diff options
| author | Kashyap, Desai <kashyap.desai@lsi.com> | 2010-11-13 04:39:11 +0530 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-12-21 12:24:07 -0600 |
| commit | a93c6b45df57332b1703e0dc6f99a1bafc17f5e3 (patch) | |
| tree | 2170abc929537a0542f7454a22da57428818ceea /drivers/scsi/mpt2sas | |
| parent | 90d2a672250b9d6e5c700f2d2c07c19d6fad064a (diff) | |
[SCSI] mpt2sas: change queue depth with reason argument more appropriately
change_queue_depth callback API changed
The change_queue_depth callback changed where there is now an additional
parameter called reason, with SCSI_QDEPTH_DEFAULT, SCSI_QDEPTH_QFULL,
and SCSI_QDEPTH_RAMP_UP codes.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/mpt2sas')
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_scsih.c | 37 |
1 files changed, 26 insertions, 11 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index e4987dbbaa50..608e8ce6cc74 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -1102,28 +1102,24 @@ _scsih_build_scatter_gather(struct MPT2SAS_ADAPTER *ioc, } /** - * _scsih_change_queue_depth - setting device queue depth + * _scsih_adjust_queue_depth - setting device queue depth * @sdev: scsi device struct * @qdepth: requested queue depth - * @reason: calling context * - * Returns queue depth. + * + * Returns nothing */ -static int -_scsih_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) +static void +_scsih_adjust_queue_depth(struct scsi_device *sdev, int qdepth) { struct Scsi_Host *shost = sdev->host; int max_depth; - int tag_type; struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); struct MPT2SAS_DEVICE *sas_device_priv_data; struct MPT2SAS_TARGET *sas_target_priv_data; struct _sas_device *sas_device; unsigned long flags; - if (reason != SCSI_QDEPTH_DEFAULT) - return -EOPNOTSUPP; - max_depth = shost->can_queue; /* limit max device queue for SATA to 32 */ @@ -1149,8 +1145,27 @@ _scsih_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) max_depth = 1; if (qdepth > max_depth) qdepth = max_depth; - tag_type = (qdepth == 1) ? 0 : MSG_SIMPLE_TAG; - scsi_adjust_queue_depth(sdev, tag_type, qdepth); + scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); +} + +/** + * _scsih_change_queue_depth - setting device queue depth + * @sdev: scsi device struct + * @qdepth: requested queue depth + * @reason: SCSI_QDEPTH_DEFAULT/SCSI_QDEPTH_QFULL/SCSI_QDEPTH_RAMP_UP + * (see include/scsi/scsi_host.h for definition) + * + * Returns queue depth. + */ +static int +_scsih_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) +{ + if (reason == SCSI_QDEPTH_DEFAULT || reason == SCSI_QDEPTH_RAMP_UP) + _scsih_adjust_queue_depth(sdev, qdepth); + else if (reason == SCSI_QDEPTH_QFULL) + scsi_track_queue_full(sdev, qdepth); + else + return -EOPNOTSUPP; if (sdev->inquiry_len > 7) sdev_printk(KERN_INFO, sdev, "qdepth(%d), tagged(%d), " |