linux-kernel - Re: [PATCH v1 2/2] Input: matrix_keypad - replace header inclusions by forward declarations

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Yy4C5HH3yxssLMPh@google.com>
Date:   Fri, 23 Sep 2022 12:03:00 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 2/2] Input: matrix_keypad - replace header inclusions
 by forward declarations

On Fri, Sep 23, 2022 at 09:46:32PM +0300, Andy Shevchenko wrote:
> When the data structure is only referred by pointer, compiler may not need
> to see the contents of the data type. Thus, we may replace header inclusions
> by respective forward declarations.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  include/linux/input/matrix_keypad.h | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/include/linux/input/matrix_keypad.h b/include/linux/input/matrix_keypad.h
> index 9476768c3b90..b8d8d69eba29 100644
> --- a/include/linux/input/matrix_keypad.h
> +++ b/include/linux/input/matrix_keypad.h
> @@ -3,8 +3,9 @@
>  #define _MATRIX_KEYPAD_H
>  
>  #include <linux/types.h>
> -#include <linux/input.h>
> -#include <linux/of.h>
> +
> +struct device;
> +struct input_dev;

This results in a ton of compile errors. While I believe this change is
a good one, we need to fix users of this include first.

Thanks.

-- 
Dmitry