Re: [PATCH] block: really disable runtime-pm for blk-mq

On Mon, 2018-07-30 at 20:02 +0800, Ming Lei wrote:

Runtime PM isn't ready for blk-mq yet, and commit 765e40b675a9 ("block: disable runtime-pm for blk-mq") tried to disable it. Unfortunately, it can't take effect in that way since user space still can switch it on via 'echo auto > /sys/block/sdN/device/power/control'.

This patch disables runtime-pm for blk-mq really by pm_runtime_disable() and fixes all kinds of PM related kernel crash.

Reviewed-by: Bart Van Assche bart.vanassche@wdc.com