cpu: Cleanup clearing of doorbells on P9

We currently do a rather pointless msgclr prior to setting
in_sleep/in_idle (with no ordering guarantee which isn't great).

We also do the final msgsync/msgclr after setting in_sleep/in_idle
back to false which while probably ok, isn't that great, we should
do msgsync first thing when waking up.

Finally, do p9_dbell_receive() before skip_sleep.

So take out the first msgclr, swap the final p9_dbell_receive() and
add a sync() for good measure and match what p8 does.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>

0 files changed, 0 insertions, 0 deletions