From faade0986e840884438a6e8a21b782c34eb1109c Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Sat, 17 Oct 2020 20:13:06 +0200 Subject: parisc: Improve error return codes when setting rtc time The HP 730 machine returned strange errors when I tried setting the rtc time. Add some debug code to improve the possibility to trace errors and document that hppa probably has as Y2k38 problem. Signed-off-by: Helge Deller --- arch/parisc/kernel/time.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c index 04508158815c..13d94f0f94a0 100644 --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -180,9 +180,16 @@ static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm) static int rtc_generic_set_time(struct device *dev, struct rtc_time *tm) { time64_t secs = rtc_tm_to_time64(tm); - - if (pdc_tod_set(secs, 0) < 0) + int ret; + + /* hppa has Y2K38 problem: pdc_tod_set() takes an u32 value! */ + ret = pdc_tod_set(secs, 0); + if (ret != 0) { + pr_warn("pdc_tod_set(%lld) returned error %d\n", secs, ret); + if (ret == PDC_INVALID_ARG) + return -EINVAL; return -EOPNOTSUPP; + } return 0; } -- cgit