linux-kernel - Re: [PATCH 05/16] cx18: fix handling of 'radio' module parameter

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Date:	Tue, 31 Jan 2012 14:45:18 +0100
From:	Danny Kukawka <danny.kukawka@...ect.de>
To:	Andy Walls <awalls@...metrocast.net>
Cc:	Mauro Carvalho Chehab <mchehab@...radead.org>,
	ivtv-devel@...vdriver.org, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>, mchehab@...hat.com
Subject: Re: [PATCH 05/16] cx18: fix handling of 'radio' module parameter

On Dienstag, 31. Januar 2012, Andy Walls wrote:
> On Tue, 2012-01-31 at 05:01 -0500, Andy Walls wrote:
> > On Mon, 2012-01-30 at 20:40 +0100, Danny Kukawka wrote:
> > > Fixed handling of 'radio' module parameter from module_param_array
> > > to module_param_named to fix these compiler warnings in cx18-driver.c:
> >
> > NACK.
> >
> > "radio" is an array of tristate values (-1, 0, 1) per installed card:
> >
> > 	static int radio[CX18_MAX_CARDS] = { -1, -1,
> >
> > and must remain an array or you will break the driver.
> >
> > Calling "radio_c" a module parameter named "radio" is wrong.
> >
> > The correct fix is to reverse Rusty Russel's patch to the driver in
> > commit  90ab5ee94171b3e28de6bb42ee30b527014e0be7
> > to change the "bool" back to an "int" as it should be in
>
>                       ^^^^
> Sorry, a typo here.  Disregard the word "back".

Overseen this. But wouldn't be the correct fix in this case to:
a) reverse the part of 90ab5ee94171b3e28de6bb42ee30b527014e0be7 to:
   get: 
   static unsigned radio_c = 1;
   
b) change the following line:
   module_param_array(radio, bool, &radio_c, 0644);
   to:
   module_param_array(radio, int, &radio_c, 0644);

Without b) you would get a warning from the compiler again.

Danny 
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