From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Felipe Balbi <balbi@kernel.org>, linux-usb@vger.kernel.org
Cc: Greg KH <greg@kroah.com>, Joel Stanley <joel@jms.id.au>,
Andrew Jeffery <andrew@aj.id.au>
Subject: [v4,2/2] usb/gadget: Add driver for Aspeed SoC virtual hub
Date: Sat, 17 Mar 2018 11:38:46 +1100 [thread overview]
Message-ID: <1521247126.16434.208.camel@kernel.crashing.org> (raw)
On Fri, 2018-03-16 at 09:23 +0200, Felipe Balbi wrote:
> >
> > If I just create a mass storage function set to be "removable" and
> > "cdrom" with no file attached, and enable it, I get an endless stream
> > of resets. It looks like the host constantly does USB resets.
> >
> > I suspect the host is sending SCSI commands that fail and resets
> > as a result, but that's spamming both logs and is rather ... sub
> > optimal.
> >
> > Do we know what's going on ? Is this just TEST_UNIT_READY or some other
> > media check ? Or are we missing some commands we should actually
> > implement in the mass storage gadget ?
>
> enable debugging for mass storage, there's a lot of intersting
> information there.
Yup, I'll do along with other things, I was just probing to see if it
was a known issue before diving into it.
Cheers,
Ben.
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next reply other threads:[~2018-03-17 0:38 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-17 0:38 Benjamin Herrenschmidt [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-03-20 4:36 [v4,2/2] usb/gadget: Add driver for Aspeed SoC virtual hub Benjamin Herrenschmidt
2018-03-17 13:50 Alan Stern
2018-03-17 0:40 Benjamin Herrenschmidt
2018-03-17 0:29 Benjamin Herrenschmidt
2018-03-16 20:56 Alan Stern
2018-03-16 7:23 Felipe Balbi
2018-03-16 0:40 Benjamin Herrenschmidt
2018-03-14 21:03 Benjamin Herrenschmidt
2018-03-14 8:54 Felipe Balbi
2018-03-14 3:53 Benjamin Herrenschmidt
2018-03-12 22:35 Benjamin Herrenschmidt
2018-03-09 9:20 Felipe Balbi
2018-01-26 0:01 Benjamin Herrenschmidt
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