rtc-sun4v.c b/drivers/rtc/rtc-sun4v.c
index 378081fffa91..82fb51f79c6e 100644
--- a/drivers/rtc/rtc-sun4v.c
+++ b/drivers/rtc/rtc-sun4v.c
@@ -78,13 +78,15 @@ static int __init sun4v_rtc_probe(struct platform_device 
*pdev)
 {
        struct rtc_device *rtc;
 
-       rtc = devm_rtc_device_register(&pdev->dev, "sun4v",
-                               &sun4v_rtc_ops, THIS_MODULE);
+       rtc = devm_rtc_allocate_device(&pdev->dev);
        if (IS_ERR(rtc))
                return PTR_ERR(rtc);
 
+       rtc->ops = &sun4v_rtc_ops;
+       rtc->range_max = U64_MAX;
        platform_set_drvdata(pdev, rtc);
-       return 0;
+
+       return rtc_register_device(rtc);
 }
 
 static struct platform_driver sun4v_rtc_driver = {
-- 
2.20.1

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