One correction: After make and make install, uvcvideo module can't auto loaded any more. I must manually "insmod uvcvideo.ko" to load it.
Here is lsmod result, I never have chance to make uvcvideo module used bit to 1 :( [r...@user-desktop uvc]# lsmod Module Size Used by uvcvideo 46182 0 rt2860sta 406917 1 battery 7968 0 After 2 questions, there is dmesg from uvcvideo after my manually insmod, any idea? Another question is: If newest v4l code tree has been advanced much than src tree inside 2.6.33 kernel, which v4l src label is nearest from src tree inside 2.6.33 kernel? 3rdd question is: if I want to build v4l driver from src inside 2.6.33 kernel directly. How should I do? (I tried to make menuconfig and make modules from a clean kernel, while insmod the newly build uvcvideo.ko reports: insmod: error inserting './uvcvideo.ko': -1 Invalid module format [ 78.446109] uvcvideo: Found UVC 1.00 device CNF7129 (04f2:b071) [ 78.462540] ------------[ cut here ]------------ [ 78.462569] WARNING: at drivers/media/video/v4l2-dev.c:420 __video_register_device+0x44/0x3d7() [ 78.462581] Hardware name: 1000H [ 78.462588] Modules linked in: uvcvideo(+) rt2860sta(C) battery [ 78.462616] Pid: 690, comm: insmod Tainted: G C 18.104.22.168-11.1-netbook #1 [ 78.462626] Call Trace: [ 78.462647] [<c1030944>] warn_slowpath_common+0x66/0x7d [ 78.462665] [<c12f89ad>] ? __video_register_device+0x44/0x3d7 [ 78.462682] [<c1030968>] warn_slowpath_null+0xd/0x10 [ 78.462697] [<c12f89ad>] __video_register_device+0x44/0x3d7 [ 78.462714] [<c12f8d56>] video_register_device+0xa/0xc [ 78.462744] [<f82e50fc>] uvc_probe+0x9c0/0xb26 [uvcvideo] [ 78.462763] [<c12c1e35>] usb_probe_interface+0xe1/0x136 [ 78.462782] [<c11fff7b>] driver_probe_device+0x87/0x107 [ 78.462799] [<c120003e>] __driver_attach+0x43/0x5f [ 78.462815] [<c11ff907>] bus_for_each_dev+0x3e/0x69 [ 78.462831] [<c11ffe46>] driver_attach+0x14/0x16 [ 78.462846] [<c11ffffb>] ? __driver_attach+0x0/0x5f [ 78.462862] [<c11ff3aa>] bus_add_driver+0x105/0x235 [ 78.462879] [<c1200280>] driver_register+0x7a/0xe1 [ 78.462894] [<c12c1bf6>] usb_register_driver+0x67/0x104 [ 78.462919] [<f82c2000>] ? uvc_init+0x0/0x71 [uvcvideo] [ 78.462942] [<f82c2059>] uvc_init+0x59/0x71 [uvcvideo] [ 78.462958] [<c100113a>] do_one_initcall+0x4d/0x132 [ 78.462977] [<c105a1b6>] sys_init_module+0xa7/0x1db [ 78.462992] [<c10027d0>] sysenter_do_call+0x12/0x26 [ 78.463051] ---[ end trace a67861dcf94e1e3a ]--- [ 78.463064] uvcvideo: Failed to register video device (-22). [ 78.463758] usbcore: registered new interface driver uvcvideo [ 78.463774] USB Video Class driver (v0.1.0) 2010/6/25 Laurent Pinchart <laurent.pinch...@ideasonboard.com>: > Hi Samuel, > > On Friday 25 June 2010 11:25:13 Samuel Xu wrote: >> HI: >> I am using a ASUS netbook with a USB 2.0 web camera (04f2:b071 Chicony >> Electronics Co., Ltd 2.0M UVC WebCam / CNF7129) >> I installed Linux, and the default uvcvideo.ko works (I tried >> gstreamer-properties, which can find CNF7129 device and show correct >> video camera test). >> While I want to try the newest V4L2 build, So I follow >> http://www.linuxtv.org/wiki to: >> 1: get the src code v4l-dvb-9652f85e688a.tar.gz >> 2: make and make install on my netbook. >> 3: reboot system >> >> lsmod shows me uvcvideo module has been loaded, while >> gstreamer-properties can't find CNF7129 device, so I can't use this >> USB 2.0 web camera now. > > Can you look at the kernel log (dmesg) and report messages printed by the > uvcvideo driver ? > >> I also tried re-install original workable Linux, and make v4l again. >> Then copy the newly build uvcvideo.ko to >> /lib/modules/2.6.33.xx/kernel/drivers/media/video/uvc/ >> module still can be found from lsmod, while gstreamer-properties still >> can't find CNF7129 device. > > That's to be expected, as the new v4l-dvb build you installed replaced the > core v4l modules (such as videodev.ko), and the new version isn't compatible > with the uvcvideo driver that came with your kernel. > >> Does it mean I must do some code modification for 04f2:b071 device >> before I build v4l driver? > > In theory, no. > > -- > Regards, > > Laurent Pinchart > -- 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