diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/pc80/mc146818rtc.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/drivers/pc80/mc146818rtc.c b/src/drivers/pc80/mc146818rtc.c index 52cfb63275..6e5b92a35c 100644 --- a/src/drivers/pc80/mc146818rtc.c +++ b/src/drivers/pc80/mc146818rtc.c @@ -8,6 +8,9 @@ #include "option_table.h" #include <cbfs.h> #endif +#if CONFIG_HAVE_ACPI_RESUME +#include <arch/acpi.h> +#endif /* control registers - Moto names */ @@ -127,6 +130,7 @@ static void rtc_set_checksum(int range_start, int range_end, int cks_loc) #endif #endif +#ifndef __SMM__ void rtc_init(int invalid) { int cmos_invalid = 0; @@ -192,9 +196,20 @@ void rtc_init(int invalid) PC_CKS_RANGE_END,PC_CKS_LOC); #endif +#if CONFIG_HAVE_ACPI_RESUME + /* + * Avoid clearing pending interrupts in the resume path because + * the Linux kernel relies on this to know if it should restart + * the RTC timerqueue if the wake was due to the RTC alarm. + */ + if (acpi_slp_type == 3) + return; +#endif + /* Clear any pending interrupts */ (void) cmos_read(RTC_INTR_FLAGS); } +#endif #if CONFIG_USE_OPTION_TABLE |