Hi,
On Wednesday 23 December 2009 08:06:03 nitesh suthar wrote:
> hello,dear all
>
> I having problem when using uvcvideo.ko ,Would any one help me in this.
>
> I got error as :
>
> videodev: has no release callback. Please fix your driver for proper sysfs
> support
>
> I am using linux 2.6.24 kernel . And download latest uvc driver .I am using
> cross compiler gcc- 4.2.2-eabi
>
> while I am compiling uvc driver using this compiler and kernel path I got
> error in v4l2-dev.h file that
>
> In file included from
> /home/rajiv/6410/ExperimentUVC/UVC/uvcvideo-033b5968aa1a/v4l/../linux/inclu
> de/media/v4l2-common.h:30, from
> /home/rajiv/6410/ExperimentUVC/UVC/uvcvideo-033b5968aa1a/v4l/uvc_driver.c:3
> 7:
> /home/rajiv/6410/ExperimentUVC/UVC/uvcvideo-033b5968aa1a/v4l/../linux/incl
> ude/media/v4l2-dev.h: In function 'video_device_node_name':
> /home/rajiv/6410/ExperimentUVC/UVC/uvcvideo-033b5968aa1a/v4l/../linux/inclu
> de/media/v4l2-dev.h:159: error: implicit declaration of function 'dev_name'
> /home/rajiv/6410/ExperimentUVC/UVC/uvcvideo-033b5968aa1a/v4l/../linux/inclu
> de/media/v4l2-dev.h:159: warning: return makes pointer from integer without
> a cast
>
> after getting this error I change function video_device_node_name as:
> old function is
> static inline const char *video_device_node_name(struct video_device *vdev)
> {
> #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
> return vdev->dev.class_id;
> #else
> return dev_name(&vdev->dev);
> #endif
> }
>
> I have changed this function as
> static inline const char *video_device_node_name(struct video_device *vdev)
> {
> #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
> return vdev->dev.class_id;
> #else
> return "/dev/video0";
> #endif
> }
>
>
> after replacing this dev_name it is got compiled easily.
This issue has been fixed in the uvcvideo tree on linuxtv.org. Could you get
the latest version and see if you still get an oops ?
> and when I loaded it and trying to execute test program for dev/video0 then
> I got error as
>
> Unable to handle kernel NULL pointer dereference at virtual address
> 00000004 pgd=c6a54000
> [00000004] *pgd=56b57031, *pte=00000000,*ppte=00000000
> internal error:Oops:17[#1]
> Modules linked in : uvcvideo
> .....so many lines and last line is
> Sementation fault
>
> If any one knows the solution for this problem Please guide me
--
Regards,
Laurent Pinchart
_______________________________________________
Linux-uvc-devel mailing list
Linux-uvc-devel@lists.berlios.de
https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
