Date: Mon, 28 Jan 2008 13:21:14 -0800
From: Greg KH <greg@kroah.com>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: 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: <20080128212114.GA15586@kroah.com>
References: <20080128204935.GI15220@kernel.dk>
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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.

That's a bit wierd, as we haven't added any USB patches to the -git tree
yet after 2.6.24 :)

Could this be caused by some scsi changes perhaps?

thanks,

greg k-h
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