diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/hpsa.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 03697ba9425..745c62444d2 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -43,6 +43,7 @@ #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> #include <linux/cciss_ioctl.h> #include <linux/string.h> #include <linux/bitmap.h> @@ -134,6 +135,8 @@ static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, static void hpsa_scan_start(struct Scsi_Host *); static int hpsa_scan_finished(struct Scsi_Host *sh, unsigned long elapsed_time); +static int hpsa_change_queue_depth(struct scsi_device *sdev, + int qdepth, int reason); static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); static int hpsa_slave_alloc(struct scsi_device *sdev); @@ -182,6 +185,7 @@ static struct scsi_host_template hpsa_driver_template = { .queuecommand = hpsa_scsi_queue_command, .scan_start = hpsa_scan_start, .scan_finished = hpsa_scan_finished, + .change_queue_depth = hpsa_change_queue_depth, .this_id = -1, .sg_tablesize = MAXSGENTRIES, .use_clustering = ENABLE_CLUSTERING, @@ -2077,6 +2081,23 @@ static int hpsa_scan_finished(struct Scsi_Host *sh, return finished; } +static int hpsa_change_queue_depth(struct scsi_device *sdev, + int qdepth, int reason) +{ + struct ctlr_info *h = sdev_to_hba(sdev); + + if (reason != SCSI_QDEPTH_DEFAULT) + return -ENOTSUPP; + + if (qdepth < 1) + qdepth = 1; + else + if (qdepth > h->nr_cmds) + qdepth = h->nr_cmds; + scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); + return sdev->queue_depth; +} + static void hpsa_unregister_scsi(struct ctlr_info *h) { /* we are being forcibly unloaded, and may not refuse. */ |