Date: Thu, 29 Oct 2009 09:57:55 +0100
From: Jens Axboe <jens.axboe@oracle.com>
To: Alex Chiang <achiang@hp.com>
Cc: Mark Lord <lkml@rtr.ca>, Greg KH <greg@kroah.com>,
       Linux Kernel <linux-kernel@vger.kernel.org>, jbarnes@virtuousgeek.org,
       linux-pci@vger.kernel.org
Subject: Re: pci-express hotplug
Message-ID: <20091029085755.GB10727@kernel.dk>
References: <20091012150603.GK9228@kernel.dk> <20091012214854.GA14102@ldl.fc.hp.com> <20091013082903.GQ9228@kernel.dk> <20091013172731.GB22797@ldl.fc.hp.com> <20091014081309.GM9228@kernel.dk> <20091020190707.GA25615@ldl.fc.hp.com> <20091026105419.GA10727@kernel.dk> <20091027024841.GA30509@ldl.fc.hp.com> <20091027082635.GS10727@kernel.dk> <20091028213948.GC8749@ldl.fc.hp.com>
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On Wed, Oct 28 2009, Alex Chiang wrote:
> * Jens Axboe <jens.axboe@oracle.com>:
> > 
> > acpiphp: enable_slot - physical_slot = 1
> > power_on_slot
> >   no _PS0
> >   no _PS0
> >   no _PS0
> >   no _PS0
> >   no _PS0
> >   no _PS0
> >   no _PS0
> >   no _PS0
> 
> One final thought -- your DSDT doesn't provide any power methods
> such as _PS[0-3] (I grepped your DSDT so basing my statement on
> more than just the output above), and without those, I'm pretty
> sure that there's no way for the OS to communicate to the BIOS
> that we want to power those slots on.
> 
> So, something funky is going on with your BIOS. This isn't some
> weird proto board or something, is it? ;)

It's pre-production, but not a prototype. I'll take it up with the
vendor.

-- 
Jens Axboe

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