tree ab1c2cc6793ab8511b5f66bea2b95d38cbb5e4c7
parent b61e8b0c9e76dacf0b670c3948c3cd738b2379a3
author Philipp Tomsich <philipp.tomsich@theobroma-systems.com> 1505160251 +0200
committer Philipp Tomsich <philipp.tomsich@theobroma-systems.com> 1505760033 +0200

dm: timer: handle being called before dm_root is ready

When used with bootstage recording, dm_timer_init may be called
surprisingly early: i.e. before dm_root is ready. To deal with
this case, we explicitly check for this condition and return
-EAGAIN to the caller (refer to drivers/timer/rockchip_timer.c
for a case where this is needed/used).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>