Hello, This question is for LINUX USB gurus:
ov511 and pwc are both linux kernel usb drivers for 2 families of webcams : ov511 chip based webcams and philips-based webcams.
Both are part of the linux kernel (under drivers/usb) (this is only a general description;for details see: http://alpha.dyndns.org/ov511/ http://www.smcc.demon.nl/webcam/).
ov511 has a module parameter named packetsize, which enables changing the maximum Packet Size.
Looking a little at ov511.c shows that it does it by eventually calling usb_set_interface with a different alternate setting.
My question: did anybody tried to use this parameter ?
I am trying to do the same in pwc-if.c ; (even though it does not have that module paramter ; but it has a call to usb_set_interface(). It succeeds in usb_set_interface, but hangs afterwads.
Could it be that the pwc driver does not support a different alternate setting other than the default one (even though it's usb descriptor (under /proc/bus/usb/devices) shows a lot of other alternate settings).
regards, Rami Rosen
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