linux-kernel - Re: [PATCH v2 3/3] tty: Replace goldfish_tty_line

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Message-ID: <20180802110210.65392224@alans-desktop>
Date:   Thu, 2 Aug 2018 11:02:10 +0100
From:   Alan Cox <gnomes@...rguk.ukuu.org.uk>
To:     rkir@...gle.com
Cc:     gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] tty: Replace goldfish_tty_line_count with a
 #define

On Tue, 24 Jul 2018 17:51:33 -0700
rkir@...gle.com wrote:

> From: Roman Kiryanov <rkir@...gle.com>
> 
> The driver never mutates this variable - no benefits of
> keeping it mutable.
> 
> Signed-off-by: Roman Kiryanov <rkir@...gle.com>
> ---
> Changes in v2:
>  - Replaced "const u32" with "#define".

v1 was IMHO definitely better. And you are correct that gcc will not
allocate memory for a static const object unless you do things like take
its address. It will (unlike a define) however properly typecheck
everything.

Alan