On Tue, Nov 08, 2022 at 04:02:51PM +0100, Christoph Hellwig wrote:

nvme_reset_work is a little fragile as it needs to handle both resetting
a live controller and initializing one during probe.  Split out the initial
probe and open code it in nvme_probe and leave nvme_reset_work to just do
the live controller reset.

By enabling the controller in probe, you are blocking subsequent
controllers from probing in parallel. Some devices take a very long time
to complete enable, so serializing this process may significantly
increase a system reset time for one with even a modest number of nvme
drives.

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