RE: [PATCH v2 2/2] pci: Support "removable" attribute for PCI devices

David Laight
2021-04-26T13:01:18Z

From: Rafael J. Wysocki
> Sent: 26 April 2021 12:49
>
> On Mon, Apr 26, 2021 at 11:17 AM Oliver Neukum <oneukum@suse.com> wrote:
> >
> > Am Freitag, den 23.04.2021, 19:16 -0700 schrieb Rajat Jain:
> > > Export the already available info, to the userspace via the
> > > device core, so that userspace can implement whatever policies it
> > > wants to, for external removable devices.
> >
> > Hi,
> >
> > is there a way to tell apart whether a device can undergo regular
> > surprise removal?
>
> PCI devices located under a removable parent can undergo surprise
> removal. The ones on a Thunderbolt chain too.
>
> > Do we want that?
>
> Do you mean surprise removal? Yes, we do.

Always been true - think of cardbus (PCI pcmcia) cards with
PCI bridges to external PCI expansion chassis containing
additional PCI slots.
The cardbus card is hot removable.

David

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