diff options
Diffstat (limited to 'cpu/arm920t/imx')
| -rw-r--r-- | cpu/arm920t/imx/interrupts.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/cpu/arm920t/imx/interrupts.c b/cpu/arm920t/imx/interrupts.c index 12ae2fa..2f2e754 100644 --- a/cpu/arm920t/imx/interrupts.c +++ b/cpu/arm920t/imx/interrupts.c @@ -81,10 +81,13 @@ ulong get_timer_masked (void) void udelay_masked (unsigned long usec) { - ulong start = get_timer_masked(); + ulong endtime = get_timer_masked() + usec; + signed long diff; - while (get_timer_masked () - start < usec ) - /*NOP*/; + do { + ulong now = get_timer_masked (); + diff = endtime - now; + } while (diff >= 0); } void udelay (unsigned long usec) |