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[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>
This commit is contained in:
Kashyap, Desai 2010-11-13 04:39:11 +05:30 committed by James Bottomley
parent 90d2a67225
commit a93c6b45df
1 changed files with 26 additions and 11 deletions
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37
drivers/scsi/mpt2sas/mpt2sas_scsih.c
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@ -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), "