Re: [PATCH RFC v2 02/18] irq/dev-msi: Add support for a new DEV_MSI irq domain

From: Jason Gunthorpe
Date: Wed Aug 05 2020 - 18:16:02 EST

On Wed, Aug 05, 2020 at 07:18:39PM +0000, Dey, Megha wrote:

> Hence we will only have one create_dev_msi_domain which can be
> called by any device driver that wants to use the dev-msi IRQ domain
> to alloc/free IRQs. It would be the responsibility of the device
> driver to provide the correct device and update the dev->msi_domain.

I'm not sure that sounds like a good idea, why should a device driver
touch dev->msi_domain?

There was a certain appeal to the api I suggested by having everything
related to setting up the new IRQs being in the core code.