Re: [PATCH] usb: xhci: Simplify clearing the Event Interrupt bit

[Mathias Nyman]

On 3/20/26 22:28, Michal Pecio wrote:
> On Fri, 20 Mar 2026 21:18:09 +0100, Michal Pecio wrote:
> > Several other cards (VL805, FL1100, uPD720202, ASM1142, ASM3142) wake
> > from s2idle but not S3, including with a keyboard.
> >
> > No difference if this patch is reverted, no difference if PCD is
> > explicitly cleared in xhci_suspend(). And same problem in Windows.
> > Looks like a HW deficiency in those cards.
>
> Actually it's quite obvious: I know for sure that some of them derive
> Vbus from the 12V rail, and chances are that the others also do.
>
> Now I'm surprised that NEC and Etron cards bothered to make it work.
> Looks like PCIe cards aren't the best option for testing suspend.

Thanks for testing and clarifying

Adding this patch to queue

-Mathias