linux-kernel - [PATCH 4.19 37/49] usb: ulpi: Move of_node_put to ulpi_dev

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Message-Id: <20220214092449.522306451@linuxfoundation.org>
Date:   Mon, 14 Feb 2022 10:26:03 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sean Anderson <sean.anderson@...o.com>
Subject: [PATCH 4.19 37/49] usb: ulpi: Move of_node_put to ulpi_dev_release

From: Sean Anderson <sean.anderson@...o.com>

commit 092f45b13e51666fe8ecbf2d6cd247aa7e6c1f74 upstream.

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")
Cc: stable <stable@...r.kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Sean Anderson <sean.anderson@...o.com>
Link: https://lore.kernel.org/r/20220127190004.1446909-2-sean.anderson@seco.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/common/ulpi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c
@@ -132,6 +132,7 @@ static const struct attribute_group *ulp
 
 static void ulpi_dev_release(struct device *dev)
 {
+	of_node_put(dev->of_node);
 	kfree(to_ulpi_dev(dev));
 }
 
@@ -300,7 +301,6 @@ EXPORT_SYMBOL_GPL(ulpi_register_interfac
  */
 void ulpi_unregister_interface(struct ulpi *ulpi)
 {
-	of_node_put(ulpi->dev.of_node);
 	device_unregister(&ulpi->dev);
 }
 EXPORT_SYMBOL_GPL(ulpi_unregister_interface);