[linux-dvb] Howto automatically load saa7134-dvb?

Johannes Stezenbach js at linuxtv.org
Wed Mar 22 02:14:08 CET 2006


On Mon, Mar 20, 2006, Ole Reinartz wrote:
> I searched in the hg history on linuxtv.org. I guess the change you are 
> refering to is the one introducing the use of this notification 
> mechanism (register_module_depend() and related). Then I searched 
> through the kernel versions to find out how this notification works and 
> how it evolved. I didn't get to the version where this got introduced, 
> but with all versions I saw the mechanism in saa7134-core.c can't ever 
> have been working:
> The notifier call chain is only called once in sys_init_module() in 
> kernel/module.c, and only with MODULE_STATE_COMING as the notfied state. 
> However the function registered as notifier (pending_call() in 
> saa7134-core.c) only acts when MODULE_STATE_LIVE is notified, which I 
> found done nowhere in the kernel.
> So I ask myself (and the list, of course): has this ever worked? Was 
> there once a notification mechanism that sent this notification?
> 
> BTW I tried sending such a notification in sys_init_module() just before 
> the return, after the modules lock got released. But this only produces 
> a deadlock while startup.So now I'm stuck. Maybe I should ask in the 
> kernel list?


MAINTAINERS says:

MODULE SUPPORT
P:      Rusty Russell
M:      rusty at rustcorp.com.au
L:      linux-kernel at vger.kernel.org
S:      Maintained

So it's best to sent mail to him plus lkml and
v4l-dvb-maintainer at linuxtv.org, best including a pointer
to the original discussion with Gerd Knorr.


Thanks,
Johannes



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