On 4/24/07, Oliver Neukum <[EMAIL PROTECTED]> wrote:
> Am Dienstag, 24. April 2007 11:46 schrieb Wael Adel:
> > retval = usb_submit_urb(urb, GFP_KERNEL);
> > if (retval) {
> > err("%s - failed submitting write urb, error %d",
> __FUNCTION__, retval);
> > goto error;
> > }
> >
> > if (buf != NULL)
> > {
> > if (copy_to_user(user_buffer, buf , readsize))
> > {
> > retval = -EFAULT;
> > goto error;
> > }
> > }
>
> You are copying the the buffer to user space without waiting for the
> URB to be executed. That cannot work.
so how can i wait for the urb to be executed then copying the data to
the user space?
is there a flag that i should loop on it or what?
>
> Regards
> Oliver
> --
> SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
> This signature is a legal requirement
>
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