From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Sat, 14 Dec 2019 23:02:58 +0100
Subject: rtc: rx8010: remove RTC_VL_CLR handling

Git-commit: 894b04320020ee9752c9fffad0fe72ed2ed81e71
Patch-mainline: v5.6-rc1
References: jsc#SLE-12251

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/20191214220259.621996-17-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
 drivers/rtc/rtc-rx8010.c | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/drivers/rtc/rtc-rx8010.c b/drivers/rtc/rtc-rx8010.c
index 8102469e27c0..9b106a26c64b 100644
--- a/drivers/rtc/rtc-rx8010.c
+++ b/drivers/rtc/rtc-rx8010.c
@@ -389,9 +389,8 @@ static int rx8010_alarm_irq_enable(struct device *dev,
 
 static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
 {
-	struct i2c_client *client = to_i2c_client(dev);
 	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
-	int ret, tmp;
+	int tmp;
 	int flagreg;
 
 	switch (cmd) {
@@ -406,19 +405,6 @@ static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
 
 		return 0;
 
-	case RTC_VL_CLR:
-		flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
-		if (flagreg < 0) {
-			return flagreg;
-		}
-
-		flagreg &= ~RX8010_FLAG_VLF;
-		ret = i2c_smbus_write_byte_data(client, RX8010_FLAG, flagreg);
-		if (ret < 0)
-			return ret;
-
-		return 0;
-
 	default:
 		return -ENOIOCTLCMD;
 	}
-- 
2.26.2