On Wed, 21 Jan 2009 07:10:38 +0530 Jaswinder Singh Rajput <jaswin...@kernel.org> wrote:
> usr/include/linux/videodev.h is giving 2 warnings in 'make headers_check': > usr/include/linux/videodev.h:19: leaks CONFIG_VIDEO to userspace where it is > not valid > usr/include/linux/videodev.h:314: leaks CONFIG_VIDEO to userspace where it > is not valid > > Whole file is covered with #if defined(CONFIG_VIDEO_V4L1_COMPAT) || !defined > (__KERNEL__) > > It means this file is only valid for kernel mode if CONFIG_VIDEO_V4L1_COMPAT > is defined but in user mode it is always valid. > > Can we choose some better alternative Or can we use this file as: > > #ifdef CONFIG_VIDEO_V4L1_COMPAT > #include <linux/videodev.h> > #endif This is somewhat like what we have on audio devices (where there are OSS and ALSA API's). V4L1 is the old deprecated userspace API for video devices. It is still required by some userspace applications. So, on userspace, it should be included. Also, this allows that one userspace app to be compatible with both V4L2 API (the current one) and the legacy V4L1 one. It should be noticed that are still a few drivers using the legacy API yet to be converted. Cheers, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
