Re: [PATCH net v6] usbnet: fix smp_processor_id() use in preemptible context

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From: Oliver Neukum

Date: Tue Oct 13 2026 - 05:07:20 EST

On 12.10.26 22:26, Alan Stern wrote:

Today you fix VHCI, tomorrow some other virtual HCD will cause problems.

Should we document any requirements that all HCDs will have to follow
and that all completion handlers can rely on?

Numerous corner cases. For example I strongly suspect that unloading
the driver for the HC will always complete URBs synchronously.
Please do not do this.

Regards
Oliver