diff options
Diffstat (limited to 'drivers/scsi/libata-scsi.c')
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 248baae9648..bb30fcdc929 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -37,9 +37,9 @@ #include <linux/blkdev.h> #include <linux/spinlock.h> #include <scsi/scsi.h> -#include "scsi.h" #include <scsi/scsi_host.h> #include <scsi/scsi_device.h> +#include <scsi/scsi_request.h> #include <linux/libata.h> #include <linux/hdreg.h> #include <asm/uaccess.h> @@ -131,7 +131,7 @@ int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, /** * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl - * @dev: Device to whom we are issuing command + * @scsidev: Device to which we are issuing command * @arg: User provided data for issuing command * * LOCKING: @@ -217,7 +217,7 @@ error: /** * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl - * @dev: Device to whom we are issuing command + * @scsidev: Device to which we are issuing command * @arg: User provided data for issuing command * * LOCKING: @@ -355,10 +355,10 @@ struct ata_queued_cmd *ata_scsi_qc_new(struct ata_port *ap, qc->scsidone = done; if (cmd->use_sg) { - qc->sg = (struct scatterlist *) cmd->request_buffer; + qc->__sg = (struct scatterlist *) cmd->request_buffer; qc->n_elem = cmd->use_sg; } else { - qc->sg = &qc->sgent; + qc->__sg = &qc->sgent; qc->n_elem = 1; } } else { @@ -416,6 +416,7 @@ void ata_dump_status(unsigned id, struct ata_taskfile *tf) /** * ata_to_sense_error - convert ATA error to SCSI error + * @id: ATA device number * @drv_stat: value contained in ATA status register * @drv_err: value contained in ATA error register * @sk: the sense key we'll fill out @@ -702,6 +703,16 @@ int ata_scsi_slave_config(struct scsi_device *sdev) */ blk_queue_max_sectors(sdev->request_queue, 2048); } + + /* + * SATA DMA transfers must be multiples of 4 byte, so + * we need to pad ATAPI transfers using an extra sg. + * Decrement max hw segments accordingly. + */ + if (dev->class == ATA_DEV_ATAPI) { + request_queue_t *q = sdev->request_queue; + blk_queue_max_hw_segments(q, q->max_hw_segments - 1); + } } return 0; /* scsi layer doesn't check return value, sigh */ @@ -2221,7 +2232,7 @@ ata_scsi_map_proto(u8 byte1) /** * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile * @qc: command structure to be initialized - * @cmd: SCSI command to convert + * @scsicmd: SCSI command to convert * * Handles either 12 or 16-byte versions of the CDB. * |