diff options
Diffstat (limited to 'drivers/ata/libata-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 43 |
1 files changed, 31 insertions, 12 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 46d087f0860..2a5412e7e9c 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -37,6 +37,7 @@ #include <linux/kernel.h> #include <linux/blkdev.h> #include <linux/spinlock.h> +#include <linux/export.h> #include <scsi/scsi.h> #include <scsi/scsi_host.h> #include <scsi/scsi_cmnd.h> @@ -1215,25 +1216,19 @@ void ata_scsi_slave_destroy(struct scsi_device *sdev) } /** - * ata_scsi_change_queue_depth - SCSI callback for queue depth config + * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth + * @ap: ATA port to which the device change the queue depth * @sdev: SCSI device to configure queue depth for * @queue_depth: new queue depth * @reason: calling context * - * This is libata standard hostt->change_queue_depth callback. - * SCSI will call into this callback when user tries to set queue - * depth via sysfs. + * libsas and libata have different approaches for associating a sdev to + * its ata_port. * - * LOCKING: - * SCSI layer (we don't care) - * - * RETURNS: - * Newly configured queue depth. */ -int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, - int reason) +int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, + int queue_depth, int reason) { - struct ata_port *ap = ata_shost_to_port(sdev->host); struct ata_device *dev; unsigned long flags; @@ -1269,6 +1264,30 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, } /** + * ata_scsi_change_queue_depth - SCSI callback for queue depth config + * @sdev: SCSI device to configure queue depth for + * @queue_depth: new queue depth + * @reason: calling context + * + * This is libata standard hostt->change_queue_depth callback. + * SCSI will call into this callback when user tries to set queue + * depth via sysfs. + * + * LOCKING: + * SCSI layer (we don't care) + * + * RETURNS: + * Newly configured queue depth. + */ +int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, + int reason) +{ + struct ata_port *ap = ata_shost_to_port(sdev->host); + + return __ata_change_queue_depth(ap, sdev, queue_depth, reason); +} + +/** * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command * @qc: Storage for translated ATA taskfile * |