[PATCH net v2] net:thunderx:Fix resource leaks in device_for_each_child_node() loops

From: Wang Ming
Date: Wed Jul 05 2023 - 10:35:33 EST


The device_for_each_child_node() loop in
bgx_init_of_phy() function should have
wnode_handle_put() before break
which could avoid resource leaks.
This patch could fix this bug.

Signed-off-by: Wang Ming <machel@xxxxxxxx>
---
drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index a317feb8decb..dad32d36a015 100644
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -1478,8 +1478,10 @@ static int bgx_init_of_phy(struct bgx *bgx)
* cannot handle it, so exit the loop.
*/
node = to_of_node(fwn);
- if (!node)
+ if (!node) {
+ fwnode_handle_put(fwn);
break;
+ }

of_get_mac_address(node, bgx->lmac[lmac].mac);

@@ -1503,6 +1505,7 @@ static int bgx_init_of_phy(struct bgx *bgx)
lmac++;
if (lmac == bgx->max_lmac) {
of_node_put(node);
+ fwnode_handle_put(fwn);
break;
}
}
--
2.25.1