Am 19.04.2017 um 23:07 schrieb Alan Stern:
On Wed, 19 Apr 2017, Andreas Hartmann wrote:

Am 19.04.2017 um 17:49 schrieb Alan Stern:
On Tue, 18 Apr 2017, Andreas Hartmann wrote:

Am 18.04.2017 um 21:31 schrieb Alan Stern:
On Mon, 17 Apr 2017, Andreas Hartmann wrote:

Good start, but there are five (!) other places in this driver where
the same bug occurs, at lines 904, 1350, 1577, 2088, and 2157.  Would
you like to fix them too?

Maybe it would be easier for the driver to allocate a single 512-byte
buffer at the start, and use it for all of these I/O requests.

Yes, it doesn't work yet:

Okay, please try this patch instead.

Thanks for your patch! It's working mostly. Sometimes, there are errors.
The short sequences are the broken one. They are not always behaving equal!

Can you collect a usbmon trace showing a good sequence and a trace
showing a bad sequence?

Hello Alan,

attached are 4 files, 2 examples for good and 2 for bad. Hope it helps!

I don't see anything wrong in the usbmon traces.

This is the corresponding log:

ok 1:

Apr 19 19:25:37 notebook2 kernel: usb 1-1.1: new high-speed USB device number 
20 using ehci-pci
Apr 19 19:25:37 notebook2 kernel: usb 1-1.1: New USB device found, 
idVendor=0cf2, idProduct=6250
Apr 19 19:25:37 notebook2 kernel: usb 1-1.1: New USB device strings: Mfr=1, 
Product=2, SerialNumber=4
Apr 19 19:25:37 notebook2 kernel: usb 1-1.1: Product: UB6250
Apr 19 19:25:37 notebook2 kernel: usb 1-1.1: Manufacturer: ENE Flash
Apr 19 19:25:37 notebook2 kernel: usb 1-1.1: SerialNumber: 606569746801
Apr 19 19:25:37 notebook2 kernel: ums_eneub6250 1-1.1:1.0: USB Mass Storage 
device detected
Apr 19 19:25:37 notebook2 kernel: scsi host6: usb-storage 1-1.1:1.0
Apr 19 19:25:37 notebook2 mtp-probe[22976]: checking bus 1, device 20: 
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
Apr 19 19:25:37 notebook2 mtp-probe[22976]: bus: 1, device: 20 was not an MTP 
device
Apr 19 19:25:38 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init1.bin
Apr 19 19:25:38 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init2.bin
Apr 19 19:25:39 notebook2 kernel: scsi host6: scsi scan: INQUIRY result too 
short (5), using 36

But that is wrong!  Even though it's for a working test.  It means the
usb_stor_set_xfer_buf() subroutine isn't doing what it should.

Please apply the following debugging patch (on top of the previous one)
and let's see what it prints in the kernel log.


These are the log entries. I'm not sure if they contain what you expected:


ok 1

Apr 20 22:24:53 notebook2 kernel: usb 1-1.1: new high-speed USB device number 3 
using ehci-pci
Apr 20 22:24:53 notebook2 kernel: usb 1-1.1: New USB device found, 
idVendor=0cf2, idProduct=6250
Apr 20 22:24:53 notebook2 kernel: usb 1-1.1: New USB device strings: Mfr=1, 
Product=2, SerialNumber=4
Apr 20 22:24:53 notebook2 kernel: usb 1-1.1: Product: UB6250
Apr 20 22:24:53 notebook2 kernel: usb 1-1.1: Manufacturer: ENE Flash
Apr 20 22:24:53 notebook2 kernel: usb 1-1.1: SerialNumber: 606569746801
Apr 20 22:24:53 notebook2 mtp-probe[2246]: checking bus 1, device 3: 
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
Apr 20 22:24:53 notebook2 mtp-probe[2246]: bus: 1, device: 3 was not an MTP 
device
Apr 20 22:24:54 notebook2 kernel: usbcore: registered new interface driver 
usb-storage
Apr 20 22:24:54 notebook2 kernel: usbcore: registered new interface driver uas
Apr 20 22:24:54 notebook2 kernel: ums_eneub6250 1-1.1:1.0: USB Mass Storage 
device detected
Apr 20 22:24:54 notebook2 kernel: scsi host6: usb-storage 1-1.1:1.0
Apr 20 22:24:54 notebook2 kernel: usbcore: registered new interface driver 
ums_eneub6250
Apr 20 22:24:55 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init1.bin
Apr 20 22:24:56 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init2.bin
Apr 20 22:24:56 notebook2 kernel: scsi 6:0:0:0: Direct-Access                   
                 PQ: 0 ANSI: 0
Apr 20 22:24:56 notebook2 kernel: sd 6:0:0:0: [sdb] 3985408 512-byte logical 
blocks: (2.04 GB/1.90 GiB)
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:24:56 notebook2 kernel: sd 6:0:0:0: Attached scsi generic sg2 type 0
Apr 20 22:24:56 notebook2 kernel: sd 6:0:0:0: [sdb] Write Protect is off
Apr 20 22:24:56 notebook2 kernel: sd 6:0:0:0: [sdb] Mode Sense: 0b 00 00 08
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:24:56 notebook2 kernel: sd 6:0:0:0: [sdb] No Caching mode page found
Apr 20 22:24:56 notebook2 kernel: sd 6:0:0:0: [sdb] Assuming drive cache: write 
through
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:24:56 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_rdwr.bin
Apr 20 22:24:56 notebook2 kernel:  sdb: sdb1
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:24:56 notebook2 kernel: sd 6:0:0:0: [sdb] Attached SCSI disk
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 36 dest 36
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 36 dest 252
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 36 dest 252
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: src 36 dest 36
Apr 20 22:24:56 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:25:13 notebook2 kernel: usb 1-1.1: USB disconnect, device number 3


