[PATCH] libata: kill @cdb argument from xlat methods
xlat function will be updated to consider qc->scsicmd->cmd_len and many xlat functions deference qc->scsicmd already. It doesn't make sense to pass qc->scsicmd->cmnd as @cdb separately. Kill the argument. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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@ -51,7 +51,7 @@
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#define SECTOR_SIZE 512
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typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *cdb);
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typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc);
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static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap,
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const struct scsi_device *scsidev);
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@ -935,7 +935,6 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
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/**
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* ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
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* @qc: Storage for translated ATA taskfile
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* @cdb: SCSI command to translate
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*
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* Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY
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* (to start). Perhaps these commands should be preceded by
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@ -948,11 +947,11 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
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* RETURNS:
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* Zero on success, non-zero on error.
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*/
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static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc,
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const u8 *cdb)
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static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
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{
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struct scsi_cmnd *scmd = qc->scsicmd;
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struct ata_taskfile *tf = &qc->tf;
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const u8 *cdb = scmd->cmnd;
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tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
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tf->protocol = ATA_PROT_NODATA;
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@ -1005,7 +1004,6 @@ invalid_fld:
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/**
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* ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command
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* @qc: Storage for translated ATA taskfile
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* @cdb: SCSI command to translate (ignored)
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*
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* Sets up an ATA taskfile to issue FLUSH CACHE or
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* FLUSH CACHE EXT.
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@ -1016,7 +1014,7 @@ invalid_fld:
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* RETURNS:
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* Zero on success, non-zero on error.
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*/
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static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
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static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc)
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{
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struct ata_taskfile *tf = &qc->tf;
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@ -1124,7 +1122,6 @@ static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
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/**
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* ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one
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* @qc: Storage for translated ATA taskfile
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* @cdb: SCSI command to translate
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*
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* Converts SCSI VERIFY command to an ATA READ VERIFY command.
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*
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@ -1134,12 +1131,13 @@ static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
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* RETURNS:
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* Zero on success, non-zero on error.
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*/
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static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
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static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc)
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{
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struct scsi_cmnd *scmd = qc->scsicmd;
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struct ata_taskfile *tf = &qc->tf;
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struct ata_device *dev = qc->dev;
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u64 dev_sectors = qc->dev->n_sectors;
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const u8 *cdb = scmd->cmnd;
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u64 block;
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u32 n_block;
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@ -1242,7 +1240,6 @@ nothing_to_do:
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/**
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* ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one
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* @qc: Storage for translated ATA taskfile
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* @cdb: SCSI command to translate
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*
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* Converts any of six SCSI read/write commands into the
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* ATA counterpart, including starting sector (LBA),
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@ -1258,9 +1255,10 @@ nothing_to_do:
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* RETURNS:
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* Zero on success, non-zero on error.
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*/
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static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
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static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
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{
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struct scsi_cmnd *scmd = qc->scsicmd;
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const u8 *cdb = scmd->cmnd;
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unsigned int tf_flags = 0;
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u64 block;
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u32 n_block;
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@ -1451,7 +1449,6 @@ static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
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ata_xlat_func_t xlat_func)
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{
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struct ata_queued_cmd *qc;
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u8 *cdb = cmd->cmnd;
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int is_io = xlat_func == ata_scsi_rw_xlat;
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VPRINTK("ENTER\n");
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@ -1483,7 +1480,7 @@ static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
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qc->complete_fn = ata_scsi_qc_complete;
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if (xlat_func(qc, cdb))
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if (xlat_func(qc))
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goto early_finish;
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/* select device, send command to hardware */
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@ -2339,7 +2336,6 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
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/**
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* atapi_xlat - Initialize PACKET taskfile
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* @qc: command structure to be initialized
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* @cdb: SCSI CDB associated with this PACKET command
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*
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* LOCKING:
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* spin_lock_irqsave(host lock)
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@ -2347,7 +2343,7 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
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* RETURNS:
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* Zero on success, non-zero on failure.
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*/
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static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
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static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
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{
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struct scsi_cmnd *scmd = qc->scsicmd;
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struct ata_device *dev = qc->dev;
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@ -2359,7 +2355,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
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if (ata_check_atapi_dma(qc))
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using_pio = 1;
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memcpy(&qc->cdb, cdb, dev->cdb_len);
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memcpy(&qc->cdb, scmd->cmnd, dev->cdb_len);
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qc->complete_fn = atapi_qc_complete;
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@ -2511,18 +2507,18 @@ ata_scsi_map_proto(u8 byte1)
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/**
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* ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile
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* @qc: command structure to be initialized
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* @cdb: SCSI command to convert
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*
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* Handles either 12 or 16-byte versions of the CDB.
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*
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* RETURNS:
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* Zero on success, non-zero on failure.
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*/
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static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *cdb)
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static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
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{
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struct ata_taskfile *tf = &(qc->tf);
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struct scsi_cmnd *scmd = qc->scsicmd;
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struct ata_device *dev = qc->dev;
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const u8 *cdb = scmd->cmnd;
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if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN)
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goto invalid_fld;
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