From: Sean Anderson sean.anderson@seco.com
commit 0a907ee9d95e3ac35eb023d71f29eae0aaa52d1b upstream.
of_node_put should always be called on device nodes gotten from of_get_*. Additionally, it should only be called after there are no remaining users. To address the first issue, call of_node_put if later steps in ulpi_register fail. To address the latter, call put_device if device_register fails, which will call ulpi_dev_release if necessary.
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/20220127190004.1446909-3-sean.anderson@seco.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/common/ulpi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/usb/common/ulpi.c +++ b/drivers/usb/common/ulpi.c @@ -250,12 +250,16 @@ static int ulpi_register(struct device * return ret;
ret = ulpi_read_id(ulpi); - if (ret) + if (ret) { + of_node_put(ulpi->dev.of_node); return ret; + }
ret = device_register(&ulpi->dev); - if (ret) + if (ret) { + put_device(&ulpi->dev); return ret; + }
dev_dbg(&ulpi->dev, "registered ULPI PHY: vendor %04x, product %04x\n", ulpi->id.vendor, ulpi->id.product);