Make sure to drop the references taken to the PMC OF node and device by of_parse_phandle() and of_find_device_by_node() during probe.

Note the holding a reference to the PMC device does not prevent the PMC regmap from going away (e.g. if the PMC driver is unbound) so there is no need to keep the reference.

Fixes: 2d1021487273 ("phy: tegra: xusb: Add wake/sleepwalk for Tegra210") Cc: stable@vger.kernel.org # 5.14 Cc: JC Kuo jckuo@nvidia.com Signed-off-by: Johan Hovold johan@kernel.org --- drivers/phy/tegra/xusb-tegra210.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/tegra/xusb-tegra210.c b/drivers/phy/tegra/xusb-tegra210.c index ebc8a7e21a31..3409924498e9 100644 --- a/drivers/phy/tegra/xusb-tegra210.c +++ b/drivers/phy/tegra/xusb-tegra210.c @@ -3164,18 +3164,22 @@ tegra210_xusb_padctl_probe(struct device *dev, }

pdev = of_find_device_by_node(np); + of_node_put(np); if (!pdev) { dev_warn(dev, "PMC device is not available\n"); goto out; }

- if (!platform_get_drvdata(pdev)) + if (!platform_get_drvdata(pdev)) { + put_device(&pdev->dev); return ERR_PTR(-EPROBE_DEFER); + }

padctl->regmap = dev_get_regmap(&pdev->dev, "usb_sleepwalk"); if (!padctl->regmap) dev_info(dev, "failed to find PMC regmap\n");

+ put_device(&pdev->dev); out: return &padctl->base; }