From: David Brownell <david-b@pacbell.net>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Alan Stern <stern@rowland.harvard.edu>,
Matthew Dharm <mdharm-usb@one-eyed-alien.net>,
Greg KH <greg@kroah.com>,
USB development list <linux-usb-devel@lists.sourceforge.net>,
SCSI development list <linux-scsi@vger.kernel.org>
Subject: Re: [linux-usb-devel] Re: USB storage problems on OHCI..
Date: Mon, 22 Sep 2003 10:49:38 -0700 [thread overview]
Message-ID: <3F6F3632.6020300@pacbell.net> (raw)
In-Reply-To: <Pine.LNX.4.44.0309221027480.2160-100000@home.osdl.org>
Linus Torvalds wrote:
> On Mon, 22 Sep 2003, David Brownell wrote:
>
>>In this case, because it's not "EHCI + USB 2.0 hub", it's still using
>>the OHCI companion controller. So that wasn't a new case.
>
>
> Ok. Here's the broken case with an added usb-2 hub in between. It is
> indeed a bit different.
Yes. Instead of getting 64/128 bytes transferred, with -EOVERFLOW
reported, it gets 0/128, with -EPIPE. And the recovery got a bit
confused; it's a STALL but not from the device, it's from the hub.
It might be worth making EHCI use a different code in that case,
if this class of TT-related errors starts to be trouble.
> Again, this case worked fine with the sd.c changes, so it does seem to be
> all related to "big" transfers out of the mode page.
Or at any rate, "big enough" to confuse the device.
Thanks for the additional test results.
- Dave
next prev parent reply other threads:[~2003-09-22 17:44 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20030922004943.E32009@one-eyed-alien.net>
2003-09-22 14:25 ` [linux-usb-devel] Re: USB storage problems on OHCI Alan Stern
2003-09-22 14:31 ` Christoph Hellwig
2003-09-22 15:11 ` Christoph Hellwig
2003-09-22 15:49 ` Patrick Mansfield
2003-09-22 16:09 ` [linux-usb-devel] " Linus Torvalds
2003-09-22 16:42 ` Alan Stern
2003-09-22 17:23 ` Patrick Mansfield
2003-09-22 17:41 ` [linux-usb-devel] " Linus Torvalds
2003-09-22 17:55 ` James Bottomley
2003-09-22 19:55 ` [linux-usb-devel] " Linus Torvalds
2003-09-23 17:47 ` Ruud Linders
2003-09-23 18:16 ` Linus Torvalds
2003-09-24 16:40 ` Ruud Linders
2003-09-24 16:53 ` Linus Torvalds
2003-09-26 18:43 ` Alan Stern
2003-10-03 14:18 ` Alan Stern
2003-10-03 15:05 ` James Bottomley
2003-10-03 21:35 ` Patrick Mansfield
2003-09-22 18:46 ` Alan Cox
2003-09-22 16:37 ` [linux-usb-devel] " Christoph Hellwig
2003-09-22 16:44 ` Patrick Mansfield
2003-09-22 17:21 ` Christoph Hellwig
2003-09-22 19:01 ` Alan Stern
2003-09-22 15:50 ` Alan Stern
2003-09-22 15:58 ` Patrick Mansfield
2003-09-22 16:36 ` [linux-usb-devel] " Alan Stern
2003-09-22 16:38 ` Christoph Hellwig
2003-09-22 15:29 ` [linux-usb-devel] " Linus Torvalds
2003-09-22 16:22 ` David Brownell
2003-09-22 16:31 ` [linux-usb-devel] " Linus Torvalds
2003-09-22 17:13 ` David Brownell
2003-09-22 17:29 ` Linus Torvalds
2003-09-22 17:49 ` David Brownell [this message]
2003-09-22 18:40 ` [linux-usb-devel] " Linus Torvalds
2003-09-22 19:14 ` Alan Stern
2003-09-22 16:58 ` [linux-usb-devel] " Martin Diehl
2003-09-22 17:19 ` David Brownell
2003-09-22 18:55 Andries.Brouwer
2003-09-22 19:28 ` [linux-usb-devel] " James Bottomley
-- strict thread matches above, loose matches on Subject: below --
2003-09-22 19:56 Andries.Brouwer
2003-09-22 20:48 ` Alan Stern
2003-09-22 20:51 ` Matthew Dharm
2003-09-23 14:04 ` James Bottomley
2003-09-22 22:55 Pat LaVarre
2003-09-29 14:54 ` Pat LaVarre
2003-09-22 23:07 Andries.Brouwer
2003-09-23 14:37 Andries.Brouwer
2003-09-23 14:51 ` James Bottomley
2003-09-23 15:46 ` Linus Torvalds
2003-09-23 15:23 Alan Stern
2003-09-24 14:10 ` [linux-usb-devel] " James Bottomley
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