On Wednesday 27 June 2012 17:58:57 Boris Samorodov wrote:
> 27.06.2012 19:36, Hans Petter Selasky пишет:
> > Then you need to check using "usbdump -i usbusX -s 65536 -vvvv" what is
> > actually going on there.
> 
> I'm using the unpatched kernel (i.e. stock r237572). There is no
> /dev/ad*. I use "usbconfig -d 7.5 reset" and here is the log for
> the quoted command (attached).

Hi,

A quick analysis.


Read CAPACITY (0x0a 0x25 ....):

19:44:42.626128 usbus7.5 SUBM-BULK-EP=00000002,SPD=HIGH,NFR=1,SLEN=32,IVAL=0
 frame[0] WRITE 31 bytes
 0000  55 53 42 43 04 00 00 00  08 00 00 00 80 00 0A 25  |USBC...........%|
 0010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 --  |............... |

Returns 8-bytes:

19:44:42.626359 usbus7.5 DONE-BULK-
EP=00000081,SPD=HIGH,NFR=1,SLEN=8,IVAL=0,ERR=0
 frame[0] READ 8 bytes
 0000  00 EE 97 4F 00 00 02 00  -- -- -- -- -- -- -- --  |...O....        |


Then suddenly read CAPACITY:

19:44:42.630014 usbus7.5 SUBM-BULK-EP=00000002,SPD=HIGH,NFR=1,SLEN=32,IVAL=0
 frame[0] WRITE 31 bytes
 0000  55 53 42 43 0E 00 00 00  08 00 00 00 80 00 0A 25  |USBC...........%|
 0010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 --  |............... |

Returns zero-bytes. That is a memstick bug! Probably CAM layer could retry one 
more time in that case??

19:44:42.630231 usbus7.5 DONE-BULK-
EP=00000081,SPD=HIGH,NFR=1,SLEN=0,IVAL=0,ERR=STALLED
 frame[0] READ 0 bytes


--HPS
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