ok 2

Apr 20 22:25:51 notebook2 kernel: usb 1-1.1: new high-speed USB device number 4 
using ehci-pci
Apr 20 22:25:51 notebook2 kernel: usb 1-1.1: New USB device found, 
idVendor=0cf2, idProduct=6250
Apr 20 22:25:51 notebook2 kernel: usb 1-1.1: New USB device strings: Mfr=1, 
Product=2, SerialNumber=4
Apr 20 22:25:51 notebook2 kernel: usb 1-1.1: Product: UB6250
Apr 20 22:25:51 notebook2 kernel: usb 1-1.1: Manufacturer: ENE Flash
Apr 20 22:25:51 notebook2 kernel: usb 1-1.1: SerialNumber: 606569746801
Apr 20 22:25:51 notebook2 kernel: ums_eneub6250 1-1.1:1.0: USB Mass Storage 
device detected
Apr 20 22:25:51 notebook2 kernel: scsi host6: usb-storage 1-1.1:1.0
Apr 20 22:25:51 notebook2 mtp-probe[2293]: checking bus 1, device 4: 
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
Apr 20 22:25:51 notebook2 mtp-probe[2293]: bus: 1, device: 4 was not an MTP 
device
Apr 20 22:25:52 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init1.bin
Apr 20 22:25:53 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init2.bin
Apr 20 22:25:53 notebook2 kernel: scsi host6: scsi scan: INQUIRY result too 
short (5), using 36
Apr 20 22:25:53 notebook2 kernel: scsi 6:0:0:0: Direct-Access                   
                 PQ: 0 ANSI: 0
Apr 20 22:25:53 notebook2 kernel: sd 6:0:0:0: Attached scsi generic sg2 type 0
Apr 20 22:25:53 notebook2 kernel: sd 6:0:0:0: [sdb] 3985408 512-byte logical 
blocks: (2.04 GB/1.90 GiB)
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:25:53 notebook2 kernel: sd 6:0:0:0: [sdb] Write Protect is off
Apr 20 22:25:53 notebook2 kernel: sd 6:0:0:0: [sdb] Mode Sense: 0b 00 00 08
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:25:53 notebook2 kernel: sd 6:0:0:0: [sdb] No Caching mode page found
Apr 20 22:25:53 notebook2 kernel: sd 6:0:0:0: [sdb] Assuming drive cache: write 
through
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:25:53 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_rdwr.bin
Apr 20 22:25:53 notebook2 kernel:  sdb: sdb1
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:25:53 notebook2 kernel: sd 6:0:0:0: [sdb] Attached SCSI disk
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 36 dest 36
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 36 dest 252
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 36 dest 252
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: src 36 dest 36
Apr 20 22:25:53 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:26:01 notebook2 kernel: usb 1-1.1: USB disconnect, device number 4



