[linux-audio-user] getting around hotplug (was Re: Keyboard loss @ usb audio disconnect)

Rossco rosscoad at slingshot.co.nz
Tue Nov 15 21:38:38 EST 2005


Ross Vandegrift wrote:

>On Tue, Nov 15, 2005 at 11:27:41PM +0100, Christoph Eckert wrote:
>  
>
>>If you do not need hotplug for other devices, you could completely 
>>remove them from your boot process and load snd_usb_audio statically 
>>during boot time in one of the boot scripts. That's how I do it, 
>>because it also allows to pass parameters to the module.
>>    
>>
>
>Do you know if there's a deterministic way other than hotplug to get
>the dynamic device numbers that a USB device has ben assigned?  If
>there were, I'd abandon hotplug completely.  It's horribly
>overcomplicated, but I can't figure out a way to reproduce it's
>ability to know what device numbers my stuff has been assigned.
>
>Thanks!
>
>  
>
Hi Ross,

You can use udev rules to setup devices so they always get assigned the 
to same device numbers. Not sure whether this would work with audio 
devices but it works fine for USB drive bays and cameras etc.

Ross. :)


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