rtc: sun4v: set range

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.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

1 files 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 = {