Hi,

Sorry to keep you waiting.

On Thu, Nov 21, 2024 at 11:39:14AM +0900, Joe Hattori wrote:

The refcounts of the OF nodes obtained in by of_get_child_by_name() calls in anx7411_typec_switch_probe() are not decremented. Add additional device_node fields to anx7411_data, and call of_node_put() on them in the error path and in the unregister functions.

Fixes: e45d7337dc0e ("usb: typec: anx7411: Use of_get_child_by_name() instead of of_find_node_by_name()") Cc: stable@vger.kernel.org Signed-off-by: Joe Hattori joe@pf.is.s.u-tokyo.ac.jp

---

Changes in v3:

• Add new fields to anx7411_data.
• Remove an unnecessary include.

---

drivers/usb/typec/anx7411.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/typec/anx7411.c b/drivers/usb/typec/anx7411.c index 95607efb9f7e..e714b04399fa 100644 --- a/drivers/usb/typec/anx7411.c +++ b/drivers/usb/typec/anx7411.c @@ -290,6 +290,8 @@ struct anx7411_data { struct power_supply *psy; struct power_supply_desc psy_desc; struct device *dev;

• struct device_node *switch_node;
• struct device_node *mux_node;

Please make these fwnodes.

}; static u8 snk_identity[] = { @@ -1099,6 +1101,7 @@ static void anx7411_unregister_mux(struct anx7411_data *ctx) if (ctx->typec.typec_mux) { typec_mux_unregister(ctx->typec.typec_mux); ctx->typec.typec_mux = NULL;

• of_node_put(ctx->mux_node);
  

fwnode_handle_put(ctx->mux_node);

} } @@ -1107,6 +1110,7 @@ static void anx7411_unregister_switch(struct anx7411_data *ctx) if (ctx->typec.typec_switch) { typec_switch_unregister(ctx->typec.typec_switch); ctx->typec.typec_switch = NULL;

• of_node_put(ctx->switch_node);
  

fwnode_handle_put(ctx->switch_node);

} } @@ -1114,28 +1118,29 @@ static int anx7411_typec_switch_probe(struct anx7411_data *ctx, struct device *dev) { int ret;

• struct device_node *node;

• node = of_get_child_by_name(dev->of_node, "orientation_switch");
• if (!node)

• ctx->switch_node = of_get_child_by_name(dev->of_node, "orientation_switch");

ctx->switch_node = device_get_named_child_node(dev, "orientation_switch");

• if (!ctx->switch_node) return 0;

• ret = anx7411_register_switch(ctx, dev, &node->fwnode);

• ret = anx7411_register_switch(ctx, dev, &ctx->switch_node->fwnode); if (ret) { dev_err(dev, "failed register switch");

• of_node_put(ctx->switch_node);
  

  return ret; }

• node = of_get_child_by_name(dev->of_node, "mode_switch");
• if (!node) {

• ctx->mux_node = of_get_child_by_name(dev->of_node, "mode_switch");

ctx->mux_node = device_get_named_child_node(dev, "mode_switch");

• if (!ctx->mux_node) { dev_err(dev, "no typec mux exist"); ret = -ENODEV; goto unregister_switch; }

• ret = anx7411_register_mux(ctx, dev, &node->fwnode);

• ret = anx7411_register_mux(ctx, dev, &ctx->mux_node->fwnode); if (ret) { dev_err(dev, "failed register mode switch");

• of_node_put(ctx->mux_node);
  

  ret = -ENODEV; goto unregister_switch; }

thanks,