Re: About Webcam module

[Jean-Francois Moine <moinejf@xxxxxxx>]

On Mon, 14 Sep 2009 23:30:27 +0530
Niamathullah sharief <newbiesha@xxxxxxxxx> wrote:

> Here i am facing a new problem. I tried to compile and install the
> gspca_main and gspca_zc3xx modules separately. I compiled them
> successfully. but i am getting error when inserting that modules
> 
> 
> root@sharief-desktop:/home/sharief/Desktop/video/gspca# insmod
> > gspca_zc3xx.ko
> >
> insmod: error inserting 'gspca_zc3xx.ko': -1 Unknown symbol in module
> >
> root@sharief-desktop:/home/sharief/Desktop/video/gspca# insmod
> gspca_main.ko
> >
> >
> insmod: error inserting 'gspca_main.ko': -1 Unknown symbol in module
> >
> 
> I think this both modules what some other modules to get insert in to
> kernel...But i am sure about that modules. Can anyone help me?

Indeed, the 2 modules videodev and v4l1_compat must be loaded prior to
load first gspca_main and then gspca_zc3xx, as shown by lsmod (below).

Usually, insmod is not directly used. You must use modprobe which looks
at the symbols and loads the required modules.

> On Sat, Sep 12, 2009 at 11:54 AM, Jean-Francois Moine
> <moinejf@xxxxxxx>wrote:
> > 
> > So, your driver is gspca_zc3xx. Then, this module uses the gspca
> > framework, i.e it calls functions of the module gspca_main. This
> > last one calls functions of the common video module videodev. Then
> > again, if v4l1 compatibility is enabled, videodev calls functions
> > of v4l1_compat.
> >
> > lsmod shows all that directly:
> >
> > Module              Size   Used by
> > gspca_zc3xx        55936   0
> > gspca_main         29312   1   gspca_zc3xx
> > videodev           41344   1   gspca_main
> > v4l1_compat        22404   1   videodev


-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/

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