| title: | Re Question on newly build uvcvideo ko |
|
One correction: After make and make install, uvcvideo module cant
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 :(
[root@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
2.6.33.3-11.1-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.pinchart@xxxxxxxxxxxxxxxx :
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
rel="nofollow" www.linuxtv.org/wiki 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 cant find CNF7129 device, so I cant 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
cant find CNF7129 device.
Thats to be expected, as the new v4l-dvb build you installed replaced the
core v4l modules (such as videodev.ko), and the new version isnt 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
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