Messages in this thread | | | Subject | Re: [PATCH] usbip: vudc: check for NULL before use | From | Shuah Khan <> | Date | Tue, 20 Dec 2016 07:31:44 -0700 |
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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.mukherjee@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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