From: Johan Hovold <johan@kernel.org>
To: "Måns Rullgård" <mans@mansr.com>
Cc: Bin Liu <b-liu@ti.com>, Alan Stern <stern@rowland.harvard.edu>,
Johan Hovold <johan@kernel.org>, Greg KH <greg@kroah.com>,
linux-usb@vger.kernel.org
Subject: MUSB interrupt storm on device removal
Date: Thu, 24 Jan 2019 10:25:04 +0100 [thread overview]
Message-ID: <20190124092504.GX3691@localhost> (raw)
On Wed, Jan 23, 2019 at 08:50:38PM +0000, Måns Rullgård wrote:
> Bin Liu <b-liu@ti.com> writes:
>
> >> > > Why doesn't the same problem occur with other types of host controller?
> >> >
> >> > Not sure, I am on musb for most of the times. Maybe other HCD doesn't
> >> > giveback URBs with -EPROTO in such error case.
> >>
> >> ehci-hcd also uses -EPROTO.
> >
> > Is it possible to test the use case on ehci?
> >
> > - connect a multi-ports usb serial device to a hub;
> > - open multiple ports with cat command;
> > - remove the usb serial device from the hub;
> > - console lockup happens?
>
> It doesn't seem to happen using ehci or even musb on Allwinner A20.
> I have only seen the problem with musb on AM3358.
The A20 being dual core may possible explain the difference.
Johan
next reply other threads:[~2019-01-24 9:25 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-24 9:25 Johan Hovold [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-03-07 16:16 MUSB interrupt storm on device removal Bin Liu
2019-03-05 11:30 Måns Rullgård
2019-01-25 15:43 Bin Liu
2019-01-24 16:31 Måns Rullgård
2019-01-24 15:54 Bin Liu
2019-01-24 15:49 Alan Stern
2019-01-24 15:43 Bin Liu
2019-01-24 15:40 Bin Liu
2019-01-24 15:22 Alan Stern
2019-01-24 12:56 Måns Rullgård
2019-01-24 9:22 Johan Hovold
2019-01-24 8:11 Greg Kroah-Hartman
2019-01-23 20:50 Måns Rullgård
2019-01-23 20:44 Alan Stern
2019-01-23 20:12 Bin Liu
2019-01-23 17:42 Alan Stern
2019-01-23 16:53 Bin Liu
2019-01-23 16:05 Alan Stern
2019-01-23 15:21 Bin Liu
2019-01-23 14:55 Johan Hovold
2019-01-23 14:09 Bin Liu
2019-01-23 8:55 Johan Hovold
2019-01-23 6:52 Greg KH
2019-01-22 20:52 Bin Liu
2019-01-22 20:16 Bin Liu
2019-01-22 17:19 Måns Rullgård
2019-01-22 14:57 Bin Liu
2019-01-21 21:20 Måns Rullgård
2019-01-21 16:31 Bin Liu
2019-01-18 20:15 Måns Rullgård
2019-01-10 3:07 Bin Liu
2019-01-09 13:19 Måns Rullgård
2018-12-17 21:36 Måns Rullgård
2018-12-17 20:56 Bin Liu
2018-12-17 19:16 Måns Rullgård
2018-12-17 18:44 Bin Liu
2018-12-17 15:13 Måns Rullgård
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