linux-kernel - Re: [PATCH] platform: Facilitate the creation of pseduo-platform busses

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Date:	Thu, 05 Aug 2010 08:27:39 -0700
From:	Kevin Hilman <khilman@...prootsystems.com>
To:	Magnus Damm <magnus.damm@...il.com>
Cc:	Patrick Pannuto <ppannuto@...eaurora.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-msm\@vger.kernel.org" <linux-arm-msm@...r.kernel.org>,
	"linux-omap\@vger.kernel.org" <linux-omap@...r.kernel.org>,
	"damm\@opensource.se" <damm@...nsource.se>,
	"lethal\@linux-sh.org" <lethal@...ux-sh.org>,
	"rjw\@sisk.pl" <rjw@...k.pl>,
	"eric.y.miao\@gmail.com" <eric.y.miao@...il.com>,
	"netdev\@vger.kernel.org" <netdev@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>, alan@...rguk.ukuu.org.uk,
	zt.tmzt@...il.com
Subject: Re: [PATCH] platform: Facilitate the creation of pseduo-platform  busses

Magnus Damm <magnus.damm@...il.com> writes:

> On Thu, Aug 5, 2010 at 7:14 AM, Patrick Pannuto <ppannuto@...eaurora.org> wrote:
>> Inspiration for this comes from:
>> http://www.mail-archive.com/linux-omap@vger.kernel.org/msg31161.html
>>
>> RFC: http://lkml.org/lkml/2010/8/3/496
>> Patch is unchanged from the RFC. Reviews seemed generally positive
>> and it seemed this was desired functionality.
>
> Thanks for your patch, it's really nice to see work done in this area!
> I'd like to see something like this merged in the not so distant
> future. At this point I'm not so concerned about the details, so I'll
> restrict myself to this:
>
>> /drivers/my_driver.c
>>        static struct platform_driver my_driver = {
>>                .driver = {
>>                        .name   = "my-driver",
>>                        .owner  = THIS_MODULE,
>>                        .bus    = &my_bus_type,
>>                },
>>        };
>
> I would really prefer not to have the bus type in the here. I
> understand it's needed at this point, but I wonder if it's possible to
> adjust the device<->driver matching for platform devices to allow any
> type of pseudo-platform bus_type.

I totally agree here.  Keeping the drivers ignorant of the bus (or SoC)
they are on will make them much more portable.

Kevin
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