From fc59b4479c172e413df615cea1635247265e07a0 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 2 Oct 2014 13:08:02 +0100 Subject: of: Don't try to search when phandle == 0 A value of '0' isn't a valid phandle, so searching for a node with that phandle is pointless. It will result in nothing but false positives. Signed-off-by: Grant Likely --- drivers/of/base.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/of') diff --git a/drivers/of/base.c b/drivers/of/base.c index 293ed4b687ba..2305dc0382bc 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1021,6 +1021,9 @@ struct device_node *of_find_node_by_phandle(phandle handle) struct device_node *np; unsigned long flags; + if (!handle) + return NULL; + raw_spin_lock_irqsave(&devtree_lock, flags); for (np = of_allnodes; np; np = np->allnext) if (np->phandle == handle) -- cgit v1.2.3