linux-kernel - Re: [PATCH v5 3/7] ata: libata-scsi: Honor the D_SENSE bit for CK

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Date: Tue, 2 Jul 2024 08:02:15 +0200
From: Hannes Reinecke <hare@...e.de>
To: Igor Pylypiv <ipylypiv@...gle.com>, Damien Le Moal <dlemoal@...nel.org>,
 Niklas Cassel <cassel@...nel.org>
Cc: Tejun Heo <tj@...nel.org>, linux-ide@...r.kernel.org,
 linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v5 3/7] ata: libata-scsi: Honor the D_SENSE bit for
 CK_COND=1 and no error

On 7/2/24 04:47, Igor Pylypiv wrote:
> SAT-5 revision 8 specification removed the text about the ANSI INCITS
> 431-2007 compliance which was requiring SCSI/ATA Translation (SAT) to
> return descriptor format sense data for the ATA PASS-THROUGH commands
> regardless of the setting of the D_SENSE bit.
> 
> Let's honor the D_SENSE bit for ATA PASS-THROUGH commands while
> generating the "ATA PASS-THROUGH INFORMATION AVAILABLE" sense data.
> 
> SAT-5 revision 7
> ================
> 
> 12.2.2.8 Fixed format sense data
> 
> Table 212 shows the fields returned in the fixed format sense data
> (see SPC-5) for ATA PASS-THROUGH commands. SATLs compliant with ANSI
> INCITS 431-2007, SCSI/ATA Translation (SAT) return descriptor format
> sense data for the ATA PASS-THROUGH commands regardless of the setting
> of the D_SENSE bit.
> 
> SAT-5 revision 8
> ================
> 
> 12.2.2.8 Fixed format sense data
> 
> Table 211 shows the fields returned in the fixed format sense data
> (see SPC-5) for ATA PASS-THROUGH commands.
> 
> Cc: stable@...r.kernel.org # 4.19+
> Reported-by: Niklas Cassel <cassel@...nel.org>
> Closes: https://lore.kernel.org/linux-ide/Zn1WUhmLglM4iais@ryzen.lan
> Reviewed-by: Niklas Cassel <cassel@...nel.org>
> Signed-off-by: Igor Pylypiv <ipylypiv@...gle.com>
> ---
>   drivers/ata/libata-scsi.c | 7 ++-----
>   1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
> index b59cbb5ce5a6..076fbeadce01 100644
> --- a/drivers/ata/libata-scsi.c
> +++ b/drivers/ata/libata-scsi.c
> @@ -941,11 +941,8 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
>   				   &sense_key, &asc, &ascq);
>   		ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq);
>   	} else {
> -		/*
> -		 * ATA PASS-THROUGH INFORMATION AVAILABLE
> -		 * Always in descriptor format sense.
> -		 */
> -		scsi_build_sense(cmd, 1, RECOVERED_ERROR, 0, 0x1D);
> +		/* ATA PASS-THROUGH INFORMATION AVAILABLE */
> +		ata_scsi_set_sense(qc->dev, cmd, RECOVERED_ERROR, 0, 0x1D);
>   	}
>   }
>   
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@...e.de                                +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich