On Tue, 2026-02-24 at 10:08 +0800, Shawn Lin wrote:

在 2026/02/24 星期二 8:04, Jakub Kicinski 写道:

quoted

On Mon, 23 Feb 2026 23:29:40 +0800 Shawn Lin wrote:

quoted

pcim_alloc_irq_vectors() and pcim_alloc_irq_vectors_affinity() are created for
pci device drivers which rely on the devres machinery to help cleanup the IRQ
vectors.

If you can please add this API with just a few users, and then convert
remaining users via the subsystem trees in the next cycle.
There's no need to risk wasting maintainer time on conflicts with
conversions like this.

Thanks for the suggestion, Jakub. I have little experience with 
cross-subsystem cleanups like this, so your suggestion is very helpful.

When I removed the hybrid nature of pci_request_region() et al., I
concluded that there were so few users that doing them all in one run
was sufficient.

For larger reworks, like removing pcim_iomap_table(), a slower step-by-
step strategy is necessary for the reasons that Jakub details.

It is then smart to omit an easy to port subsystem / driver for the
ultimate patch series where one then removes the hybrid behavior from
PCI itself, after porting the last driver.

In general,  as Jakub details, those step-by-step cleanups are a bit
safer, since you can proof valid behavior early on and in case of an
explosion they are very easy to revert.


P.