Date: Wed, 18 Jan 2006 20:45:54 +0100
From: Pavel Machek <pavel@ucw.cz>
To: Kristen Accardi <kristen.c.accardi@intel.com>
Cc: linux-kernel@vger.kernel.org, greg@kroah.com,
       pcihpd-discuss@lists.sourceforge.net, len.brown@intel.com,
       linux-acpi@vger.kernel.org
Subject: Re: [Pcihpd-discuss] Re: [patch 0/4]  Hot Dock/Undock support
Message-ID: <20060118194554.GA1502@elf.ucw.cz>
References: <1137545813.19858.45.camel@whizzy> <20060118130444.GA1518@elf.ucw.cz> <1137609747.31839.6.camel@whizzy>
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Hi!

> > > This series of patches is against the -mm kernel, and will enable
> > > docking station support.  It is an early patch, but still pretty 
> > > functional, so I think it's worthwhile to include at this point.
> > > For some laptops, it's necessary to use the pci=assign-busses kernel 
> > > parameter, because some _DCK methods will attempt to assign bus numbers
> > > to the dock bridge (incorrectly).
> > 
> > On thinkpad X32: I selected
...
> > Recompiled, rebooted with machine out of dock. /sys/bus/pci/slots/ is
> > empty. I then inserted machine into dock, and locked it:
> > 
> > root@amd:/sys/bus/pci/slots# echo dock > /proc/acpi/ibm/dock
> > root@amd:/sys/bus/pci/slots# ls
> > root@amd:/sys/bus/pci/slots#
> > 
> > ...still empty. What am I doing wrong?
> 
> You may not use the ibm_acpi driver at the same time as the acpiphp
> driver for docking.  This is because the ibm_acpi driver also tries to
> handle the dock event notification, and doesn't actually do any
> hotplugging of the devices.  So, you want to set that config option to
> N.  What you are doing above is actually writing to the ibm_acpi
> driver.

Done.

> I didn't provide a way to do undocking via software. I just use the
> button on the dock station.  You should however, see something
> in /sys/bus/pci/slots - can you scan your dmesg to make sure that the
> acpiphp driver is running?  You might run it as a module and enable
> debugging:
> 
> modprobe acpiphp debug=1
> 
> This way we can see if it finds your dock slot and registers the notify
> handler.

Result is:

root@amd:/data/l/linux-mm/drivers/pci/hotplug# insmod acpiphp.ko debug=1
insmod: error inserting 'acpiphp.ko': -1 No such device
root@amd:/data/l/linux-mm/drivers/pci/hotplug# dmesg | tail -3
Failure of coda_cnode_make for root: error -19
acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
acpiphp_glue: Total 0 slots
root@amd:/data/l/linux-mm/drivers/pci/hotplug#

Should I have CONFIG_HOTPLUG_PCI_ACPI_IBM set?

								Pavel

-- 
Thanks, Sharp!
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