Re: [pwc] patch to add sysfs leds interface to 10.0.7a

[Patrik Jakobsson <>]

Sandy McArthur wrote:

> Attached is a patch to pwc-10.0.7a that adds <sysfs>/class/ 
> video4linux/video#/leds
> This patch makes it so that you can set the led status with the  
> following values:
> echo on > leds # solid on
> echo off > leds # solid off
> echo <on ms> <off ms> > leds # blinking on and off times in milliseconds
>
> It should also make it so `cat leds` shows the current leds value if  
> your unit supports it. I thought my Logitech QuickCam Pro 3000  
> supported that feature but it doesn't work for me. I dunno?
>
>
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>  
Hi, nice patch!
But it won't help me (and probably not Dominik) because the problem 
isn't that we don't know how to access the led functionallity but that 
the functionallity is broken in the driver for our cameras. I get -32 as 
error code (from pwc_set_leds() ) when trying to change the settings.
The error code is recieved from usb_control_msg(), what does it mean?

   Patrik Jakobsson
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