From: Vineet Gupta <vgupta@synopsys.com>
Date: Mon, 31 Mar 2014 10:52:09 +0000 (+0530)
Subject: ARC: [arcfpga] Early ARC UART to be only activated by cmdline
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~79^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e87a850b9c92be6a8cf5735c516ec864d65f24dd;p=pandora-kernel.git

ARC: [arcfpga] Early ARC UART to be only activated by cmdline

Earlier CONFIG_SERIAL_ARC_CONSOLE would unconditionally enable the
legacy ARC UART based early console even if platform lacked that UART
(e.g. nSIM OSCI platform).

So a multi-platform image containing the 2 UART drivers won't work.

Fix that by probing the driver only if "earlyprintk=ttyARC0" is present
in cmdline.

Reported-by: Chuck Jordan <cjordan@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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