From: David S. Miller <davem@sunset.davemloft.net>
Date: Mon, 18 Sep 2006 08:47:13 +0000 (-0700)
Subject: [OPENPROMIO]: Handle current_node being NULL correctly.
X-Git-Tag: v2.6.18~12^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b9b64e6e89fc5a6ef220747115c5b7764614ca3f;p=pandora-kernel.git

[OPENPROMIO]: Handle current_node being NULL correctly.

If the user tries to traverse to the next node of the
last node, we get NULL in current_node and a zero phandle
returned.  That's fine, but if the user tries to obtain
properties in that state, we try to dereference a NULL
pointer in the downcall to the of_*() routines.

So protect against that.

Signed-off-by: David S. Miller <davem@davemloft.net>
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