linux-kernel - Re: [PATCH 1/3] tty/serial_core: add ISO7816 infrastructure

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] [day] [month] [year] [list]

Date:   Thu, 19 Jul 2018 12:07:05 +0100
From:   Alan Cox <gnomes@...rguk.ukuu.org.uk>
To:     Ludovic Desroches <ludovic.desroches@...rochip.com>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        <linux-serial@...r.kernel.org>, <linux-arch@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <jslaby@...e.com>,
        <arnd@...db.de>, <richard.genoud@...il.com>,
        <nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] tty/serial_core: add ISO7816 infrastructure

> >   
> > > +	if (!port->iso7816_config)
> > > +		return -ENOIOCTLCMD;  
> > 
> > Why this error value?
> >   
> 
> It was a mimic of RS485.

Which is what you want - it means the upper tty layer knows to offer the
ioctl to other places and then return appropriately.

Alan