RE: [PATCH v1 2/2] usb:cdns3 Add Cadence USB3 DRD Driver

[Peter Chen]

> >
> > Interrupt handler (hardirq context) at CPU0, and process at CPU1, eg
> > role switch, unload module, etc.
> 
> the process at CPU1 would need to disable interrupts (spin_lock_irq() or
> spin_lock_irqsave()), not the hardirq on CPU0 as that already runs with interrrupts
> disabled.
> 
> https://www.kernel.org/doc/html/latest/kernel-hacking/locking.html#table-of-
> minimum-requirements
> 

I see, thanks.

Peter