From: Alexandre Courbot <gnurou@gmail.com>
Date: Wed, 9 Feb 2011 03:18:46 +0000 (+0000)
Subject: serial: sh-sci: prevent setup of uninitialized serial console
X-Git-Tag: v2.6.39-rc3~16^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2267a6b095afb84b5766d6646e581b9054704d9;p=pandora-kernel.git

serial: sh-sci: prevent setup of uninitialized serial console

Commit 906b17dc089f7fa87e37a9cfe6ee185efc90e0da introduced a condition
where the kernel will crash unless a earlyprintk parameter is specified.

Without this parameter, sci_console_init is called during early console
setup without any port being initialized, and the kernel crashes a
little bit later when uart_set_options attemps to invoke set_termios on a
port with an ops member equal to NULL.

This patch just checks in sci_console_init that the port is properly
initialized, and aborts the early console setup if it is not.

Signed-off-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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