From: Rune Torgersen <runet@innovsys.com>
Date: Tue, 20 May 2008 19:39:17 +0000 (-0500)
Subject: cpm_uart: Fix cpm uart corruption with PREEMPT_RT
X-Git-Tag: v2.6.27-rc1~1058^2~30
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=491a7a436cc90e97d666cfc025e141ca3186f86c;p=pandora-kernel.git

cpm_uart: Fix cpm uart corruption with PREEMPT_RT

Fix CPM serial port corruption when running with CONFIG_PREEMPT_RT.
Userland usage of console, and kernel printf's were stepping on each others toes.
Also only take lock if not in an oops.

Signed-off-by: Rune Torgersen <runet@innovsys.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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