linux-kernel - Re: [PATCH] [RFC] usb: gadget: composite: Allow idVendor and other module

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Date:	Fri, 22 Feb 2013 00:53:16 +0100
From:	Michal Nazarewicz <mina86@...a86.com>
To:	John Stultz <john.stultz@...aro.org>
Cc:	linux-kernel@...r.kernel.org,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Andrzej Pietrasiewicz <andrzej.p@...sung.com>,
	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org
Subject: Re: [PATCH] [RFC] usb: gadget: composite: Allow idVendor and other module_params to be writable

> On 02/21/2013 02:52 PM, Michal Nazarewicz wrote:
>> If the driver is not compiled as a module, setting those variables
>> won't work anyway.  Or am I missing something?

On Fri, Feb 22 2013, John Stultz wrote:
> Huh. It worked in my testing. But maybe that's only the first time its 
> set? I'll play around with it some more, but yea, on further thought, 
> without unloading the module those values probably shouldn't change. 
> Sorry for the confusion on my part here.

If you are using g_ffs than yes, it's a bit different, since the module
is initialised only after the user space daemon is active, but for all
other gadgets, setting those won't work.

>> If you want to configure things at run-time without having to compile
>> stuff as modules, you need to wait for the configfs based gadgets.
>
> Heh. I thought I was just sorting things out between the out-of-tree 
> android composite, ccg in staging, and functionfs. And now there's 
> *another*?
>
> Any details on configfs based gadget? Is there a git tree somewhere?

There are patches from Andrzej Pietrasiewicz and Sebastian Andrzej
Siewior on the list.  I'm a bit lost in the fate of them and all the
namings.

-- 
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.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michał “mina86” Nazarewicz    (o o)
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