net: thunderx: add missing of_node_put

for_each_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
local idexpression r.n;
expression r,e;
@@

 for_each_child_of_node(r,n) {
   ...
(
   of_node_put(n);
|
   e = n
|
+  of_node_put(n);
?  break;
)
   ...
 }
... when != n
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index 574c49278900943e5584fa9658f7eb6adb2d7452..180aa9fabf4820df042f18cba8c39d5ce1668e9d 100644 (file)
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -977,8 +977,10 @@ static int bgx_init_of_phy(struct bgx *bgx)
                SET_NETDEV_DEV(&bgx->lmac[lmac].netdev, &bgx->pdev->dev);
                bgx->lmac[lmac].lmacid = lmac;
                lmac++;
-               if (lmac == MAX_LMAC_PER_BGX)
+               if (lmac == MAX_LMAC_PER_BGX) {
+                       of_node_put(np_child);
                        break;
+               }
        }
        return 0;
 }