p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

rtc: rx8581: error out when time invalid 

Return an error when the date is unreliable because the battery is low.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2018-05-17 22:33:30 +02:00
parent ed87c6d86d
commit 6e6111f6c0
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/rtc/rtc-rx8581.c
View File

@ -109,6 +109,12 @@ static int rx8581_rtc_read_time(struct device *dev, struct rtc_time *tm)
return -EIO;
}
if (data & RX8581_FLAG_VLF) {
dev_warn(dev,
"low voltage detected, date/time is not reliable.\n");
return -EINVAL;
}
do {
/* If update flag set, clear it */
if (data & RX8581_FLAG_UF) {
@ -136,10 +142,6 @@ static int rx8581_rtc_read_time(struct device *dev, struct rtc_time *tm)
}
} while (data & RX8581_FLAG_UF);
if (data & RX8581_FLAG_VLF)
dev_info(dev,
"low voltage detected, date/time is not reliable.\n");
dev_dbg(dev, "%s: raw data is sec=%02x, min=%02x, hr=%02x, "
"wday=%02x, mday=%02x, mon=%02x, year=%02x\n",
__func__,