linux-kernel - Re: [BISECTED] tpm CLKRUN breaks PS/2 keyboard and touchpad on Braswell system

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Message-ID: <20171219202051.GB14814@ziepe.ca>
Date:   Tue, 19 Dec 2017 13:20:51 -0700
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     "Shaikh, Azhar" <azhar.shaikh@...el.com>,
        Javier Martinez Canillas <javierm@...hat.com>,
        James Ettle <james@...le.org.uk>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "james.l.morris@...cle.com" <james.l.morris@...cle.com>
Subject: Re: [BISECTED] tpm CLKRUN breaks PS/2 keyboard and touchpad on
 Braswell system

On Tue, Dec 19, 2017 at 03:04:32PM +0200, Jarkko Sakkinen wrote:

> > That makes it a BIOS bug, not a chipset bug, and we shouldn't be
> > trying to fix it like this in Linux.
> > 
> > Based on the original discussion I always thought this was an Intel
> > chipset bug and applies to all cases.
> 
> It would not be first time when some BIOS issues are circumvented in the
> kernel.

Yes, but we don't circumvent BIOS bugs by detecting the chipset type,
we look for the buggy BIOS.

Jason