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rtc: ls1x: remove mktime usage 

The loongson1 platform is 32-bit, so storing a time value in 32 bits
suffers from limited range. In this case it is likely to be correct
until 2106, but it's better to avoid the limitation and just use
the time64_t based mktime64() and rtc_time64_to_tm() interfaces.

The hardware uses a 32-bit year number, and time64_t can cover that
entire range.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Arnd Bergmann 2018-04-20 18:14:25 +02:00 committed by Alexandre Belloni
parent 0d1c655380
commit 337fa19cc3
1 changed files with 4 additions and 3 deletions
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7
drivers/rtc/rtc-ls1x.c
View File

@ -87,16 +87,17 @@
static int ls1x_rtc_read_time(struct device *dev, struct rtc_time *rtm)
{
unsigned long v, t;
unsigned long v;
time64_t t;
v = readl(SYS_TOYREAD0);
t = readl(SYS_TOYREAD1);
memset(rtm, 0, sizeof(struct rtc_time));
t = mktime((t & LS1X_YEAR_MASK), ls1x_get_month(v),
t = mktime64((t & LS1X_YEAR_MASK), ls1x_get_month(v),
ls1x_get_day(v), ls1x_get_hour(v),
ls1x_get_min(v), ls1x_get_sec(v));
rtc_time_to_tm(t, rtm);
rtc_time64_to_tm(t, rtm);
return 0;
}