diff options
Diffstat (limited to 'cpu/pxa/interrupts.c')
| -rw-r--r-- | cpu/pxa/interrupts.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/cpu/pxa/interrupts.c b/cpu/pxa/interrupts.c index b335a82..0479a10 100644 --- a/cpu/pxa/interrupts.c +++ b/cpu/pxa/interrupts.c @@ -190,6 +190,8 @@ ulong get_timer_masked (void) void udelay_masked (unsigned long usec) { ulong tmo; + ulong endtime; + signed long diff; if (usec >= 1000) { tmo = usec / 1000; @@ -200,10 +202,12 @@ void udelay_masked (unsigned long usec) tmo /= (1000*1000); } - reset_timer_masked (); + endtime = get_timer_masked () + tmo; - while (tmo >= get_timer_masked ()) - /*NOP*/; + do { + ulong now = get_timer_masked (); + diff = endtime - now; + } while (diff >= 0); } /* |