Messages in this thread | | | From | Peter Chen <> | Subject | RE: [PATCH v1 2/2] usb:cdns3 Add Cadence USB3 DRD Driver | Date | Wed, 12 Dec 2018 09:24:59 +0000 |
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> > > > 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
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