diff options
| author | Grant Likely <grant.likely@linaro.org> | 2014-10-02 13:08:02 +0100 |
|---|---|---|
| committer | Grant Likely <grant.likely@linaro.org> | 2014-10-04 21:20:18 +0100 |
| commit | fc59b4479c172e413df615cea1635247265e07a0 (patch) | |
| tree | a17490b63373d95e7a72de2ffdbd4dd025ebd2e4 | |
| parent | f2051d6a88cd03f74221da887f56d778a1b2f1f1 (diff) | |
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 <grant.likely@linaro.org>
| -rw-r--r-- | drivers/of/base.c | 3 |
1 files changed, 3 insertions, 0 deletions
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) |