On Fri, 2018-08-03 at 07:53 +0800, Ming Lei wrote:

blk_pm_add_request() calls pm_request_resume() fo=

r waking up device, but

it is wrong because it is async request, which can't guarantee device
will be ready before calling .queue_rq().

That's a longstanding issue and not something that has been introduced by t=
his
patch series. Hence patch 6/9 that issues a warning if pm_request_r=
esume() would
be called.

Bart.