Re: Power-cycle a usb port

[Jukka Marin <jukka.marin%embedtronics.fi@localhost>]

On Sun, Apr 16, 2017 at 01:56:32PM +0000, Emmanuel Dreyfus wrote:
> Hello
> 
> I already asked the question hidden at the end of another message [1]:
> can we power-cycle a USB port? My understanding is that we have no way
> of doing it from userland, but what about from kernel? Even if the capability
> is hardware-dependent, it would be nice to have an ioctl to power off/power
> on a USB port.

I know that there exists hardware that can not control the USB port power
supply.  At least in the non-laptop world.

  -jm