From: Peter Hurley <peter@hurleysoftware.com>
Date: Wed, 9 Jul 2014 13:21:14 +0000 (-0400)
Subject: serial: core: Preserve termios c_cflag for console resume
X-Git-Tag: v3.2.64~230
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6fad979c3847f80e0ed868ba3f083aab4032584;p=pandora-kernel.git

serial: core: Preserve termios c_cflag for console resume

commit ae84db9661cafc63d179e1d985a2c5b841ff0ac4 upstream.

When a tty is opened for the serial console, the termios c_cflag
settings are inherited from the console line settings.
However, if the tty is subsequently closed, the termios settings
are lost. This results in a garbled console if the console is later
suspended and resumed.

Preserve the termios c_cflag for the serial console when the tty
is shutdown; this reflects the most recent line settings.

Fixes: Bugzilla #69751, 'serial console does not wake from S3'
Reported-by: Valerio Vanni <valerio.vanni@inwind.it>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: tty_struct::termios is a pointer]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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