diff options
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 9e5cb9f748e..b45b8b34c0c 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -52,8 +52,12 @@ #define SECTOR_SIZE 512 typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *scsicmd); -static struct ata_device * -ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev); + +static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap, + const struct scsi_device *scsidev); +static struct ata_device * ata_scsi_find_dev(struct ata_port *ap, + const struct scsi_device *scsidev); + #define RW_RECOVERY_MPAGE 0x1 #define RW_RECOVERY_MPAGE_LEN 12 @@ -2308,6 +2312,23 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd) return 0; } +static struct ata_device * ata_find_dev(struct ata_port *ap, int id) +{ + if (likely(id < ATA_MAX_DEVICES)) + return &ap->device[id]; + return NULL; +} + +static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap, + const struct scsi_device *scsidev) +{ + /* skip commands not addressed to targets we simulate */ + if (unlikely(scsidev->channel || scsidev->lun)) + return NULL; + + return ata_find_dev(ap, scsidev->id); +} + /** * ata_scsi_find_dev - lookup ata_device from scsi_cmnd * @ap: ATA port to which the device is attached @@ -2324,23 +2345,12 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd) * RETURNS: * Associated ATA device, or %NULL if not found. */ - static struct ata_device * ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) { - struct ata_device *dev; - - /* skip commands not addressed to targets we simulate */ - if (likely(scsidev->id < ATA_MAX_DEVICES)) - dev = &ap->device[scsidev->id]; - else - return NULL; - - if (unlikely((scsidev->channel != 0) || - (scsidev->lun != 0))) - return NULL; + struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); - if (unlikely(!ata_dev_enabled(dev))) + if (unlikely(!dev || !ata_dev_enabled(dev))) return NULL; if (!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) { |