diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2011-09-20 15:10:33 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-10-02 12:30:30 -0500 |
| commit | f6e67035a9edd79b8b202c159d5bec560bb9c358 (patch) | |
| tree | ba884b5a2de7cb60bd1e6f67813b47fdb8ff509a /drivers/scsi/libsas/sas_scsi_host.c | |
| parent | 2fc62e2ac350b8f574e0a09170b350a8f2fa4a02 (diff) | |
[SCSI] libsas,libata: fix ->change_queue_{depth|type} for sata devices
Pass queue_depth change requests to libata, and prevent queue_type
changes for ATA devices.
Otherwise:
1/ we do not honor the libata specific restrictions on the queue depth
2/ libsas drivers that do not set sdev->tagged_supported are unable to
change the queue_depth of ata devices via sysfs
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/libsas/sas_scsi_host.c')
| -rw-r--r-- | drivers/scsi/libsas/sas_scsi_host.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index d625577ed15..8f3c4cc1bfe 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -808,8 +808,13 @@ void sas_slave_destroy(struct scsi_device *scsi_dev) int sas_change_queue_depth(struct scsi_device *scsi_dev, int new_depth, int reason) { + struct domain_device *dev = sdev_to_domain_dev(scsi_dev); int res = min(new_depth, SAS_MAX_QD); + if (dev_is_sata(dev)) + return __ata_change_queue_depth(dev->sata_dev.ap, scsi_dev, + new_depth, reason); + if (reason != SCSI_QDEPTH_DEFAULT) return -EOPNOTSUPP; @@ -817,7 +822,6 @@ int sas_change_queue_depth(struct scsi_device *scsi_dev, int new_depth, scsi_adjust_queue_depth(scsi_dev, scsi_get_tag_type(scsi_dev), res); else { - struct domain_device *dev = sdev_to_domain_dev(scsi_dev); sas_printk("device %llx LUN %x queue depth changed to 1\n", SAS_ADDR(dev->sas_addr), scsi_dev->lun); @@ -830,6 +834,11 @@ int sas_change_queue_depth(struct scsi_device *scsi_dev, int new_depth, int sas_change_queue_type(struct scsi_device *scsi_dev, int qt) { + struct domain_device *dev = sdev_to_domain_dev(scsi_dev); + + if (dev_is_sata(dev)) + return -EINVAL; + if (!scsi_dev->tagged_supported) return 0; |