From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 10 Sep 2014 19:29:56 +0000 (+0200)
Subject: tty: serial: 8250_core: allow to set ->throttle / ->unthrottle callbacks
X-Git-Tag: fixes-for-v3.18-merge-window~14^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=234abab143aef82c0ef1f2de409c0db96b666f3c;p=pandora-kernel.git

tty: serial: 8250_core: allow to set ->throttle / ->unthrottle callbacks

The OMAP UART provides support for HW assisted flow control. What is
missing is the support to throttle / unthrottle callbacks which are used
by the omap-serial driver at the moment.
This patch adds the callbacks. It should be safe to add them since they
are only invoked from the serial_core (uart_throttle()) if the feature
flags are set.

Reviewed-by: Tony Lindgren <tony@atomide.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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