linux-kernel - [PATCH v3 1/3] usb: ulpi: Move of_node_put to ulpi_dev

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Date:   Thu, 27 Jan 2022 14:00:02 -0500
From:   Sean Anderson <sean.anderson@...o.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        linux-kernel@...r.kernel.org,
        Sean Anderson <sean.anderson@...o.com>
Subject: [PATCH v3 1/3] usb: ulpi: Move of_node_put to ulpi_dev_release

Drivers are not unbound from the device when ulpi_unregister_interface
is called. Move of_node-freeing code to ulpi_dev_release which is called
only after all users are gone.

Fixes: ef6a7bcfb01c ("usb: ulpi: Support device discovery via DT")
Signed-off-by: Sean Anderson <sean.anderson@...o.com>
---

Changes in v3:
- Use separate patch for moving of_node_put from unregister to release

 drivers/usb/common/ulpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c
index 4169cf40a03b..c90a1ab705a3 100644
--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c
@@ -127,6 +127,7 @@ static const struct attribute_group *ulpi_dev_attr_groups[] = {
 
 static void ulpi_dev_release(struct device *dev)
 {
+	of_node_put(dev->of_node);
 	kfree(to_ulpi_dev(dev));
 }
 
@@ -296,7 +297,6 @@ EXPORT_SYMBOL_GPL(ulpi_register_interface);
  */
 void ulpi_unregister_interface(struct ulpi *ulpi)
 {
-	of_node_put(ulpi->dev.of_node);
 	device_unregister(&ulpi->dev);
 }
 EXPORT_SYMBOL_GPL(ulpi_unregister_interface);
-- 
2.25.1