On Wed, 25 Feb 2009 08:44:00 +0100 Németh Márton <nm127@xxxxxxxxxxx> wrote: > What I did with the other out-of-tree em28xx-new driver was that > I printed out the urb->kref.refcount before and after each urb operation. > > The result was that when the urb->complete function is called, the reference > count was still 2, instead of 1. > > I could imagine three possible errors: > 1. there is a bug in uvcvideo driver > 2. there is a bug in v4l framework > 3. there is a bug in usb subsystem > > It would be good if someone who have a deeper knowledge than me on these fields could > give some hints or debug patches which would lead us closer to the solution. Márton, I did a test yesterday night with 2.6.29-rc6. The em28xx in-kernel still has same problem we focused a while ago (except that, before, memory were going exausted on a much higher rate, and we had memory leaks for every close() call). What happens is that, sometimes, memory are not being freed by usb_kill_urb()/usb_unlink_urb(). I'm trying to debug it right now, to understand what's happening. Cheers, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
