Re: [PATCH] USB: host: hub: increase delay after device removal

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On Tue, May 22, 2018 at 10:09:11AM +0200, Christoph Fritz wrote:
> On Tue, 2018-05-22 at 09:54 +0200, Sascha Hauer wrote:
> > On Thu, May 17, 2018 at 06:19:32PM +0200, Christoph Fritz wrote:
> 
> > > # still 4 USB Devices found, ...?
> > > # starting 'usb' again hits a NULL pointer dereference:
> > 
> > Disconnecting USB devices during runtime of barebox is not really
> > supported. We should probably make that clear somewhere. The code is not
> > prepared for that case and trying to fix it is likely to be a bottomless
> > pit.
> > 
> > Can you reproduce a problem without removing a device?
> 
> Yes I can, please see the scenario below.
> But the USB device plugged in isn't USB certified and Linux-Kernel needs
> the quirk too... so...?

What do the Linux guys say? Maybe someone comes up with a solution that
solves the issue without additional config options.

Sascha


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