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SubjectRe: modprobe + request_module() deadlock
Date
Gerd Knorr wrote:

>> Well, how about to add a new marker in the driver code such as
>>
>> MODULE_DEPENDS_ON("somemodule");
>>
>> so that depmod can pick it up?
>
> Wouldn't work for me as this isn't static. saa7134 has to look at the
> hardware, then decide whenever it should load saa7134-empress,
> saa7134-dvb or none of them.
>
> On the other hand I don't depend on request_module() waiting for the
> modprobe being finished. So maybe we can solve that with a
> request_module_async()?

Unfortunately I am not an expert here, but wouldn't it be sufficient to
export in sysfs the information needed to distinguish between those two
saa7134-* modules, and then submit a new agent to linux-hotplug-devel? Then
hotplug will take care of loading the correct module (and hotplug is always
called asynchronously).

--
Alexander E. Patrakov

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