On Mon, Jul 01, 2024 at 07:57:53PM +0000, 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 honour the D_SENSE bit for CK_COND=1 commands that had no error. Kernel already honours the D_SENSE bit when creating the sense buffer for commands that had an error.
Nit: we also honor it when creating the sense buffer for successful NCQ commands (e.g. CDL policy 0xD).
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@vger.kernel.org # 4.19+ Reported-by: Niklas Cassel cassel@kernel.org Closes: https://lore.kernel.org/linux-ide/Zn1WUhmLglM4iais@ryzen.lan Signed-off-by: Igor Pylypiv ipylypiv@google.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 26b1263f5c7c..ace6b009e7ff 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);} -- 2.45.2.803.g4e1b14247a-goog
With or without nit fixed: Reviewed-by: Niklas Cassel cassel@kernel.org