Messages in this thread |  | | | Date | Sat, 06 Dec 2008 15:47:26 -0600 | | From | Larry Finger <> | | Subject | Re: [RFC][PATCH] p54usb: rewriting rx/tx routines to make use of usb_anchor's facilities |
| |
Christian Lamparter wrote: > > Alan, I've got a question about: > "Create and initialize a usb_anchor structure, and each time you create > a new URB, call usb_anchor_urb(). Then you can free the URB as soon as > it is submitted; the anchor will keep it pinned until it completes, and > it is automatically removed from the anchor when the completion routine > is called." > > Do we have to call usb_free_urb again, if we're resubmitting the urb in the > complete callback? (the code what I'm referring to is p54u_rx_cb in p54usb.c)
I am very interested in the answer to this question. My interpretation is that you cannot resubmit the urb after it has been posted to usb_anchor_usb() because the USB core will have deleted it, and that the callback routine will have to allocate a new urb, anchor it, and then free it as well.
Larry
|  |