linux-kernel - Re: [PATCH 00/26] tty/serial flow control fixes

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Message-ID: <20140908232445.GA28204@kroah.com>
Date:	Mon, 8 Sep 2014 16:24:45 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Jiri Slaby <jslaby@...e.cz>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/26] tty/serial flow control fixes

On Tue, Sep 02, 2014 at 05:39:09PM -0400, Peter Hurley wrote:
> Hi Greg,
> 
> This patch series reworks the internals of tty and serial flow control to
> fix multiple races in both START/STOP flow control and RTS/CTS flow control.
> 
> The main changes in this series are:
> Patch 1
>    Backs out the UPF_HARD_FLOW kludge for 8250. This revert should be
>    for mainline and -next
> 
> Patches 3-7
>    Fixes to x_char handling (ie., sending START/STOP) both in the serial
>    core and to several UART drivers
> 
> Patches 10-15
>    Rename and move ASYNC_CTS_FLOW and ASYNC_CHECK_CD statuses into
>    a private field for the serial core, and add helper functions to test
>    those statuses for UART drivers.
> 
>    This is a necessary step toward making tty port->flags SMP-safe, without
>    introducing a new lock.

I stopped applying at patch 13, due to the objections to that patch.
Please redo the rest of the series and resend.

thanks,

greg k-h
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