What does the error code 82 mean?

[fengyd]

Hi,

I added some log.



The right information got from device:

00 00 03 12 5B 00 01 3A 46 55 4A 49 54 53 55 20

4D 42 41 33 30 37 33 4E 50 20 20 20 20 20 20 20

34 37 30 32 42 42 53 32 50 41 41 30 31 31 46 34

00 00 00 00 00 00 00 00 0F 00 00 40 0B 54 01 3C



The wrong information  got from device:

00 00 00 00 03 00 12 00 5B 00 00 00 01 00 3A 00

46 00 55 00 4A 00 49 00 54 00 53 00 55 00 20 00

4D 00 42 00 41 00 33 00 30 00 37 00 33 00 4E 00

50 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00



Compared to the right log, it seems one extra byte *00* is added after
every byte.

Do you have any idea what can cause the problem?


Thanks for your help.

Br.
Yafeng



On Mon, Mar 2, 2015 at 3:49 PM, fengyd <fengyd81 at gmail.com> wrote:

> Hi,
>
> I found the related code in the function sym_int_sir:
>     /*
>      *  The device wants us to tranfer more data than
>      *  expected or in the wrong direction.
>      *  The number of extra bytes is in scratcha.
>      *  It is a data overrun condition.
>      */
>     case *SIR_DATA_OVERRUN*:
>         if (cp) {
>             OUTONB (HF_PRT, HF_EXT_ERR);
>           *  cp->xerr_status |= XE_EXTRA_DATA;*
>             cp->extra_bytes += INL (nc_scratcha);
>         }
>         goto out;
>
> I'm not familiar with SCSI.
> What does DATA_OVERRUN actually mean?
> How can it be triggered?
> Could you give more details about it?
>
> Thanks for your help.
>
> Br.
> Yafeng
>
>
>
> On Sat, Feb 28, 2015 at 4:50 PM, fengyd <fengyd81 at gmail.com> wrote:
>
>> Hi,
>>
>> It seems the error code 82 & 3F is 0x12.
>> And the definition of the error code in the file cam.h:
>>         CAM_AUTOSENSE_FAIL = 0x10,/* Autosense: request sense cmd fail */
>>         CAM_NO_HBA,             /* No HBA Detected error */
>>         CAM_DATA_RUN_ERR,       /* Data Overrun error */
>>
>> So, it means data overrun error?
>>
>> Thanks.
>>
>> Br.
>> Yafeng
>>
>> On Sat, Feb 28, 2015 at 4:32 PM, fengyd <fengyd81 at gmail.com> wrote:
>>
>>> Hi,
>>>
>>> INQUIRY command is sent to the target, but error code 82 is returned.
>>> I added some log in the driver:
>>> SIR_COMPLETE_ERROR
>>> (pass0:sym0:0:0:0): sym_complete_error status = 18
>>> (pass0:sym0:0:0:0): status = 82
>>>
>>> Do you know what  does the error code 82 mean?
>>>
>>> Thanks in advance.
>>>
>>> Br.
>>> Yafeng
>>>
>>
>>
>