6.6-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan@kernel.org
commit bca065733afd1e3a89a02f05ffe14e966cd5f78e upstream.
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 Reviewed-by: Neil Armstrong neil.armstrong@linaro.org Link: https://lore.kernel.org/r/20250724131206.2211-2-johan@kernel.org Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/phy/tegra/xusb-tegra210.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/phy/tegra/xusb-tegra210.c +++ b/drivers/phy/tegra/xusb-tegra210.c @@ -3164,18 +3164,22 @@ tegra210_xusb_padctl_probe(struct device }
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; }