ok 3

Apr 20 22:26:39 notebook2 kernel: usb 1-1.1: new high-speed USB device number 5 
using ehci-pci
Apr 20 22:26:39 notebook2 kernel: usb 1-1.1: New USB device found, 
idVendor=0cf2, idProduct=6250
Apr 20 22:26:39 notebook2 kernel: usb 1-1.1: New USB device strings: Mfr=1, 
Product=2, SerialNumber=4
Apr 20 22:26:39 notebook2 kernel: usb 1-1.1: Product: UB6250
Apr 20 22:26:39 notebook2 kernel: usb 1-1.1: Manufacturer: ENE Flash
Apr 20 22:26:39 notebook2 kernel: usb 1-1.1: SerialNumber: 606569746801
Apr 20 22:26:39 notebook2 kernel: ums_eneub6250 1-1.1:1.0: USB Mass Storage 
device detected
Apr 20 22:26:39 notebook2 kernel: scsi host6: usb-storage 1-1.1:1.0
Apr 20 22:26:39 notebook2 mtp-probe[2333]: checking bus 1, device 5: 
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
Apr 20 22:26:39 notebook2 mtp-probe[2333]: bus: 1, device: 5 was not an MTP 
device
Apr 20 22:26:41 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init1.bin
Apr 20 22:26:41 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init2.bin
Apr 20 22:26:41 notebook2 kernel: scsi host6: scsi scan: INQUIRY result too 
short (5), using 36
Apr 20 22:26:41 notebook2 kernel: scsi 6:0:0:0: Direct-Access                   
                 PQ: 0 ANSI: 0
Apr 20 22:26:41 notebook2 kernel: sd 6:0:0:0: [sdb] 3985408 512-byte logical 
blocks: (2.04 GB/1.90 GiB)
Apr 20 22:26:41 notebook2 kernel: sd 6:0:0:0: Attached scsi generic sg2 type 0
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:26:41 notebook2 kernel: sd 6:0:0:0: [sdb] Write Protect is off
Apr 20 22:26:41 notebook2 kernel: sd 6:0:0:0: [sdb] Mode Sense: 0b 00 00 08
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:26:41 notebook2 kernel: sd 6:0:0:0: [sdb] No Caching mode page found
Apr 20 22:26:41 notebook2 kernel: sd 6:0:0:0: [sdb] Assuming drive cache: write 
through
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:26:41 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_rdwr.bin
Apr 20 22:26:41 notebook2 kernel:  sdb: sdb1
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:26:41 notebook2 kernel: sd 6:0:0:0: [sdb] Attached SCSI disk
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 36 dest 36
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 36 dest 252
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 36 dest 252
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: src 36 dest 36
Apr 20 22:26:41 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:26:50 notebook2 kernel: usb 1-1.1: USB disconnect, device number 5



broken 1

Apr 20 22:27:16 notebook2 kernel: usb 1-1.1: new high-speed USB device number 6 
using ehci-pci
Apr 20 22:27:16 notebook2 kernel: usb 1-1.1: New USB device found, 
idVendor=0cf2, idProduct=6250
Apr 20 22:27:16 notebook2 kernel: usb 1-1.1: New USB device strings: Mfr=1, 
Product=2, SerialNumber=4
Apr 20 22:27:16 notebook2 kernel: usb 1-1.1: Product: UB6250
Apr 20 22:27:16 notebook2 kernel: usb 1-1.1: Manufacturer: ENE Flash
Apr 20 22:27:16 notebook2 kernel: usb 1-1.1: SerialNumber: 606569746801
Apr 20 22:27:16 notebook2 kernel: ums_eneub6250 1-1.1:1.0: USB Mass Storage 
device detected
Apr 20 22:27:16 notebook2 kernel: scsi host6: usb-storage 1-1.1:1.0
Apr 20 22:27:16 notebook2 mtp-probe[2372]: checking bus 1, device 6: 
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
Apr 20 22:27:16 notebook2 mtp-probe[2372]: bus: 1, device: 6 was not an MTP 
device
Apr 20 22:27:17 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init1.bin
Apr 20 22:27:18 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init2.bin
Apr 20 22:27:18 notebook2 kernel: scsi host6: scsi scan: INQUIRY result too 
short (21), using 36
Apr 20 22:27:18 notebook2 kernel: scsi 6:0:0:0: Sequential-Access            J  
   `         -   PQ: 0 ANSI: 0
Apr 20 22:27:18 notebook2 kernel: scsi 6:0:0:0: Attached scsi generic sg2 type 1
Apr 20 22:27:18 notebook2 kernel: st: Version 20160209, fixed bufsize 32768, 
s/g segs 256
Apr 20 22:27:18 notebook2 kernel: st 6:0:0:0: Attached scsi tape st0
Apr 20 22:27:18 notebook2 kernel: st 6:0:0:0: st0: try direct i/o: yes 
(alignment 512 B)
Apr 20 22:27:18 notebook2 kernel: osst :I: Tape driver with OnStream support 
version 0.99.4
                                  osst :I: $Id: osst.c,v 1.73 2005/01/01 
21:13:34 wriede Exp $
ok 4

