On 12/18/2016 03:44 PM, Sudip Mukherjee wrote:
> to_vep() is doing a container_of() on _ep. It is better to do the NULL
> check first and then use it.
> 
> Signed-off-by: Sudip Mukherjee <sudip.mukher...@codethink.co.uk>
> ---
>  drivers/usb/usbip/vudc_dev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c
> index 968471b..32ea604 100644
> --- a/drivers/usb/usbip/vudc_dev.c
> +++ b/drivers/usb/usbip/vudc_dev.c
> @@ -388,10 +388,10 @@ static int vep_dequeue(struct usb_ep *_ep, struct 
> usb_request *_req)
>       unsigned long flags;
>       int ret = 0;
>  
> -     ep = to_vep(_ep);
>       if (!_ep)
>               return -EINVAL;

Hmm. Linus's latest checks _ep and _req. Are you sure you are working
with the latest tree?

>  
> +     ep = to_vep(_ep);
>       udc = ep_to_vudc(ep);
>       if (!udc->driver)
>               return -ESHUTDOWN;
>

thanks,
-- Shuah
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