rtc: rv8803: avoid clearing RV8803_FLAG_V2F in RTC_VL_CLR

Stop clearing RV8803_FLAG_V2F in RTC_VL_CLR because it is a disservice to
userspace as it removes the important information that the RTC data is
invalid. This may lead userspace to set an invalid system time later on.

Link: https://lore.kernel.org/r/20191214220259.621996-15-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c
index 4960f0a2b249a25e04d3eb69289f96b10b22e154..ed92116bdfa078fa45861a97c0bce6c1e1ffe7bb 100644 (file)
--- a/drivers/rtc/rtc-rv8803.c
+++ b/drivers/rtc/rtc-rv8803.c
@@ -440,7 +440,7 @@ static int rv8803_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
                        return flags;
                }
 
-               flags &= ~(RV8803_FLAG_V1F | RV8803_FLAG_V2F);
+               flags &= ~RV8803_FLAG_V1F;
                ret = rv8803_write_reg(client, RV8803_FLAG, flags);
                mutex_unlock(&rv8803->flags_lock);
                if (ret)