linux-kernel - Re: [PATCH] tty_io: Fix a missing-check bug in drivers/tty/tty

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Date:   Wed, 22 May 2019 12:32:37 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     Johan Hovold <johan@...nel.org>
Cc:     Gen Zhang <blackgod016574@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tty_io: Fix a missing-check bug in drivers/tty/tty_io.c

On 22. 05. 19, 12:29, Johan Hovold wrote:
>> Sure, but can class_find_device return NULL in this tty case here?
> 
> Yes, it can and will and that's fine, not all ttys have a struct device
> (e.g. ptys). 

IOW, the code needs a comment, if anything.

thanks,
-- 
js
suse labs