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SubjectRe: [PATCH 1/8] scsi: ufshpb: Cache HPB Control mode on init
On Sun, Jan 31, 2021 at 07:08:00AM +0000, Avri Altman wrote:
> > >
> > > +static enum UFSHPB_MODE ufshpb_mode;
> >
> > How are you allowed to have a single variable for a device-specific
> > thing? What happens when you have two controllers or disks or whatever
> > you are binding to here? How does this work at all?
> >
> > This should be per-device, right?
> Right. Done.
>
> Not being bickering, AFAIK, there aren't, nor will be in the foreseen future, any multi-ufs-hosts designs.

Why not? What prevents someone from putting 2 PCI ufs host controllers
in a system tomorrow?

> There were some talks in the past about ufs cards, but this is officially off the table.

Never say never :)

Seriously, how can you somehow ensure that a random manufacturer will
not do this?

thanks,

greg k-h

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