at86rf230: remove hrtimer on 1 usec delay
According Documentation/timers/timers-howto.txt the usually case for
setting up a hrtimer takes > ~10us. So we should use udelay in this
case so we are sure that the state change was done, before doing the
state change assert.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index f7bd9f3..d0d5bf6 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -545,7 +545,9 @@
}
/* Default delay is 1us in the most cases */
- tim = ktime_set(0, NSEC_PER_USEC);
+ udelay(1);
+ at86rf230_async_state_timer(&ctx->timer);
+ return;
change:
hrtimer_start(&ctx->timer, tim, HRTIMER_MODE_REL);