| Message ID | 20230124190308.127318-11-niklas.cassel@wdc.com |
|---|---|
| State | New |
| Headers | show |
| Series | Add Command Duration Limits support | expand |
On 1/24/23 20:02, Niklas Cassel wrote: > There is no need to check if !cmd as this can only happen for > ATA internal commands which uses the ATA internal tag (32). > > Most users of ata_scsi_set_sense() are from _xlat functions that > translate a scsicmd to an ATA command. These obviously have a qc->scsicmd. > > ata_scsi_qc_complete() can also call ata_scsi_set_sense() via > ata_gen_passthru_sense() / ata_gen_ata_sense(), called via > ata_scsi_qc_complete(). This callback is only called for translated > commands, so it also has a qc->scsicmd. > > ata_eh_analyze_ncq_error(): the NCQ error log can only contain a 0-31 > value, so it will never be able to get the ATA internal tag (32). > > ata_eh_request_sense(): only called by ata_eh_analyze_tf(), which > is only called when iteratating the QCs using ata_qc_for_each_raw(), > which does not include the internal tag. > > Since there is no existing call site where cmd can be NULL, remove the > !cmd check from ata_scsi_set_sense() and ata_scsi_set_sense_information(). > > Suggested-by: Christoph Hellwig <hch@lst.de> > Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com> > --- > drivers/ata/libata-scsi.c | 6 ------ > 1 file changed, 6 deletions(-) > Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index e093c7a7deeb..26746609bf76 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -209,9 +209,6 @@ void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, { bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); - if (!cmd) - return; - scsi_build_sense(cmd, d_sense, sk, asc, ascq); } @@ -221,9 +218,6 @@ void ata_scsi_set_sense_information(struct ata_device *dev, { u64 information; - if (!cmd) - return; - information = ata_tf_read_block(tf, dev); if (information == U64_MAX) return;
There is no need to check if !cmd as this can only happen for ATA internal commands which uses the ATA internal tag (32). Most users of ata_scsi_set_sense() are from _xlat functions that translate a scsicmd to an ATA command. These obviously have a qc->scsicmd. ata_scsi_qc_complete() can also call ata_scsi_set_sense() via ata_gen_passthru_sense() / ata_gen_ata_sense(), called via ata_scsi_qc_complete(). This callback is only called for translated commands, so it also has a qc->scsicmd. ata_eh_analyze_ncq_error(): the NCQ error log can only contain a 0-31 value, so it will never be able to get the ATA internal tag (32). ata_eh_request_sense(): only called by ata_eh_analyze_tf(), which is only called when iteratating the QCs using ata_qc_for_each_raw(), which does not include the internal tag. Since there is no existing call site where cmd can be NULL, remove the !cmd check from ata_scsi_set_sense() and ata_scsi_set_sense_information(). Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com> --- drivers/ata/libata-scsi.c | 6 ------ 1 file changed, 6 deletions(-)