linux-kernel - Re: [PATCH v3] input/keyboard: new OpenCores Keyboard Controller driver

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Date:	Tue, 15 Sep 2009 12:39:04 -0400
From:	Mike Frysinger <vapier.adi@...il.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Javier Herrero <jherrero@...istemas.es>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Bryan Wu <cooloney@...nel.org>
Subject: Re: [PATCH v3] input/keyboard: new OpenCores Keyboard Controller 
	driver

On Tue, Sep 15, 2009 at 12:23, Dmitry Torokhov wrote:
> On Tue, Sep 15, 2009 at 07:16:25AM -0400, Mike Frysinger wrote:
>> On Tue, Sep 15, 2009 at 01:52, Dmitry Torokhov wrote:
>> > OK, below is what I have now... One concern though - don't we need to do
>> > request_mem_region/ioremap for the addr_res?
>>
>> i think so ... these operations are nops on a Blackfin CPU which is
>> probably why it "just works".
>
> Surely request_mem_region is not a nop? I think even if uoremap is a nop
> we need to convert the driver since it does not have to be on a
> Blackfin, does it?

i wasnt suggesting we not add these calls.  i was just stating why
they hadnt already been added -- things work fine on a Blackfin system
w/out ioremap calls because we're a no-mmu system.

>> the input layer can handle input even if it's not registered ?
>
> The device can survive input events as soon as it was allocated with
> input_allocate_device() but of course the event will not get anywhere.
> This is a property that I intend to keep since it is very convenient.

that's fine, i was just curious
-mike
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