linux-kernel - Re: [PATCH 2/6] tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer

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Message-ID: <CAHk-=whMm=NM4=ch++YqFn3W=ceNDOhLTFqdP47nxayzVt41Qw@mail.gmail.com>
Date:   Thu, 21 Jan 2021 09:46:58 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Jiri Slaby <jirislaby@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-serial@...r.kernel.org, Christoph Hellwig <hch@....de>,
        Al Viro <viro@...iv.linux.org.uk>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Oliver Giles <ohw.giles@...il.com>,
        Robert Karszniewicz <r.karszniewicz@...tec.de>
Subject: Re: [PATCH 2/6] tty: convert tty_ldisc_ops 'read()' function to take
 a kernel pointer

On Thu, Jan 21, 2021 at 3:02 AM Jiri Slaby <jirislaby@...nel.org> wrote:
>
> n_hdlc_tty_read will return EOVERFLOW when size is 0, so this EFAULT is
> never propagated, if I am looking correctly? n_tty seems to be fine
> (returns zero for zeroed size).

I'll fix that up too.

Greg - same question - do you want an incremental patch, or just a new series?

              Linus