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Peter Stuge peter at stuge.seHarald Welte wrote: > > As far as I know, no hub driver exposes an API to do this however - > > but I'd love to be wrong about this, so please tell me if anyone knows! > > The hub drivers inside the kernel export this via the > set_port_feature(.. USB_PORT_FEAT_POWER) function, which core/hub.c > wraps in the hub_power_on() function. > > But it seems like it is only used by suspend/resume and overcurrent > related code paths. Yes, I haven't seen it available in any userspace API on any system. :\ It may be possible to send the request to the hub from userspace, but I haven't tried it. //Peter