Date: Mon, 29 Jan 2007 16:12:24 -0800
From: Greg KH <gregkh@suse.de>
To: Len Brown <lenb@kernel.org>
Cc: Andrew Morton <akpm@osdl.org>, John Keller <jpk@sgi.com>,
       linux-acpi@vger.kernel.org, tony.luck@intel.com,
       linux-ia64@vger.kernel.org, pcihpd-discuss@lists.sourceforge.net,
       linux-kernel@vger.kernel.org, ayoung@sgi.com, jes@sgi.com,
       "Starikovskiy, Alexey" <alexey.y.starikovskiy@linux.intel.com>
Subject: Re: [PATCH 3/3] Altix: Add ACPI SSDT PCI device support (hotplug)
Message-ID: <20070130001224.GA7238@suse.de>
References: <20061115152454.6047.64973.sendpatchset@attica.americas.sgi.com> <200701270157.43631.lenb@kernel.org> <200701270203.15772.lenb@kernel.org> <200701270204.43835.lenb@kernel.org>
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On Sat, Jan 27, 2007 at 02:04:43AM -0500, Len Brown wrote:
> From: John Keller <jpk@sgi.com>
> 
> Support for dynamic loading and unloading of ACPI SSDT tables upon slot
> hotplugs and unplugs.
> 
> On SN platforms, we now represent every populated root bus slot with a single
> ACPI SSDT table containing info for every device and PPB attached to the slot.
>  These SSDTs are generated by the prom at initial boot and hotplug time.  The
> info in these SSDT tables is used by the SN kernel IO "fixup" code (which is
> called at boot and hotplug time).
> 
> On hotplugs (i.e.  enable_slot()), if running with an ACPI capable prom,
> attempt to obtain a new ACPI SSDT table for the slot being hotplugged.  If
> successful, add the table to the ACPI namespace (acpi_load_table()) and then
> walk the new devices and add them to the ACPI infrastructure (acpi_bus_add()).
> 
> On hot unplugs (i.e.  disable_slot()), if running with an ACPI capable prom,
> attempt to remove the SSDT table associated with the slot from the ACPI
> namespace (acpi_unload_table_id()) and infastructure (acpi_bus_trim()).
> 
> From: John Keller <jpk@sgi.com>
> 
>  A bug was fixed where the sgi hotplug driver was removing
>  the slot's SSDT table from the ACPI namespace a bit too early in
>  disable_slot(). Also, we now call acpi_bus_start() subsequent
>  to acpi_bus_add().
> 
> Signed-off-by: Aaron Young <ayoung@sgi.com>
> Cc: Greg KH <greg@kroah.com>

This should go through Kristen, as she is now the pci hotplug
maintainer, not I.

thanks,

greg k-h
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