linux-kernel - Re: [PATCH] usb: pci-quirks: do not access OHCI

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Message-ID: <20140529154217.6248ae95@alan.etchedpixels.co.uk>
Date:	Thu, 29 May 2014 15:42:17 +0100
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	Nikita Yushchenko <nyushchenko@....rtsoft.ru>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Mathias Nyman <mathias.nyman@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	lugovskoy@....rtsoft.ru
Subject: Re: [PATCH] usb: pci-quirks: do not access OHCI_FMINTERVAL register
 on ULI hw

> I don't know how linux usb subsystem should behave against such
> "half-existing" hardware. Perhaps hanging is not the best idea...
> but maybe it should be fixed elsewhere, e.g. by masking non-wired
> devices in platform PCI setup. Perhaps controlled by some device-tree
> key.

Does it have a unique svid/sdid set for the platform - if so you could
just blacklist that combination of vid/did/svid/sdid.

Alan
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