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[SCSI] megaraid_sas: Add .change_queue_depth support

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Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
adam radford
2011-07-26 15:42:52 -07:00
committed by James Bottomley
parent db21b6f41b
commit 4bcde509a8
1 changed files with 16 additions and 0 deletions
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16
drivers/scsi/megaraid/megaraid_sas_base.c
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@@ -54,6 +54,7 @@
#include <scsi/scsi_cmnd.h> #include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h> #include <scsi/scsi_device.h>
#include <scsi/scsi_host.h> #include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include "megaraid_sas_fusion.h" #include "megaraid_sas_fusion.h"
#include "megaraid_sas.h" #include "megaraid_sas.h"
@@ -2057,6 +2058,20 @@ megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
} }
} }
static int megasas_change_queue_depth(struct scsi_device *sdev,
int queue_depth, int reason)
{
if (reason != SCSI_QDEPTH_DEFAULT)
return -EOPNOTSUPP;
if (queue_depth > sdev->host->can_queue)
queue_depth = sdev->host->can_queue;
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
queue_depth);
return queue_depth;
}
/* /*
* Scsi host template for megaraid_sas driver * Scsi host template for megaraid_sas driver
*/ */
@@ -2074,6 +2089,7 @@ static struct scsi_host_template megasas_template = {
.eh_timed_out = megasas_reset_timer, .eh_timed_out = megasas_reset_timer,
.bios_param = megasas_bios_param, .bios_param = megasas_bios_param,
.use_clustering = ENABLE_CLUSTERING, .use_clustering = ENABLE_CLUSTERING,
.change_queue_depth = megasas_change_queue_depth,
}; };
/** /**