Hi Viral, On Monday 03 May 2010 13:14:11 Viral Mehta wrote: > Hi, > > >This USB video class function driver implements a video capture device > >from the host's point of view. It creates a V4L2 output device on the > >gadget's side to transfer data from a userspace application over USB. > > > >The UVC-specific descriptors are passed by the gadget driver to the UVC > >function driver, making them completely configurable without any > >modification to the function's driver code. > > I wanted to test this code. I git cloned[1] tree. It has v4l2-event.[c,h] > and so I assume that now this tree has support for v4l2 event code. > > But, while compilation, I am getting this error. > [root@viral linux-next]# make uImage > /dev/null && make modules > CHK include/linux/version.h > CHK include/generated/utsrelease.h > make[1]: `include/generated/mach-types.h' is up to date. > CALL scripts/checksyscalls.sh > Building modules, stage 2. > MODPOST 5 modules > ERROR: "v4l2_event_dequeue" [drivers/usb/gadget/g_webcam.ko] undefined! > ERROR: "v4l2_event_init" [drivers/usb/gadget/g_webcam.ko] undefined! > make[1]: *** [__modpost] Error 1 > make: *** [modules] Error 2 > > And by looking at the code, those symbols are not exported and thus the > error is obvious. Can you please point me out where to take v4l2-event > code? I tried to look for on linuxtv.org but was not able to locate the > right code. > > [1]git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-next.git There's a patch pending on the linux-media list to export those two functions. It has been acked by Sakari (the author of the V4L2 events patch set), but not committed by Mauro to his linux-next yet. That should be a matter of days. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
