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Old 08-26-2005, 09:36 AM   #1
smhs
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A question about power management of usb


Hello,

how to control power of a usb device? I mean how to power on and power off a device connected to USB?

Thanx.
 
Old 08-27-2005, 06:23 PM   #2
Electro
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It is still experimental in the kernel. Even if it works, I recommend that you do not use it. Just disconnect the device if you are done with it.
 
Old 08-29-2005, 02:21 AM   #3
smhs
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Thanx Electro for your reply!

That's the problem. I just can't disconnect the device if something goes wrong (for example after a very short fault of power supply of a computer, addresses of usb devices may be lost. To reassign the address of a device, I found the only one solution, is to power the port off and then power it on back). I'm writing a software for embedded linux based system (telecommunication module), which must be automated as much as possible.

Quote:
It is still experimental in the kernel.
Where can I read about this?

Thank you.
 
  


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