Hi Marc,

okay, I will implement it in the next patch,
thank you very much!

Best regards
Ming

Marc Kleine-Budde [off-list ref] 於 2024年10月30日 週三 下午6:12寫道：

On 30.10.2024 16:30:37, Ming Yu wrote:

quoted

I am trying to register interrupt controller for the MFD deivce.
I need to queue work to call handle_nested_irq() in the callback
of the interrupt pipe, right?

I think you can directly demux the IRQ from the interrupt endpoint
callback. But handle_nested_irq() only works from threaded IRQ context,
so you have to use something like generic_handle_domain_irq_safe().

Have a look for how to setup the IRQ domain:

| drivers/net/usb/lan78xx.c
| drivers/net/usb/smsc95xx.c

But the IRQ demux in the lan78xx only handles the PHY IRQ. The ksz
driver does proper IRQ demux:

| net/dsa/microchip/ksz_common.c

regards,
Marc

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