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| author | adam radford <aradford@gmail.com> | 2011-07-27 02:42:52 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-07-27 15:44:47 +0400 |
| commit | 4bcde509a8fe664f2e688647d8427b6aedaa89b7 (patch) | |
| tree | f4c7b0a8fade19647bc1d9f3799678d861d88b90 /drivers/scsi/megaraid | |
| parent | db21b6f41bf5a9ce335ced4b5feaa0ad04327003 (diff) | |
| download | linux-4bcde509a8fe664f2e688647d8427b6aedaa89b7.tar.xz | |
[SCSI] megaraid_sas: Add .change_queue_depth support
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/megaraid')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 2d8cdce7b2f5..c71922040539 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -54,6 +54,7 @@ #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> #include "megaraid_sas_fusion.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 */ @@ -2074,6 +2089,7 @@ static struct scsi_host_template megasas_template = { .eh_timed_out = megasas_reset_timer, .bios_param = megasas_bios_param, .use_clustering = ENABLE_CLUSTERING, + .change_queue_depth = megasas_change_queue_depth, }; /** |