linux-kernel - Re: [PATCH] cdrom: do not print info list when there is no cdrom device

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Message-ID: <25390602-cfa0-dba3-bfbc-a35ed6b44bcf@kernel.dk>
Date:   Fri, 8 Apr 2022 06:34:04 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Enze Li <lienze@...inos.cn>, phil@...lpotter.co.uk
Cc:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: [PATCH] cdrom: do not print info list when there is no cdrom
 device

On 4/8/22 2:42 AM, Enze Li wrote:
> There is no need to print a list of cdrom entries with blank info when
> no cdrom device exists.  With this patch applied, we get:
> 
> ================================================
> $ cat /proc/sys/dev/cdrom/info
> CD-ROM information, Id:cdrom.c 3.20 2003/12/17
> 
> No device found.
> 
> ================================================

And what did we get before?

Will this potentially break applications that parse it?

-- 
Jens Axboe