Date: Tue, 29 Jan 2008 07:00:40 -0800
From: Matthew Dharm <mdharm-kernel@one-eyed-alien.net>
To: Boaz Harrosh <bharrosh@panasas.com>
Cc: Greg KH <greg@kroah.com>, Jens Axboe <jens.axboe@oracle.com>,
       linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
       linux-scsi@vger.kernel.org
Subject: Re: [BUG] 2.6.24-git usb reset problems
Message-ID: <20080129150040.GB16080@one-eyed-alien.net>
Mail-Followup-To: Boaz Harrosh <bharrosh@panasas.com>,
	Greg KH <greg@kroah.com>, Jens Axboe <jens.axboe@oracle.com>,
	linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
	linux-scsi@vger.kernel.org
References: <20080128204935.GI15220@kernel.dk> <20080128212114.GA15586@kroah.com> <479F18D3.9030709@panasas.com>
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On Tue, Jan 29, 2008 at 02:15:15PM +0200, Boaz Harrosh wrote:
> Greg KH wrote:
> > On Mon, Jan 28, 2008 at 09:49:35PM +0100, Jens Axboe wrote:
> >> Hi,
> >>
> >> Running latest -git (head 91525300baf162e83e923b09ca286f9205e21522) and
> >> connecting my cf usb storage device yields and endless stream of:
> >>
> >> Initializing USB Mass Storage driver...
> >> scsi6 : SCSI emulation for USB Mass Storage devices
> >> usb-storage: device found at 2
> >> usb-storage: waiting for device to settle before scanning
> >> usbcore: registered new interface driver usb-storage
> >> USB Mass Storage support registered.
> >> scsi 6:0:0:0: Direct-Access     Generic  STORAGE DEVICE   0125 PQ: 0
> >> ANSI: 0
> >> sd 6:0:0:0: [sdb] 4001760 512-byte hardware sectors (2049 MB)
> >> sd 6:0:0:0: [sdb] Write Protect is off
> >> sd 6:0:0:0: [sdb] Mode Sense: 02 00 00 00
> >> sd 6:0:0:0: [sdb] Assuming drive cache: write through
> >> sd 6:0:0:0: [sdb] 4001760 512-byte hardware sectors (2049 MB)
> >> sd 6:0:0:0: [sdb] Write Protect is off
> >> sd 6:0:0:0: [sdb] Mode Sense: 02 00 00 00
> >> sd 6:0:0:0: [sdb] Assuming drive cache: write through
> >>  sdb: sdb1
> >> sd 6:0:0:0: [sdb] Attached SCSI removable disk
> >> sd 6:0:0:0: Attached scsi generic sg1 type 0
> >> scsi 6:0:0:1: Direct-Access     Generic  STORAGE DEVICE   0125 PQ: 0
> >> ANSI: 0
> >> usb 5-1: reset high speed USB device using ehci_hcd and address 2
> >> usb 5-1: reset high speed USB device using ehci_hcd and address 2
> >> usb 5-1: reset high speed USB device using ehci_hcd and address 2
> >> usb 5-1: reset high speed USB device using ehci_hcd and address 2
> >> usb 5-1: reset high speed USB device using ehci_hcd and address 2
> >> usb 5-1: reset high speed USB device using ehci_hcd and address 2
> >> usb 5-1: reset high speed USB device using ehci_hcd and address 2
> >> [...]
> >>
> >> until I disconnect it. The device doesn't work. Worked fine in 2.6.24.
> >> I'm attaching boot messages and my .config.
> >=20
> > That's a bit wierd, as we haven't added any USB patches to the -git tree
> > yet after 2.6.24 :)
> >=20
> > Could this be caused by some scsi changes perhaps?
> >=20
> > thanks,
> >=20
> > greg k-h
> > -
> Yes it is ;)
>=20
> Jens could you test the patch below? if it works I'll submit a proper
> patch. Please forgive me for the bug.
>=20
> Matthew, Greg, Is there a way to extract from messages the usb storage tr=
ansport
> used? I'm guessing it is freecom do to the fact that I find a bug there.

The freecom transport is exceptionally rare these days.  It's primary user
was a device made by a company that went out of business.

Matt

--=20
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.=
net=20
Maintainer, Linux USB Mass Storage Driver

Way to go, lava boy.
					-- Stef to Greg
User Friendly, 3/26/1998

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