On Mon, May 03, 2010 at 02:29:57PM +0200, Laurent Pinchart wrote: > 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. Do you have a pointer to that patch? I'll take it into my usb tree for now, to keep things building, and let Mauro send it to Linus for merging. thanks, greg k-h -- 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
