From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Hurley Subject: Re: [PATCH] n_tty: Remove LINEMODE support Date: Mon, 19 Jan 2015 11:34:55 -0500 Message-ID: <54BD322F.1020401@hurleysoftware.com> References: <1421616632-4077-1-git-send-email-peter@hurleysoftware.com> <54BC2F0A.8040404@symas.com> <54BC3236.1030004@hurleysoftware.com> <54BC3730.706@symas.com> <54BC3C89.3070006@hurleysoftware.com> <20150119045501.GB29596@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20150119045501.GB29596@thunk.org> Sender: linux-kernel-owner@vger.kernel.org To: Theodore Ts'o Cc: Howard Chu , Greg Kroah-Hartman , One Thousand Gnomes , Jiri Slaby , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org List-Id: linux-serial@vger.kernel.org Hi Ted, On 01/18/2015 11:55 PM, Theodore Ts'o wrote: > Line mode goes back to BSD 4.x days, and it's useful over high latency > links --- i.e., the sort of thing that you get with stone age cellular > data networks (i.e., the sort of thing that we still have the US), > amateur packet radio links, etc. So it's certianly a nice to have, if > someone is willing to support it and the maintenance burden on the > rest of the tty stack isn't too onerous. I'm not philosophically opposed to Line mode support, but I am concerned about providing a userspace interface that's not getting tested or used or otherwise not fit for purpose. I copied you on the other email regarding the specific deficiencies so I won't reiterate them here. Perhaps it's fortunate that userspace didn't pick this up; otherwise, this interface would be cast in stone. Regards, Peter Hurley