Re: How to detect overcurrent event from userland

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Hi Alan,

On Dienstag, 23. Februar 2010, Alan Stern wrote:
> On Tue, 23 Feb 2010, Juergen Beisert wrote:
> > is there a way to get an userland application informed about an
> > overcurrent event on a USB connector?
>
> Not specifically.  An application can monitor the system log, looking
> for overcurrent notifications.

By string matching? I was in the hope such kind of notification is a standard 
use case for error handling... :'(

> >  For example to be able to show a message
> > like "Please remove the broken device". Is there also a way to keep this
> > port switched off by the application until the user removes the device
> > and acknowledges the message shown?
>
> There is no way to switch off power to a port at all, let alone keep it
> switched off.  The best you can do is to unbind the hub driver from the
> port's hub -- but then none of the ports on that hub will be usable.

Bad news.

Thanks for you answer.

Juergen
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