diff options
| -rw-r--r-- | sys/boot/i386/libi386/time.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sys/boot/i386/libi386/time.c b/sys/boot/i386/libi386/time.c index 183ac3c..c27dcf6 100644 --- a/sys/boot/i386/libi386/time.c +++ b/sys/boot/i386/libi386/time.c @@ -62,7 +62,7 @@ bios_seconds(void) * Some BIOSes (notably qemu) don't correctly read the RTC * registers in an atomic way, sometimes returning bogus values. * Therefore we "debounce" the reading by accepting it only when - * we got two identical values in succession. + * we got 8 identical values in succession. * * If we pass midnight, don't wrap back to 0. */ @@ -71,14 +71,16 @@ time(time_t *t) { static time_t lasttime; time_t now, check; - int try; + int same, try; - try = 0; + same = try = 0; check = bios_seconds(); do { now = check; check = bios_seconds(); - } while (now != check && ++try < 1000); + if (check != now) + same = 0; + } while (++same < 8 && ++try < 1000); if (now < lasttime) now += 24 * 3600; |
