linux-kernel - Re: [PATCH] drivers/scsi/aic7xxx_old: Convert to generic boolean-values

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Date:	Fri, 16 Feb 2007 10:42:12 -0600
From:	James Bottomley <James.Bottomley@...elEye.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	ricknu-0@...dent.ltu.se, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org
Subject: Re: [PATCH] drivers/scsi/aic7xxx_old: Convert to generic
	boolean-values

On Mon, 2007-02-12 at 12:27 -0800, Andrew Morton wrote:
> Given that we now have a standard kernel-wide, c99-friendly way of
> expressing true and false, I'd suggest that this decision can be revisited.
> 
> Because a "true" is significantly more meaningful (and hence readable)
> thing than a bare "1".

OK, I'm really not happy with doing this for three reasons:

1. It's inviting huge amounts of driver churn changing bitfields to
booleans

2. I do find it to be a readability issue.  Like most driver writers,
I'm used to register layouts, and those are simple bitfields, so I don't
tend to think true and false, I think 1 and 0.

3. Having a different, special, type for single bit bitfields (while
still using u<n> for multi bit bitfields) is asking for confusion, and
hence trouble at the driver level.

James

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