Re: [PATCH 1/2] usb: Prefer firmware values when determining whether a port is removable

From: Matthew Garrett
Date: Thu Apr 09 2015 - 13:19:13 EST

On Thu, Apr 9, 2015 at 2:31 AM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> Anyway, is this all a Windows 8 requirement? If so, I'll feel
> comfortable making these changes, otherwise we are at the mercy of the
> bios people to randomly get things right, and we all know how often that
> works...

It's covered by
System.Fundamentals.SystemUSB.XHCIControllersMustHaveEmbeddedInfo - I
guess there's an argument for having the order depend on the
controller, but I suspect that anything with _PLD and _UPC objects
will be fine. The alternative means we're just relying on a different
set of firmware information (ie, did the hardware vendor bother
setting the hub flags), so...

Matthew Garrett | matthew.garrett@xxxxxxxxxx
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