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That helper returns a device reference that must be released by the caller. select_usb_power_delivery_store() only needs this reference while calling the pd_set callback. Drop it once the callback returns. Otherwise the sysfs write can pin the selected USB Power Delivery object and prevent it from being released on unregister. Fixes: a7cff92f0635 ("usb: typec: USB Power Delivery helpers for ports and partners") Cc: stable@vger.kernel.org Signed-off-by: Shuangpeng Bai --- v2: - Cc stable@vger.kernel.org as requested. drivers/usb/typec/class.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 0977581ad1b6..0595e8cb83aa 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -1619,6 +1619,7 @@ static ssize_t select_usb_power_delivery_store(struct device *dev, return -EINVAL; ret = port->ops->pd_set(port, pd); + put_device(&pd->dev); if (ret) return ret; -- 2.43.0