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

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Message-ID: <538753BB.6060500@dev.rtsoft.ru>
Date:	Thu, 29 May 2014 19:35:23 +0400
From:	Nikita Yushchenko <nyushchenko@....rtsoft.ru>
To:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
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

29.05.2014 19:33, Nikita Yushchenko пишет:
> 29.05.2014 18:42, One Thousand Gnomes пишет:
>>> 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.
> 
> Unfortunately vid/did/svid/sdid come from ULI 1553 southbridge chip,
> that is used by other hardware as well. AFAIK it is still being
> manufactured, and could appear in PCs or laptops.

Sorry I mistyped in entire thread... Chip is ULI M1575.

Nikita

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