gspca                 643792  0 
videodev               29633  1 gspca
v4l2_common            26945  1 videodev
v4l1_compat            16581  1 videodev

my lsusb is below

[root@localhost ~]# lsusb
Bus 005 Device 001: ID 0000:0000  
Bus 005 Device 002: ID 0c45:62c0 Microdia 
Bus 003 Device 002: ID 03f0:171d Hewlett-Packard 
Bus 003 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000  
Bus 002 Device 001: ID 0000:0000  
Bus 004 Device 001: ID 0000:0000  

but when i run luvcview to view the cam i get the following

[root@localhost ~]# luvcview 
luvcview version 0.2.1 
Video driver: x11
A window manager is available
video /dev/video0 
ERROR opening V4L interface 
: No such file or directory