diff options
Diffstat (limited to 'src/cpu/x86/lapic/apic_timer.c')
| -rw-r--r-- | src/cpu/x86/lapic/apic_timer.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/cpu/x86/lapic/apic_timer.c b/src/cpu/x86/lapic/apic_timer.c index 749fef03c4..e5ce62f3f5 100644 --- a/src/cpu/x86/lapic/apic_timer.c +++ b/src/cpu/x86/lapic/apic_timer.c @@ -21,6 +21,7 @@ #include <stdint.h> #include <console/console.h> #include <delay.h> +#include <thread.h> #include <arch/io.h> #include <arch/cpu.h> #include <cpu/x86/car.h> @@ -95,6 +96,9 @@ void udelay(u32 usecs) { u32 start, value, ticks; + if (!thread_yield_microseconds(usecs)) + return; + if (!timer_fsb || (lapic_read(LAPIC_LVTT) & (LAPIC_LVT_TIMER_PERIODIC | LAPIC_LVT_MASKED)) != (LAPIC_LVT_TIMER_PERIODIC | LAPIC_LVT_MASKED)) |