On Fri, Mar 25, 2011 at 03:19:36PM +0100, Stefan Seyfried wrote:

Hi,

I have a strange USB-Stick here. It's some "nano"-4G stick, only slightly bigger than the actual USB plug.

With usb_storage.delay_use=1, it's found as:

[139787.814139] usb 2-2: new high speed USB device using ehci_hcd and address 26 [139787.929698] usb 2-2: New USB device found, idVendor=14cd, idProduct=125b [139787.929706] usb 2-2: New USB device strings: Mfr=1, Product=3, SerialNumber=2 [139787.929713] usb 2-2: Product: Micro Line [139787.929717] usb 2-2: Manufacturer: Intenso [139787.929722] usb 2-2: SerialNumber: 000000000021 [139787.930263] scsi23 : usb-storage 2-2:1.0 [139789.842530] scsi 23:0:0:0: Direct-Access Intenso Micro Line PQ: 0 ANSI: 0 CCS [139789.842802] sd 23:0:0:0: Attached scsi generic sg1 type 0 [139790.090805] sd 23:0:0:0: [sdb] 8054783 512-byte logical blocks: (4.12 GB/3.83 GiB)

and everything is fine.

With usb_storage.delay_use=5 (which is default in vanilla kernel AFAICS),

No, I think we dropped it down to 2 seconds.

it is found as:

[140044.180139] usb 2-2: new high speed USB device using ehci_hcd and address 27 [140044.295636] usb 2-2: New USB device found, idVendor=14cd, idProduct=125b [140044.295644] usb 2-2: New USB device strings: Mfr=1, Product=3, SerialNumber=2 [140044.295650] usb 2-2: Product: Micro Line [140044.295655] usb 2-2: Manufacturer: Intenso [140044.295660] usb 2-2: SerialNumber: 000000000021 [140044.296327] scsi24 : usb-storage 2-2:1.0 [140049.296759] scsi 24:0:0:0: Direct-Access-RBC PQ: 2 ANSI: 4 [140049.296943] scsi 24:0:0:0: Attached scsi generic sg1 type 14

and it does not work.

Now even if it works by accident with a SUSE kernel, I'm still interested in why it is so strange. Is this a bug to report on LKML?

Please report it on the linux-usb@vger.kernel.org list. thanks, greg k-h -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-kernel+help@opensuse.org