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authorAlexandre Belloni <alexandre.belloni@bootlin.com>2019-12-14 23:02:48 +0100
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2019-12-18 10:37:27 +0100
commitd268f4bd42f51813f7335ce36a430de1b27a0bcb (patch)
tree7ff385062f8ed6a450feca103631486809da7aa4 /drivers/rtc/rtc-pcf8563.c
parent244cf8f0ed2778e1897b64b9043367b7263f5590 (diff)
rtc: pcf8563: remove RTC_VL_CLR handling
Remove RTC_VL_CLR handling 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/20191214220259.621996-7-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-pcf8563.c')
-rw-r--r--drivers/rtc/rtc-pcf8563.c15
1 files changed, 0 insertions, 15 deletions
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 3c322f3079b0..c701eef82349 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -291,21 +291,6 @@ static int pcf8563_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long
sizeof(int)))
return -EFAULT;
return 0;
- case RTC_VL_CLR:
- /*
- * Clear the VL bit in the seconds register in case
- * the time has not been set already (which would
- * have cleared it). This does not really matter
- * because of the cached voltage_low value but do it
- * anyway for consistency.
- */
- if (pcf8563_rtc_read_time(dev, &tm))
- pcf8563_rtc_set_time(dev, &tm);
-
- /* Clear the cached value. */
- pcf8563->voltage_low = 0;
-
- return 0;
default:
return -ENOIOCTLCMD;
}