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

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Date:   Thu, 21 Jan 2021 18:57:28 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Jiri Slaby <jirislaby@...nel.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 09:46:58AM -0800, Linus Torvalds wrote:
> 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?

Incremental is best, thanks!