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From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
To: Oliver Neukum <oneukum@suse.com>
Cc: USB list <linux-usb@vger.kernel.org>
Subject: Re: UCSI failing due to probe() getting version 0
Date: Thu, 12 Aug 2021 11:10:24 +0300	[thread overview]
Message-ID: <YRTXcNcaLTnXfCU/@kuha.fi.intel.com> (raw)
In-Reply-To: <3207f6c5-db56-d38e-66ab-42d6b6166cae@suse.com>

On Wed, Aug 11, 2021 at 04:47:13PM +0200, Oliver Neukum wrote:
> 
> On 11.08.21 15:23, Heikki Krogerus wrote:
> Hi,
> > Because of BIOS bugs.
> >
> > Ideally we should be able to rely on the _STA method of the ACPI
> > device, but unfortunately with UCSI we can't rely on that alone. On
> > some systems the BIOS claims that the device is enabled (based on
> > _STA) even when the platform doesn't actually support UCSI at all.
> >
> > If you remove the check, does the driver work?
> 
> Unfortunately, no it does not:

OK, so your laptop does not support UCSI even though the BIOS claims
it does.

thanks,

-- 
heikki

      reply	other threads:[~2021-08-12  8:10 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05 14:04 UCSI failing due to probe() getting version 0 Oliver Neukum
2021-08-11 13:23 ` Heikki Krogerus
2021-08-11 14:47   ` Oliver Neukum
2021-08-12  8:10     ` Heikki Krogerus [this message]

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