linux-kernel - Re: [linux-usb-devel] [PATCH] usb/hid: The HID Simple Driver Interface 0.3.2 (core)

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Message-ID: <452AD2B5.3040507@gmail.com>
Date:	Tue, 10 Oct 2006 01:52:37 +0300
From:	Anssi Hannula <anssi.hannula@...il.com>
To:	Liyu <raise.sail@...il.com>
CC:	greg <greg@...ah.com>, Randy Dunlap <rdunlap@...otime.net>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-usb-devel <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: [linux-usb-devel] [PATCH] usb/hid: The HID Simple Driver	Interface
 0.3.2 (core)

Liyu wrote:
> Anssi Hannula wrote:
>> One possibility is to do that with symbol_request() and friends. That
>> would not be pretty though, imho.
>>
>> DVB subsystem uses that currently to load frontend modules dynamically,
>> see dvb_attach() and dvb_frontend_detach() in
>> drivers/media/dvb/dvb-core/dvbdev.h and
>> drivers/media/dvb/dvb-core/dvb_frontend.c.
>>
>>   
> This means also can load module dynamically. In apparently, I think it
> have two weaknesses:
>    
>     1. It require module have one exported symbol at least.

True.

>     2. We must handle life cycle of module by myself.

We need to handle reference count, yes.

> Is it right?
> 
> Goodluck
> 
> -Liyu
> 


-- 
Anssi Hannula

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