diff options
Diffstat (limited to 'include/asm-i386')
| -rw-r--r-- | include/asm-i386/mach-default/mach_time.h | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/include/asm-i386/mach-default/mach_time.h b/include/asm-i386/mach-default/mach_time.h index b749aa44a86..ff03cf0fdc3 100644 --- a/include/asm-i386/mach-default/mach_time.h +++ b/include/asm-i386/mach-default/mach_time.h @@ -82,21 +82,8 @@ static inline int mach_set_rtc_mmss(unsigned long nowtime) static inline unsigned long mach_get_cmos_time(void) { unsigned int year, mon, day, hour, min, sec; - int i; - /* The Linux interpretation of the CMOS clock register contents: - * When the Update-In-Progress (UIP) flag goes from 1 to 0, the - * RTC registers show the second which has precisely just started. - * Let's hope other operating systems interpret the RTC the same way. - */ - /* read RTC exactly on falling edge of update flag */ - for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */ - if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP) - break; - for (i = 0 ; i < 1000000 ; i++) /* must try at least 2.228 ms */ - if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)) - break; - do { /* Isn't this overkill ? UIP above should guarantee consistency */ + do { sec = CMOS_READ(RTC_SECONDS); min = CMOS_READ(RTC_MINUTES); hour = CMOS_READ(RTC_HOURS); @@ -104,6 +91,7 @@ static inline unsigned long mach_get_cmos_time(void) mon = CMOS_READ(RTC_MONTH); year = CMOS_READ(RTC_YEAR); } while (sec != CMOS_READ(RTC_SECONDS)); + if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { BCD_TO_BIN(sec); |