usb: ulpi: Move of_node_put to ulpi_dev_release

BugLink: https://bugs.launchpad.net/bugs/1966118
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@vger.kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Link: https://lore.kernel.org/r/20220127190004.1446909-2-sean.anderson@seco.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c
index 5a4d08de546fe0cd1749f456347f21894cddb9e1..223a3a9b497203444825e96c400af4277324f1d3 100644 (file)
--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c
@@ -132,6 +132,7 @@ 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));
 }
 
@@ -300,7 +301,6 @@ 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);