On Mon, Jul 13, 2020 at 05:53:48AM +0000, Xu Wang wrote:
> usb_free_coherent() is safe with NULL usb_pcwd->intr_buffer and
> this check is not required.
>
> Signed-off-by: Xu Wang <vu...@iscas.ac.cn>
Reviewed-by: Guenter Roeck <li...@roeck-us.net>
> ---
> drivers/watchdog/pcwd_usb.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
> index 2f44af1831d0..6726301ac02e 100644
> --- a/drivers/watchdog/pcwd_usb.c
> +++ b/drivers/watchdog/pcwd_usb.c
> @@ -585,9 +585,8 @@ static struct notifier_block usb_pcwd_notifier = {
> static inline void usb_pcwd_delete(struct usb_pcwd_private *usb_pcwd)
> {
> usb_free_urb(usb_pcwd->intr_urb);
> - if (usb_pcwd->intr_buffer != NULL)
> - usb_free_coherent(usb_pcwd->udev, usb_pcwd->intr_size,
> - usb_pcwd->intr_buffer, usb_pcwd->intr_dma);
> + usb_free_coherent(usb_pcwd->udev, usb_pcwd->intr_size,
> + usb_pcwd->intr_buffer, usb_pcwd->intr_dma);
> kfree(usb_pcwd);
> }
>
