linux-kernel - Re: [PATCH] Revert "tty: Fix pty master poll() after slave closes v2"

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Message-ID: <20150109214106.GA7952@kroah.com>
Date:	Fri, 9 Jan 2015 13:41:06 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Jiri Slaby <jslaby@...e.cz>, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Francesco Ruggeri <fruggeri@...stanetworks.com>,
	Francesco Ruggeri <fruggeri@...sta.com>
Subject: Re: [PATCH] Revert "tty: Fix pty master poll() after slave closes v2"

On Tue, Dec 30, 2014 at 07:31:06AM -0500, Peter Hurley wrote:
> On 12/30/2014 07:17 AM, Peter Hurley wrote:
> > This reverts commit c4dc304677e8d566572c4738d95c48be150c6606.
> > This fix is superseded by commit 52bce7f8d4fc633c9a9d0646eef58ba6ae9a3b73,
> > 'pty, n_tty: Simplify input processing on final close'.
> > 
> > The final close now waits for input processing to complete before
> > destroying the pty, so poll() does not need to special case this
> > condition.
> 
> Greg,
> 
> As noted in this commit log, commit c4dc304677e8d566572c4738d95c48be150c6606,
> 'tty: Fix pty master poll() after slave closes v2', is not required
> after commit 52bce7f8d4fc633c9a9d0646eef58ba6ae9a3b73,
> 'pty, n_tty: Simplify input processing on final close'
> 
> However, 'tty: Fix pty master poll() after slave closes v2' is appropriate
> for stable back to v3.12.

I don't understand, what needs to go to a stable tree and what doesn't?

confused,

greg k-h
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