linux-kernel - Re: [PATCH 2/2] RFC: Xen pad logic

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Date:	Mon, 26 Mar 2012 12:49:10 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	"Liu, Jinsong" <jinsong.liu@...el.com>
Cc:	"lenb@...nel.org" <lenb@...nel.org>,
	"Brown, Len" <len.brown@...el.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"keir.xen@...il.com" <keir.xen@...il.com>,
	Jan Beulich <JBeulich@...e.com>,
	"Li, Shaohua" <shaohua.li@...el.com>
Subject: Re: [PATCH 2/2] RFC: Xen pad logic

On Mon, Mar 26, 2012 at 07:29:09AM +0000, Liu, Jinsong wrote:
> Konrad Rzeszutek Wilk wrote:
> >> +static struct acpi_driver xen_acpi_pad_driver = {
> >> +	.name = "processor_aggregator",
> >> +	.class = ACPI_PROCESSOR_AGGREGATOR_CLASS,
> >> +	.ids = xen_pad_device_ids,
> >> +	.ops = {
> >> +		.add = xen_acpi_pad_add,
> >> +		.remove = xen_acpi_pad_remove,
> >> +	},
> >> +};
> >> +
> >> +static int __init xen_acpi_pad_init(void)
> >> +{
> >> +	return acpi_bus_register_driver(&xen_acpi_pad_driver);
> > 
> > If the acpi_bus_register_driver function could work with multiple
> > acpi_drivers that define the same class (and have some priority) would
> > this be easier?
> 
> Not quite clear your point, could you elaborate more?

I was thinking it could do multiple registration of a driver servicing the
same PNPxxx.
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