Re: Query related to shutting down NVMe during system suspend

Keith Busch
2022-02-09T21:47:26Z

On Thu, Feb 10, 2022 at 02:47:47AM +0530, nitirawa@codeaurora.org wrote:
> IMO, the NVME driver is not associated with any device tree, Instead PCI
> driver is associated with device tree.

That may be good, though: the idle behavior isn't unqiue to nvme. It may
be fine if PCI is the common layer to own this, as long as drivers can
query it.

> So unlike ACPI based platform where we have platform specific DMI matching,
> we don't have equivalent check for DT based platform.

Is there any existing kernel API a driver can call to uniquely identify
such a platform?

> Do we see any concern if we introduce a module param with default not set to
> quick suspend.

As of now, the idea was proposed and was not accepted.