Apr 20 22:27:54 notebook2 kernel: usb 1-1.1: new high-speed USB device number 7 
using ehci-pci
Apr 20 22:27:54 notebook2 kernel: usb 1-1.1: New USB device found, 
idVendor=0cf2, idProduct=6250
Apr 20 22:27:54 notebook2 kernel: usb 1-1.1: New USB device strings: Mfr=1, 
Product=2, SerialNumber=4
Apr 20 22:27:54 notebook2 kernel: usb 1-1.1: Product: UB6250
Apr 20 22:27:54 notebook2 kernel: usb 1-1.1: Manufacturer: ENE Flash
Apr 20 22:27:54 notebook2 kernel: usb 1-1.1: SerialNumber: 606569746801
Apr 20 22:27:54 notebook2 kernel: ums_eneub6250 1-1.1:1.0: USB Mass Storage 
device detected
Apr 20 22:27:54 notebook2 kernel: scsi host6: usb-storage 1-1.1:1.0
Apr 20 22:27:54 notebook2 mtp-probe[2411]: checking bus 1, device 7: 
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
Apr 20 22:27:54 notebook2 mtp-probe[2411]: bus: 1, device: 7 was not an MTP 
device
Apr 20 22:27:55 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init1.bin
Apr 20 22:27:56 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init2.bin
Apr 20 22:27:56 notebook2 kernel: scsi host6: scsi scan: INQUIRY result too 
short (5), using 36
Apr 20 22:27:56 notebook2 kernel: scsi 6:0:0:0: Direct-Access                   
                 PQ: 0 ANSI: 0
Apr 20 22:27:56 notebook2 kernel: sd 6:0:0:0: [sdb] 3985408 512-byte logical 
blocks: (2.04 GB/1.90 GiB)
Apr 20 22:27:56 notebook2 kernel: sd 6:0:0:0: Attached scsi generic sg2 type 0
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:27:56 notebook2 kernel: sd 6:0:0:0: [sdb] Write Protect is off
Apr 20 22:27:56 notebook2 kernel: sd 6:0:0:0: [sdb] Mode Sense: 0b 00 00 08
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:27:56 notebook2 kernel: sd 6:0:0:0: [sdb] No Caching mode page found
Apr 20 22:27:56 notebook2 kernel: sd 6:0:0:0: [sdb] Assuming drive cache: write 
through
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:27:56 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_rdwr.bin
Apr 20 22:27:56 notebook2 kernel:  sdb: sdb1
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 12 dest 192
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 12
Apr 20 22:27:56 notebook2 kernel: sd 6:0:0:0: [sdb] Attached SCSI disk
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 36 dest 36
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 36 dest 252
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 36 dest 252
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: src 36 dest 36
Apr 20 22:27:56 notebook2 kernel: set_xfer_buf: actual 36
Apr 20 22:28:11 notebook2 kernel: usb 1-1.1: USB disconnect, device number 7


broken 2

Apr 20 22:28:46 notebook2 kernel: usb 1-1.1: new high-speed USB device number 8 
using ehci-pci
Apr 20 22:28:46 notebook2 kernel: usb 1-1.1: New USB device found, 
idVendor=0cf2, idProduct=6250
Apr 20 22:28:46 notebook2 kernel: usb 1-1.1: New USB device strings: Mfr=1, 
Product=2, SerialNumber=4
Apr 20 22:28:46 notebook2 kernel: usb 1-1.1: Product: UB6250
Apr 20 22:28:46 notebook2 kernel: usb 1-1.1: Manufacturer: ENE Flash
Apr 20 22:28:46 notebook2 kernel: usb 1-1.1: SerialNumber: 606569746801
Apr 20 22:28:46 notebook2 kernel: ums_eneub6250 1-1.1:1.0: USB Mass Storage 
device detected
Apr 20 22:28:46 notebook2 kernel: scsi host6: usb-storage 1-1.1:1.0
Apr 20 22:28:46 notebook2 mtp-probe[2452]: checking bus 1, device 8: 
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
Apr 20 22:28:46 notebook2 mtp-probe[2452]: bus: 1, device: 8 was not an MTP 
device
Apr 20 22:28:47 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init1.bin
Apr 20 22:28:48 notebook2 kernel: usb 1-1.1: direct-loading 
ene-ub6250/sd_init2.bin
Apr 20 22:28:48 notebook2 kernel: scsi 6:0:0:0: No Device         W    L 1 @ 
F\.<  x ,  n   a 4  PQ: 7 ANSI: 1
Apr 20 22:28:48 notebook2 kernel: scsi 6:0:0:0: alua: disable for non-disk 
devices
Apr 20 22:28:48 notebook2 kernel: scsi 6:0:0:0: alua: Attach failed (-22)
Apr 20 22:28:48 notebook2 kernel: scsi 6:0:0:0: failed to add device handler: 
-22
Apr 20 22:28:48 notebook2 kernel: scsi 6:0:0:0: Attached scsi generic sg2 type 
31
Apr 20 22:28:59 notebook2 kernel: usb 1-1.1: USB disconnect, device number 8



Regards,
Andreas
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