On Wed, 24 Jun 2009, Prabhu Chawandi wrote: > In the devio.c, > > I have added a case to return the speed and other descriptors, > > call : > ret = usb_control_msg(pRootHub, usb_sndctrlpipe(pRootHub, 0), > USB_REQ_CLEAR_FEATURE, USB_RT_PORT, USB_PORT_FEAT_POWER, > port_num + 1, NULL, 0, HZ); > > The above call is returning err : -32 EPIPE. > > The above call is working file for the rear port while the same is not > working for the fromt port. Is this question related to $SUBJECT? I don't see any connection... > Anythig am I missing ? I am testing it for mass stoage device... In most host controllers for personal computers, the hardware does not support turning off port power. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
