From: Geoff Levand <geoffrey.levand@am.sony.com>
Date: Thu, 5 Oct 2006 18:35:16 +0000 (-0700)
Subject: [POWERPC] Minor fix for bootargs property
X-Git-Tag: v2.6.19-rc2~274^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c1ce464d29e5bbf5819b2d7527b7d3030a6d65f1;p=pandora-kernel.git

[POWERPC] Minor fix for bootargs property

Avoid the use of an uninitialized stack variable when the powerpc device tree
bootargs property is either missing or incorrectly defined.  This also makes
CONFIG_CMDLINE work properly under these conditions.  This change adds a test
for the existence of the bootargs property.

early_init_dt_scan_chosen() tests for a zero length bootargs property in its
CONFIG_CMDLINE processing, but the current implementation of
of_get_flat_dt_prop() doesn't assign a value to the length when no property is
found.  Since an automatic variable is used, a stale value from the stack will
be used in the test.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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