Re: [PATCH 1/1] libata: Fix ATA request sense

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On 12/19/16 21:19, Sergei Shtylyov wrote:
> Hello!
> 
> On 12/19/2016 4:17 AM, Damien Le Moal wrote:
> 
>> For an ATA device supporting the sense data reporting feature set,
>> a failed command will trigger the execution of ata_eh_request_sense if
>> the result task file of the failed command has the ATA_SENSE bit set
>> (sense data available bit). ata_eh_request_sense executes the
>> REQUEST SENSE DATA EXT command to retrieve the sense data of the failed
>> command. On success of REQUEST SENSE DATA EXT, the ATA_SENSE bit will
>> NOT be set (the command succeeded) but ata_eh_request_sense
>> nevertheless tests the availability of sense data by testing that bit
>> presence in the result tf of the REQUEST SENSE DATA EXT command.
>> This leads to a falsy assume that request sense data failed and to the
> 
>     False assumption?

"This leads to falsely assume that..."

My apologies for the typo.

> 
>> warning message:
>>
>> atax.xx: request sense failed stat 50 emask 0
>>
>> Upon success of REQUEST SENSE DATA EXT, set the ATA_SENSE bit in the
>> result task file command so that sense data can be returned by
>> ata_eh_request_sense.
>>
>> Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
> [...]
> 
> MBR, Sergei
> 
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-- 
Damien Le Moal, Ph.D.
Sr. Manager, System Software Research Group,
Western Digital Corporation
Damien.LeMoal@xxxxxxx
(+81) 0466-98-3593 (ext. 513593)
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