Re: [PATCH v2 1/6] ata: libata-scsi: Do not overwrite valid sense data when CK_COND=1

[Damien Le Moal <dlemoal@kernel.org>]

On 6/25/24 07:12, Igor Pylypiv wrote:
> Current ata_gen_passthru_sense() code performs two actions:
> 1. Generates sense data based on the ATA 'status' and ATA 'error' fields.
> 2. Populates "ATA Status Return sense data descriptor" / "Fixed format
>    sense data" with ATA taskfile fields.
> 
> The problem is that #1 generates sense data even when a valid sense data
> is already present (ATA_QCFLAG_SENSE_VALID is set). Factoring out #2 into
> a separate function allows us to generate sense data only when there is
> no valid sense data (ATA_QCFLAG_SENSE_VALID is not set).
> 
> As a bonus, we can now delete a FIXME comment in atapi_qc_complete()
> which states that we don't want to translate taskfile registers into
> sense descriptors for ATAPI.
> 
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Igor Pylypiv <ipylypiv@google.com>

Reviewed-by: Damien Le Moal <dlemoal@kernel.org>

-- 
Damien Le Moal
Western Digital Research