From: Sascha Hauer <s.hauer@pengutronix.de>
To: Christoph Fritz <chf.fritz@googlemail.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH] USB: host: hub: increase delay after device removal
Date: Wed, 23 May 2018 15:36:26 +0200 [thread overview]
Message-ID: <20180523133626.x2egdqxwmiyllctx@pengutronix.de> (raw)
In-Reply-To: <1526976551.2078.18.camel@googlemail.com>
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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prev parent reply other threads:[~2018-05-23 13:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-28 15:29 Christoph Fritz
2017-01-09 8:38 ` Sascha Hauer
2018-05-17 16:19 ` Christoph Fritz
2018-05-22 7:54 ` Sascha Hauer
2018-05-22 8:09 ` Christoph Fritz
2018-05-23 13:36 ` Sascha Hauer [this message]
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