On Thu, May 19, 2022 at 10:04:34AM +0800, Li Zhengyu wrote:
> The return value of device_wakeup_enable() is unchecked, as the result
> usb_remove_hcd() is unreachable even if device_wakeup_enable() is failed.
>
> Fixes: 78c73414f4f6 ("USB: ohci: add support for tmio-ohci cell")
>
> Signed-off-by: Li Zhengyu <lizhengyu3@xxxxxxxxxx>
> ---
> drivers/usb/host/ohci-tmio.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
> index 49539b9f0e94..8148dc90c066 100644
> --- a/drivers/usb/host/ohci-tmio.c
> +++ b/drivers/usb/host/ohci-tmio.c
> @@ -244,7 +244,7 @@ static int ohci_hcd_tmio_drv_probe(struct platform_device *dev)
> if (ret)
> goto err_add_hcd;
>
> - device_wakeup_enable(hcd->self.controller);
> + ret = device_wakeup_enable(hcd->self.controller);
> if (ret == 0)
> return ret;
But now if there is an error you do not clean up properly, so you have
memory leaks?
How did you test this?
thanks,
greg k-h
