[pwc] error -12

[michele]

Hello,

I'm using a Philips webcam PCVC720/40 on an embedded platform with linux kernel 2.6.11. If  I plug the webcam it is detected and the driver PWC registers it on /dev/video0. The problem is that I can't comunicate with the device, because if  I try to read it, tapyng:

od /dev/video0  

it returns:

pwc isoc_init() submit_urb 0 failed with error -12
pwc isoc_init() submit_urb 1 failed with error -12
 
the FAQ says that I have to remove EHCI and use UHCI only. Is there another way? bacuase I don't have UHCI but only EHCI (I'm using an embedded platform).

Thank you for any ideas.
Best regards,
Michele Nobis
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