linux-kernel - Re: [PATCH 1/1] : hwmon - new chip driver for TI ADS7828 A-D

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Date:	Tue, 15 Jan 2008 11:31:43 +0100
From:	Jean Delvare <khali@...ux-fr.org>
To:	Steve Hardy <steve@...uxrealtime.co.uk>
Cc:	linux-kernel@...r.kernel.org, lm-sensors@...sensors.org
Subject: Re: [PATCH 1/1] : hwmon - new chip driver for TI  ADS7828 A-D

Hi Steve,

On Mon, 14 Jan 2008 22:28:51 +0000, Steve Hardy wrote:
> > As far as I know boolean parameters take values 0 and 1, not N and Y.
> 
> Not on the systems I am testing on (2.6.24-rc6) - the sysfs interface
> displays boolean parameters as Y/N, and will accept boot parameters as
> either Y/N or 0/1.  Below is a snippet from a test proving this point :
> 
> test@...est:~$ cat /sys/module/ads7828/parameters/se_input
> Y
> test@...est:~$ cat /sys/module/ads7828/parameters/int_vref
> Y
> 
> after appending the ads7828.int_vref=N parameter to the kernel
> command-line :
> 
> Linux 2.6.24-rc6 (shtest) (16:53 on Saturday, 05 January 2002)
> 
> login: test
> test@...est:~$ cat /sys/module/ads7828/parameters/int_vref
> N

Oh. This is news to me, thanks for the information.

> Is it more "correct" to refer to 1/0 in the documentation?
> I just naturally used the same syntax provided by the sysfs nodes

Nah, just scratch this comment of mine, I just didn't know that Y/N was
working for booleans. If you prefer that to document that form that's
alright with me.

(I do believe that it was a mistake to allow two different ways to do
the same thing, but that's a different issue.)

-- 
Jean Delvare
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